2 Advanced Linux Sound Architecture - Driver
3 ==========================================
10 To enable ALSA support you need at least to build the kernel with
11 primary sound card support (CONFIG_SOUND). Since ALSA can emulate OSS,
12 you don't have to choose any of the OSS modules.
14 Enable "OSS API emulation" (CONFIG_SND_OSSEMUL) and both OSS mixer and
15 PCM supports if you want to run OSS applications with ALSA.
17 If you want to support the WaveTable functionality on cards such as
18 SB Live! then you need to enable "Sequencer support"
19 (CONFIG_SND_SEQUENCER).
21 To make ALSA debug messages more verbose, enable the "Verbose printk"
22 and "Debug" options. To check for memory leaks, turn on "Debug memory"
23 too. "Debug detection" will add checks for the detection of cards.
25 Please note that all the ALSA ISA drivers support the Linux isapnp API
26 (if the card supports ISA PnP). You don't need to configure the cards
33 This depends on your distribution, but normally you use the /dev/MAKEDEV
34 script to create the necessary device nodes. On some systems you use a
35 script named 'snddevices'.
41 The user can load modules with options. If the module supports more than
42 one card and you have more than one card of the same type then you can
43 specify multiple values for the option separated by commas.
45 Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
50 The core ALSA module. It is used by all ALSA card drivers.
51 It takes the following options which have global effects.
53 major - major number for sound driver
56 - limiting card index for auto-loading (1-8)
58 - For auto-loading more than one card, specify this
59 option together with snd-card-X aliases.
61 - permission mask for dynamic sound device filesystem
62 - This is available only when DEVFS is enabled
64 - E.g.: device_mode=0660
70 The PCM OSS emulation module.
71 This module takes options which change the mapping of devices.
73 dsp_map - PCM device number maps assigned to the 1st OSS device.
75 adsp_map - PCM device number maps assigned to the 2st OSS device.
78 - Don't block opening busy PCM devices. Default: 1
80 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of
81 the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped
82 to PCM #0 of the card #0.
83 For changing the second or later card, specify the option with
84 commas, such like "dsp_map=0,1".
86 nonblock_open option is used to change the behavior of the PCM
87 regarding opening the device. When this option is non-zero,
88 opening a busy OSS PCM device won't be blocked but return
89 immediately with EAGAIN (just like O_NONBLOCK flag).
94 This module takes options which change the mapping of devices.
95 similar to those of the snd-pcm-oss module.
97 midi_map - MIDI device number maps assigned to the 1st OSS device.
99 amidi_map - MIDI device number maps assigned to the 2st OSS device.
102 Common parameters for top sound card modules
103 --------------------------------------------
105 Each of top level sound card module takes the following options.
107 index - index (slot #) of sound card
108 - Values: 0 through 31 or negative
109 - If nonnegative, assign that index number
110 - if negative, interpret as a bitmask of permissible
111 indices; the first free permitted index is assigned
113 id - card ID (identifier or name)
114 - Can be up to 15 characters long
115 - Default: the card type
116 - A directory by this name is created under /proc/asound/
117 containing information about the card
118 - This ID can be used instead of the index number in
121 - Default: enabled, for PCI and ISA PnP cards
126 Module for AdLib FM cards.
128 port - port # for OPL chip
130 This module supports multiple cards. It does not support autoprobe, so
131 the port must be specified. For actual AdLib FM cards it will be 0x388.
132 Note that this card does not have PCM support and no mixer; only FM
135 Make sure you have "sbiload" from the alsa-tools package available and,
136 after loading the module, find out the assigned ALSA sequencer port
137 number through "sbiload -l". Example output:
139 Port Client name Port name
140 64:0 OPL2 FM synth OPL2 FM Port
142 Load the std.sb and drums.sb patches also supplied by sbiload:
144 sbiload -p 64:0 std.sb drums.sb
146 If you use this driver to drive an OPL3, you can use std.o3 and drums.o3
147 instead. To have the card produce sound, use aplaymidi from alsa-utils:
149 aplaymidi -p 64:0 foo.mid
154 Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.
156 port - port # for AD1816A chip (PnP setup)
157 mpu_port - port # for MPU-401 UART (PnP setup)
158 fm_port - port # for OPL3 (PnP setup)
159 irq - IRQ # for AD1816A chip (PnP setup)
160 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
161 dma1 - first DMA # for AD1816A chip (PnP setup)
162 dma2 - second DMA # for AD1816A chip (PnP setup)
163 clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)
165 This module supports multiple cards, autoprobe and PnP.
170 Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.
172 port - port # for AD1848 chip
173 irq - IRQ # for AD1848 chip
174 dma1 - DMA # for AD1848 chip (0,1,3)
176 This module supports multiple cards. It does not support autoprobe
177 thus main port must be specified!!! Other ports are optional.
179 The power-management is supported.
184 Module for Analog Devices AD1889 chips.
186 ac97_quirk - AC'97 workaround for strange hardware
187 See the description of intel8x0 module for details.
189 This module supports multiple cards.
194 Module for ALi M5451 PCI chip.
196 pcm_channels - Number of hardware channels assigned for PCM
197 spdif - Support SPDIF I/O
200 This module supports one chip and autoprobe.
202 The power-management is supported.
207 Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.
209 port - port # for ALS100 (SB16) chip (PnP setup)
210 irq - IRQ # for ALS100 (SB16) chip (PnP setup)
211 dma8 - 8-bit DMA # for ALS100 (SB16) chip (PnP setup)
212 dma16 - 16-bit DMA # for ALS100 (SB16) chip (PnP setup)
213 mpu_port - port # for MPU-401 UART (PnP setup)
214 mpu_irq - IRQ # for MPU-401 (PnP setup)
215 fm_port - port # for OPL3 FM (PnP setup)
217 This module supports multiple cards, autoprobe and PnP.
219 The power-management is supported.
224 Module for Avance Logic ALS300 and ALS300+
226 This module supports multiple cards.
228 The power-management is supported.
233 Module for sound cards based on Avance Logic ALS4000 PCI chip.
235 joystick_port - port # for legacy joystick support.
236 0 = disabled (default), 1 = auto-detect
238 This module supports multiple cards, autoprobe and PnP.
240 The power-management is supported.
245 Module for ATI IXP 150/200/250/400 AC97 controllers.
247 ac97_clock - AC'97 clock (default = 48000)
248 ac97_quirk - AC'97 workaround for strange hardware
249 See "AC97 Quirk Option" section below.
250 spdif_aclink - S/PDIF transfer over AC-link (default = 1)
252 This module supports one card and autoprobe.
254 ATI IXP has two different methods to control SPDIF output. One is
255 over AC-link and another is over the "direct" SPDIF output. The
256 implementation depends on the motherboard, and you'll need to
257 choose the correct one via spdif_aclink module option.
259 The power-management is supported.
261 Module snd-atiixp-modem
262 -----------------------
264 Module for ATI IXP 150/200/250 AC97 modem controllers.
266 This module supports one card and autoprobe.
268 Note: The default index value of this module is -2, i.e. the first
271 The power-management is supported.
273 Module snd-au8810, snd-au8820, snd-au8830
274 -----------------------------------------
276 Module for Aureal Vortex, Vortex2 and Advantage device.
278 pcifix - Control PCI workarounds
279 0 = Disable all workarounds
280 1 = Force the PCI latency of the Aureal card to 0xff
281 2 = Force the Extend PCI#2 Internal Master for Efficient
282 Handling of Dummy Requests on the VIA KT133 AGP Bridge
283 3 = Force both settings
284 255 = Autodetect what is required (default)
286 This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware
287 EQ, mpu401, gameport. A3D and wavetable support are still in development.
288 Development and reverse engineering work is being coordinated at
289 http://savannah.nongnu.org/projects/openvortex/
290 SPDIF output has a copy of the AC97 codec output, unless you use the
291 "spdif" pcm device, which allows raw data passthru.
292 The hardware EQ hardware and SPDIF is only present in the Vortex2 and
295 Note: Some ALSA mixer applications don't handle the SPDIF sample rate
296 control correctly. If you have problems regarding this, try
297 another ALSA compliant mixer (alsamixer works).
302 Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).
304 port - port # for AZT2320 chip (PnP setup)
305 wss_port - port # for WSS (PnP setup)
306 mpu_port - port # for MPU-401 UART (PnP setup)
307 fm_port - FM port # for AZT2320 chip (PnP setup)
308 irq - IRQ # for AZT2320 (WSS) chip (PnP setup)
309 mpu_irq - IRQ # for MPU-401 UART (PnP setup)
310 dma1 - 1st DMA # for AZT2320 (WSS) chip (PnP setup)
311 dma2 - 2nd DMA # for AZT2320 (WSS) chip (PnP setup)
313 This module supports multiple cards, PnP and autoprobe.
315 The power-management is supported.
320 Module for sound cards based on Aztech AZF3328 PCI chip.
322 joystick - Enable joystick (default off)
324 This module supports multiple cards.
329 Module for video cards based on Bt87x chips.
331 digital_rate - Override the default digital rate (Hz)
332 load_all - Load the driver even if the card model isn't known
334 This module supports multiple cards.
336 Note: The default index value of this module is -2, i.e. the first
342 Module for Creative Audigy LS and SB Live 24bit
344 This module supports multiple cards.
350 Module for sound cards based on C-Media CMI8330 ISA chips.
352 wssport - port # for CMI8330 chip (WSS)
353 wssirq - IRQ # for CMI8330 chip (WSS)
354 wssdma - first DMA # for CMI8330 chip (WSS)
355 sbport - port # for CMI8330 chip (SB16)
356 sbirq - IRQ # for CMI8330 chip (SB16)
357 sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
358 sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
360 This module supports multiple cards and autoprobe.
362 The power-management is supported.
367 Module for C-Media CMI8338 and 8738 PCI sound cards.
369 mpu_port - 0x300,0x310,0x320,0x330 = legacy port,
370 1 = integrated PCI port,
371 0 = disable (default)
372 fm_port - 0x388 (default), 0 = disable (default)
373 soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only)
375 joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
377 This module supports autoprobe and multiple cards.
379 The power-management is supported.
384 Module for sound cards based on CS4231 ISA chips.
386 port - port # for CS4231 chip
387 mpu_port - port # for MPU-401 UART (optional), -1 = disable
388 irq - IRQ # for CS4231 chip
389 mpu_irq - IRQ # for MPU-401 UART
390 dma1 - first DMA # for CS4231 chip
391 dma2 - second DMA # for CS4231 chip
393 This module supports multiple cards. This module does not support autoprobe
394 thus main port must be specified!!! Other ports are optional.
396 The power-management is supported.
401 Module for sound cards based on CS4232/CS4232A ISA chips.
403 port - port # for CS4232 chip (PnP setup - 0x534)
404 cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00)
405 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
406 fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable
407 irq - IRQ # for CS4232 chip (5,7,9,11,12,15)
408 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
409 dma1 - first DMA # for CS4232 chip (0,1,3)
410 dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
411 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
413 This module supports multiple cards. This module does not support autoprobe
414 thus main port must be specified!!! Other ports are optional.
416 The power-management is supported.
421 Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/
422 CS4238B/CS4239 ISA chips.
424 port - port # for CS4236 chip (PnP setup - 0x534)
425 cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)
426 mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable
427 fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable
428 irq - IRQ # for CS4236 chip (5,7,9,11,12,15)
429 mpu_irq - IRQ # for MPU-401 UART (9,11,12,15)
430 dma1 - first DMA # for CS4236 chip (0,1,3)
431 dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
432 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
434 This module supports multiple cards. This module does not support autoprobe
435 (if ISA PnP is not used) thus main port and control port must be
436 specified!!! Other ports are optional.
438 The power-management is supported.
443 Module for Cirrus Logic CS4281 soundchip.
445 dual_codec - Secondary codec ID (0 = disable, default)
447 This module supports multiple cards.
449 The power-management is supported.
454 Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/
455 CS4624/CS4630/CS4280 PCI chips.
457 external_amp - Force to enable external amplifier.
458 thinkpad - Force to enable Thinkpad's CLKRUN control.
459 mmap_valid - Support OSS mmap mode (default = 0).
461 This module supports multiple cards and autoprobe.
462 Usually external amp and CLKRUN controls are detected automatically
463 from PCI sub vendor/device ids. If they don't work, give the options
466 The power-management is supported.
468 Module snd-cs5535audio
469 ----------------------
471 Module for multifunction CS5535 companion PCI device
473 The power-management is supported.
478 Module for Echoaudio Darla20
480 This module supports multiple cards.
481 The driver requires the firmware loader support on kernel.
486 Module for Echoaudio Darla24
488 This module supports multiple cards.
489 The driver requires the firmware loader support on kernel.
494 Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP
497 port - Port # (PnP setup)
498 mpu_port - Port # for MPU-401 (PnP setup)
499 fm_port - Port # for FM OPL-3 (PnP setup)
500 irq - IRQ # (PnP setup)
501 mpu_irq - IRQ # for MPU-401 (PnP setup)
502 dma8 - DMA # (PnP setup)
504 This module supports multiple cards. This module is enabled only with
507 The power-management is supported.
512 Module for the dummy sound card. This "card" doesn't do any output
513 or input, but you may use this module for any application which
514 requires a sound card (like RealPlayer).
516 The power-management is supported.
521 Module for Echoaudio 3G cards (Gina3G/Layla3G)
523 This module supports multiple cards.
524 The driver requires the firmware loader support on kernel.
529 Module for EMU10K1/EMU10k2 based PCI sound cards.
530 * Sound Blaster Live!
531 * Sound Blaster PCI 512
532 * Emu APS (partially supported)
533 * Sound Blaster Audigy
535 extin - bitmap of available external inputs for FX8010 (see bellow)
536 extout - bitmap of available external outputs for FX8010 (see bellow)
537 seq_ports - allocated sequencer ports (4 by default)
538 max_synth_voices - limit of voices used for wavetable (64 by default)
539 max_buffer_size - specifies the maximum size of wavetable/pcm buffers
540 given in MB unit. Default value is 128.
541 enable_ir - enable IR
543 This module supports multiple cards and autoprobe.
545 Input & Output configurations [extin/extout]
546 * Creative Card wo/Digital out [0x0003/0x1f03]
547 * Creative Card w/Digital out [0x0003/0x1f0f]
548 * Creative Card w/Digital CD in [0x000f/0x1f0f]
549 * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]
550 * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]
551 * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]
552 * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
553 * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]
554 * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]
555 * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]
556 * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
557 * Creative Card all ins and outs [0x3fff/0x7fff]
559 The power-management is supported.
564 Module for Creative Emu10k1X (SB Live Dell OEM version)
566 This module supports multiple cards.
571 Module for Ensoniq AudioPCI ES1370 PCI sound cards.
572 * SoundBlaster PCI 64
573 * SoundBlaster PCI 128
575 joystick - Enable joystick (default off)
577 This module supports multiple cards and autoprobe.
579 The power-management is supported.
584 Module for Ensoniq AudioPCI ES1371 PCI sound cards.
585 * SoundBlaster PCI 64
586 * SoundBlaster PCI 128
587 * SoundBlaster Vibra PCI
589 joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
590 0 = disable (default), 1 = auto-detect
592 This module supports multiple cards and autoprobe.
594 The power-management is supported.
599 Module for sound cards based on ESS ES968 chip (PnP only).
601 port - port # for ES968 (SB8) chip (PnP setup)
602 irq - IRQ # for ES968 (SB8) chip (PnP setup)
603 dma1 - DMA # for ES968 (SB8) chip (PnP setup)
605 This module supports multiple cards, PnP and autoprobe.
607 The power-management is supported.
612 Module for ESS AudioDrive ES-1688 and ES-688 sound cards.
614 port - port # for ES-1688 chip (0x220,0x240,0x260)
615 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
616 irq - IRQ # for ES-1688 chip (5,7,9,10)
617 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
618 dma8 - DMA # for ES-1688 chip (0,1,3)
620 This module supports multiple cards and autoprobe (without MPU-401 port).
625 Module for ESS AudioDrive ES-18xx sound cards.
627 port - port # for ES-18xx chip (0x220,0x240,0x260)
628 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)
629 fm_port - port # for FM (optional, not used)
630 irq - IRQ # for ES-18xx chip (5,7,9,10)
631 dma1 - first DMA # for ES-18xx chip (0,1,3)
632 dma2 - first DMA # for ES-18xx chip (0,1,3)
633 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
635 This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
636 port if native ISA PnP routines are not used).
637 When dma2 is equal with dma1, the driver works as half-duplex.
639 The power-management is supported.
644 Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
646 This module supports multiple cards and autoprobe.
648 The power-management is supported.
653 Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.
655 total_bufsize - total buffer size in kB (1-4096kB)
656 pcm_substreams_p - playback channels (1-8, default=2)
657 pcm_substreams_c - capture channels (1-8, default=0)
658 clock - clock (0 = auto-detection)
659 use_pm - support the power-management (0 = off, 1 = on,
661 enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
662 joystick - enable joystick (default off)
664 This module supports multiple cards and autoprobe.
666 The power-management is supported.
671 Module for ForteMedia FM801 based PCI sound cards.
673 tea575x_tuner - Enable TEA575x tuner
674 - 1 = MediaForte 256-PCS
675 - 2 = MediaForte 256-PCPR
676 - 3 = MediaForte 64-PCR
677 - High 16-bits are video (radio) device number + 1
678 - example: 0x10002 (MediaForte 256-PCPR, device 1)
680 This module supports multiple cards and autoprobe.
682 The power-management is supported.
687 Module for Echoaudio Gina20
689 This module supports multiple cards.
690 The driver requires the firmware loader support on kernel.
695 Module for Echoaudio Gina24
697 This module supports multiple cards.
698 The driver requires the firmware loader support on kernel.
700 Module snd-gusclassic
701 ---------------------
703 Module for Gravis UltraSound Classic sound card.
705 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
706 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
707 dma1 - DMA # for GF1 chip (1,3,5,6,7)
708 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
709 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
710 voices - GF1 voices limit (14-32)
711 pcm_voices - reserved PCM voices
713 This module supports multiple cards and autoprobe.
715 Module snd-gusextreme
716 ---------------------
718 Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.
720 port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)
721 gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)
722 mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable
723 irq - IRQ # for ES-1688 chip (5,7,9,10)
724 gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15)
725 mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
726 dma8 - DMA # for ES-1688 chip (0,1,3)
727 dma1 - DMA # for GF1 chip (1,3,5,6,7)
728 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
729 voices - GF1 voices limit (14-32)
730 pcm_voices - reserved PCM voices
732 This module supports multiple cards and autoprobe (without MPU-401 port).
737 Module for Gravis UltraSound MAX sound card.
739 port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)
740 irq - IRQ # for GF1 chip (3,5,9,11,12,15)
741 dma1 - DMA # for GF1 chip (1,3,5,6,7)
742 dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable)
743 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
744 voices - GF1 voices limit (14-32)
745 pcm_voices - reserved PCM voices
747 This module supports multiple cards and autoprobe.
752 Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8),
753 ATI SB450, SB600, RS600,
757 model - force the model name
758 position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size)
759 single_cmd - Use single immediate commands to communicate with
760 codecs (for debugging only)
761 disable_msi - Disable Message Signaled Interrupt (MSI)
763 This module supports one card and autoprobe.
765 Each codec may have a model table for different configurations.
766 If your machine isn't listed there, the default (usually minimal)
767 configuration is set up. You can pass "model=<name>" option to
768 specify a certain model in such a case. There are different
769 models depending on the codec chip.
771 Model name Description
772 ---------- -----------
774 3stack 3-jack in back and a headphone out
775 3stack-digout 3-jack in back, a HP out and a SPDIF out
776 5stack 5-jack in back, 2-jack in front
777 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
778 6stack 6-jack in back, 2-jack in front
779 6stack-digout 6-jack with a SPDIF out
781 z71v 3-jack (HP shared SPDIF)
782 asus 3-jack (ASUS Mobo)
784 asus-dig ASUS with SPDIF out
785 asus-dig2 ASUS with SPDIF out (using GPIO2)
788 lg LG laptop (m1 express dual)
789 lg-lw LG LW20/LW25 laptop
791 clevo Clevo laptops (m520G, m665n)
792 test for testing/debugging purpose, almost all controls can be
793 adjusted. Appearing only when compiled with
795 auto auto-config reading BIOS (default)
799 hp-3013 HP machines (3013-variant)
800 fujitsu Fujitsu S7020
802 basic fixed pin assignment (old default model)
803 auto auto-config reading BIOS (default)
806 fujitsu Fujitsu Laptop
807 hp-bpc HP xw4400/6400/8400/9400 laptops
809 basic fixed pin assignment w/o SPDIF
810 auto auto-config reading BIOS (default)
813 3stack-dig 3-jack with SPDIF I/O
814 6stck-dig 6-jack digital with SPDIF I/O
816 auto auto-config reading BIOS (default)
819 3stack-dig 3-jack with SPDIF I/O
820 6stack-dig 6-jack digital with SPDIF I/O
821 3stack-6ch 3-jack 6-channel
822 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
823 6stack-dig-demo 6-jack digital for Intel demo board
824 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
825 auto auto-config reading BIOS (default)
829 3stack-dig 3-jack with SPDIF I/O
830 6stack-dig 6-jack with SPDIF I/O
831 3stack-660 3-jack (for ALC660)
832 uniwill-m31 Uniwill M31 laptop
833 auto auto-config reading BIOS (default)
836 minimal 3-jack in back
837 min_fp 3-jack in back, 2-jack in front
838 full 6-jack in back, 2-jack in front
839 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
840 allout 5-jack in back, 2-jack in front, SPDIF out
841 auto auto-config reading BIOS (default)
844 basic 3-jack (default)
846 thinkpad Lenovo Thinkpad T60/X60/Z60
849 6stack 6-jack, separate surrounds (default)
850 3stack 3-stack, shared surrounds
851 laptop 2-channel only (FSC V2060, Samsung M50)
852 laptop-eapd 2-channel with EAPD (Samsung R65, ASUS A6J)
856 6stack-dig ditto with SPDIF
858 3stack-dig ditto with SPDIF
859 laptop 3-jack with hp-jack automute
860 laptop-dig ditto with SPDIF
861 auto auto-config reading BIOS (default)
863 STAC9200/9205/9220/9221/9254
866 5stack D945 5stack + SPDIF
868 STAC9227/9228/9229/927x
871 5stack D965 5stack + SPDIF
874 vaio Setup for VAIO FE550G/SZ110
875 vaio-ar Setup for VAIO AR
877 If the default configuration doesn't work and one of the above
878 matches with your device, report it together with the PCI
879 subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel
880 ML (see the section "Links and Addresses").
882 Note 2: If you get click noises on output, try the module option
883 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
884 register value without FIFO size correction as the current
885 DMA pointer. position_fix=2 will make the driver to use
886 the position buffer instead of reading SD_LPIB register.
887 (Usually SD_LPLIB register is more accurate than the
890 NB: If you get many "azx_get_response timeout" messages at
891 loading, it's likely a problem of interrupts (e.g. ACPI irq
892 routing). Try to boot with options like "pci=noacpi". Also, you
893 can try "single_cmd=1" module option. This will switch the
894 communication method between HDA controller and codecs to the
895 single immediate commands instead of CORB/RIRB. Basically, the
896 single command mode is provided only for BIOS, and you won't get
897 unsolicited events, too. But, at least, this works independently
898 from the irq. Remember this is a last resort, and should be
899 avoided as much as possible...
901 The power-management is supported.
906 Module for RME Hammerfall DSP audio interface(s)
908 This module supports multiple cards.
910 Note: The firmware data can be automatically loaded via hotplug
911 when CONFIG_FW_LOADER is set. Otherwise, you need to load
912 the firmware via hdsploader utility included in alsa-tools
914 The firmware data is found in alsa-firmware package.
916 Note: snd-page-alloc module does the job which snd-hammerfall-mem
917 module did formerly. It will allocate the buffers in advance
918 when any HDSP cards are found. To make the buffer
919 allocation sure, load snd-page-alloc module in the early
920 stage of boot sequence. See "Early Buffer Allocation"
926 Module for RME HDSP MADI board.
928 precise_ptr - Enable precise pointer, or disable.
929 line_outs_monitor - Send playback streams to analog outs by default.
930 enable_monitor - Enable Analog Out on Channel 63/64 by default.
932 See hdspm.txt for details.
937 Module for Envy24 (ICE1712) based PCI sound cards.
938 * MidiMan M Audio Delta 1010
939 * MidiMan M Audio Delta 1010LT
940 * MidiMan M Audio Delta DiO 2496
941 * MidiMan M Audio Delta 66
942 * MidiMan M Audio Delta 44
943 * MidiMan M Audio Delta 410
944 * MidiMan M Audio Audiophile 2496
950 * Hoontech SoundTrack DSP 24
951 * Hoontech SoundTrack DSP 24 Value
952 * Hoontech SoundTrack DSP 24 Media 7.1
953 * Event Electronics, EZ8
955 * Lionstracs, Mediastaton
957 model - Use the given board model, one of the following:
958 delta1010, dio2496, delta66, delta44, audiophile, delta410,
959 delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
960 dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
961 phase88, mediastation
962 omni - Omni I/O support for MidiMan M-Audio Delta44/66
963 cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transciever)
964 in msec resolution, default value is 500 (0.5 sec)
966 This module supports multiple cards and autoprobe. Note: The consumer part
967 is not used with all Envy24 based cards (for example in the MidiMan Delta
970 Note: The supported board is detected by reading EEPROM or PCI
971 SSID (if EEPROM isn't available). You can override the
972 model by passing "model" module option in case that the
973 driver isn't configured properly or you want to try another
979 Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
980 * MidiMan M Audio Revolution 5.1
981 * MidiMan M Audio Revolution 7.1
983 * TerraTec Aureon 5.1 Sky
984 * TerraTec Aureon 7.1 Space
985 * TerraTec Aureon 7.1 Universe
988 * AudioTrak Prodigy 7.1
989 * AudioTrak Prodigy 7.1LT
990 * AudioTrak Prodigy 192
992 * Albatron K8X800 Pro II
999 model - Use the given board model, one of the following:
1000 revo51, revo71, amp2000, prodigy71, prodigy71lt,
1001 prodigy192, aureon51, aureon71, universe,
1002 k8x800, phase22, phase28, ms300, av710
1004 This module supports multiple cards and autoprobe.
1006 Note: The supported board is detected by reading EEPROM or PCI
1007 SSID (if EEPROM isn't available). You can override the
1008 model by passing "model" module option in case that the
1009 driver isn't configured properly or you want to try another
1015 Module for Echoaudio Indigo
1017 This module supports multiple cards.
1018 The driver requires the firmware loader support on kernel.
1023 Module for Echoaudio Indigo DJ
1025 This module supports multiple cards.
1026 The driver requires the firmware loader support on kernel.
1031 Module for Echoaudio Indigo IO
1033 This module supports multiple cards.
1034 The driver requires the firmware loader support on kernel.
1039 Module for AC'97 motherboards from Intel and compatibles.
1040 * Intel i810/810E, i815, i820, i830, i84x, MX440
1041 ICH5, ICH6, ICH7, ESB2
1042 * SiS 7012 (SiS 735)
1043 * NVidia NForce, NForce2, NForce3, MCP04, CK804
1045 * AMD AMD768, AMD8111
1048 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1049 ac97_quirk - AC'97 workaround for strange hardware
1050 See "AC97 Quirk Option" section below.
1051 buggy_irq - Enable workaround for buggy interrupts on some
1052 motherboards (default yes on nForce chips,
1054 buggy_semaphore - Enable workaround for hardwares with buggy
1055 semaphores (e.g. on some ASUS laptops)
1058 This module supports one chip and autoprobe.
1060 Note: the latest driver supports auto-detection of chip clock.
1061 if you still encounter too fast playback, specify the clock
1062 explicitly via the module option "ac97_clock=41194".
1064 Joystick/MIDI ports are not supported by this driver. If your
1065 motherboard has these devices, use the ns558 or snd-mpu401
1066 modules, respectively.
1068 The power-management is supported.
1070 Module snd-intel8x0m
1071 --------------------
1073 Module for Intel ICH (i8x0) chipset MC97 modems.
1074 * Intel i810/810E, i815, i820, i830, i84x, MX440
1076 * SiS 7013 (SiS 735)
1077 * NVidia NForce, NForce2, NForce2s, NForce3
1081 ac97_clock - AC'97 codec clock base (0 = auto-detect)
1083 This module supports one card and autoprobe.
1085 Note: The default index value of this module is -2, i.e. the first
1088 The power-management is supported.
1090 Module snd-interwave
1091 --------------------
1093 Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32
1094 and other sound cards based on AMD InterWave (tm) chip.
1096 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1097 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1098 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1099 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1100 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1101 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1102 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1103 effect - 1 = InterWave effects enable (default 0);
1106 This module supports multiple cards, autoprobe and ISA PnP.
1108 Module snd-interwave-stb
1109 ------------------------
1111 Module for UltraSound 32-Pro (sound card from STB used by Compaq)
1112 and other sound cards based on AMD InterWave (tm) chip with TEA6330T
1113 circuit for extended control of bass, treble and master volume.
1115 port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)
1116 port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)
1117 irq - IRQ # for InterWave chip (3,5,9,11,12,15)
1118 dma1 - DMA # for InterWave chip (0,1,3,5,6,7)
1119 dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)
1120 joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V)
1121 midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default)
1122 pcm_voices - reserved PCM voices for the synthesizer (default 2)
1123 effect - 1 = InterWave effects enable (default 0);
1126 This module supports multiple cards, autoprobe and ISA PnP.
1131 Module for Korg 1212 IO PCI card
1133 This module supports multiple cards.
1138 Module for Echoaudio Layla20
1140 This module supports multiple cards.
1141 The driver requires the firmware loader support on kernel.
1146 Module for Echoaudio Layla24
1148 This module supports multiple cards.
1149 The driver requires the firmware loader support on kernel.
1154 Module for Allegro/Maestro3 chips
1156 external_amp - enable external amp (enabled by default)
1157 amp_gpio - GPIO pin number for external amp (0-15) or
1158 -1 for default pin (8 for allegro, 1 for
1161 This module supports autoprobe and multiple chips.
1163 Note: the binding of amplifier is dependent on hardware.
1164 If there is no sound even though all channels are unmuted, try to
1165 specify other gpio connection via amp_gpio option.
1166 For example, a Panasonic notebook might need "amp_gpio=0x0d"
1169 The power-management is supported.
1174 Module for Echoaudio Mia
1176 This module supports multiple cards.
1177 The driver requires the firmware loader support on kernel.
1182 Module for Miro soundcards: miroSOUND PCM 1 pro,
1184 miroSOUND PCM 20 Radio.
1186 port - Port # (0x530,0x604,0xe80,0xf40)
1187 irq - IRQ # (5,7,9,10,11)
1188 dma1 - 1st dma # (0,1,3)
1189 dma2 - 2nd dma # (0,1)
1190 mpu_port - MPU-401 port # (0x300,0x310,0x320,0x330)
1191 mpu_irq - MPU-401 irq # (5,7,9,10)
1192 fm_port - FM Port # (0x388)
1193 wss - enable WSS mode
1194 ide - enable onboard ide support
1199 Module for Digigram miXart8 sound cards.
1201 This module supports multiple cards.
1202 Note: One miXart8 board will be represented as 4 alsa cards.
1203 See MIXART.txt for details.
1205 When the driver is compiled as a module and the hotplug firmware
1206 is supported, the firmware data is loaded via hotplug automatically.
1207 Install the necessary firmware files in alsa-firmware package.
1208 When no hotplug fw loader is available, you need to load the
1209 firmware via mixartloader utility in alsa-tools package.
1214 Module for Echoaudio Mona
1216 This module supports multiple cards.
1217 The driver requires the firmware loader support on kernel.
1222 Module for MPU-401 UART devices.
1224 port - port number or -1 (disable)
1225 irq - IRQ number or -1 (disable)
1226 pnp - PnP detection - 0 = disable, 1 = enable (default)
1228 This module supports multiple devices and PnP.
1233 Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel
1236 port - I/O port # for MTPAV (0x378,0x278, default=0x378)
1237 irq - IRQ # for MTPAV (7,5, default=7)
1238 hwports - number of supported hardware ports, default=8.
1240 Module supports only 1 card. This module has no enable option.
1245 Module for Ego Systems (ESI) Miditerminal 4140
1247 This module supports multiple devices.
1248 Requires parport (CONFIG_PARPORT).
1253 Module for NeoMagic NM256AV/ZX chips
1255 playback_bufsize - max playback frame size in kB (4-128kB)
1256 capture_bufsize - max capture frame size in kB (4-128kB)
1257 force_ac97 - 0 or 1 (disabled by default)
1258 buffer_top - specify buffer top address
1259 use_cache - 0 or 1 (disabled by default)
1260 vaio_hack - alias buffer_top=0x25a800
1261 reset_workaround - enable AC97 RESET workaround for some laptops
1262 reset_workaround2 - enable extended AC97 RESET workaround for some
1265 This module supports one chip and autoprobe.
1267 The power-management is supported.
1269 Note: on some notebooks the buffer address cannot be detected
1270 automatically, or causes hang-up during initialization.
1271 In such a case, specify the buffer top address explicity via
1274 Sony F250: buffer_top=0x25a800
1275 Sony F270: buffer_top=0x272800
1276 The driver supports only ac97 codec. It's possible to force
1277 to initialize/use ac97 although it's not detected. In such a
1278 case, use force_ac97=1 option - but *NO* guarantee whether it
1281 Note: The NM256 chip can be linked internally with non-AC97
1282 codecs. This driver supports only the AC97 codec, and won't work
1283 with machines with other (most likely CS423x or OPL3SAx) chips,
1284 even though the device is detected in lspci. In such a case, try
1285 other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP
1286 but some doesn't have ISA PnP. You'll need to specify isapnp=0
1287 and proper hardware parameters in the case without ISA PnP.
1289 Note: some laptops need a workaround for AC97 RESET. For the
1290 known hardware like Dell Latitude LS and Sony PCG-F305, this
1291 workaround is enabled automatically. For other laptops with a
1292 hard freeze, you can try reset_workaround=1 option.
1294 Note: Dell Latitude CSx laptops have another problem regarding
1295 AC97 RESET. On these laptops, reset_workaround2 option is
1296 turned on as default. This option is worth to try if the
1297 previous reset_workaround option doesn't help.
1299 Note: This driver is really crappy. It's a porting from the
1300 OSS driver, which is a result of black-magic reverse engineering.
1301 The detection of codec will fail if the driver is loaded *after*
1302 X-server as described above. You might be able to force to load
1303 the module, but it may result in hang-up. Hence, make sure that
1304 you load this module *before* X if you encounter this kind of
1310 Module for Yamaha OPL3-SA2/SA3 sound cards.
1312 port - control port # for OPL3-SA chip (0x370)
1313 sb_port - SB port # for OPL3-SA chip (0x220,0x240)
1314 wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)
1315 midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1316 fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable
1317 irq - IRQ # for OPL3-SA chip (5,7,9,10)
1318 dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3)
1319 dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
1320 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1322 This module supports multiple cards and ISA PnP. It does not support
1323 autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
1325 The power-management is supported.
1327 Module snd-opti92x-ad1848
1328 -------------------------
1330 Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.
1331 Module works with OAK Mozart cards as well.
1333 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1334 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1335 fm_port - port # for OPL3 device (0x388)
1336 irq - IRQ # for WSS chip (5,7,9,10,11)
1337 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1338 dma1 - first DMA # for WSS chip (0,1,3)
1340 This module supports only one card, autoprobe and PnP.
1342 Module snd-opti92x-cs4231
1343 -------------------------
1345 Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.
1347 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1348 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1349 fm_port - port # for OPL3 device (0x388)
1350 irq - IRQ # for WSS chip (5,7,9,10,11)
1351 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1352 dma1 - first DMA # for WSS chip (0,1,3)
1353 dma2 - second DMA # for WSS chip (0,1,3)
1355 This module supports only one card, autoprobe and PnP.
1360 Module for sound cards based on OPTi 82c93x chips.
1362 port - port # for WSS chip (0x530,0xe80,0xf40,0x604)
1363 mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330)
1364 fm_port - port # for OPL3 device (0x388)
1365 irq - IRQ # for WSS chip (5,7,9,10,11)
1366 mpu_irq - IRQ # for MPU-401 UART (5,7,9,10)
1367 dma1 - first DMA # for WSS chip (0,1,3)
1368 dma2 - second DMA # for WSS chip (0,1,3)
1370 This module supports only one card, autoprobe and PnP.
1375 Module for Digigram PCXHR boards
1377 This module supports multiple cards.
1379 Module snd-powermac (on ppc only)
1380 ---------------------------------
1382 Module for PowerMac, iMac and iBook on-board soundchips
1384 enable_beep - enable beep using PCM (enabled as default)
1386 Module supports autoprobe a chip.
1388 Note: the driver may have problems regarding endianess.
1390 The power-management is supported.
1392 Module snd-pxa2xx-ac97 (on arm only)
1393 ------------------------------------
1395 Module for AC97 driver for the Intel PXA2xx chip
1397 For ARM architecture only.
1399 The power-management is supported.
1404 Module for Conexant Riptide chip
1406 joystick_port - Joystick port # (default: 0x200)
1407 mpu_port - MPU401 port # (default: 0x330)
1408 opl3_port - OPL3 port # (default: 0x388)
1410 This module supports multiple cards.
1411 The driver requires the firmware loader support on kernel.
1412 You need to install the firmware file "riptide.hex" to the standard
1413 firmware path (e.g. /lib/firmware).
1418 Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
1419 Prodif96 and Prodif Gold) sound cards.
1421 This module supports multiple cards.
1426 Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
1428 This module supports multiple cards.
1433 Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.
1435 precise_ptr - Enable precise pointer (doesn't work reliably).
1438 This module supports multiple cards.
1440 Note: snd-page-alloc module does the job which snd-hammerfall-mem
1441 module did formerly. It will allocate the buffers in advance
1442 when any RME9652 cards are found. To make the buffer
1443 allocation sure, load snd-page-alloc module in the early
1444 stage of boot sequence. See "Early Buffer Allocation"
1447 Module snd-sa11xx-uda1341 (on arm only)
1448 ---------------------------------------
1450 Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.
1452 Module supports only one card.
1453 Module has no enable and index options.
1455 The power-management is supported.
1460 Module for 8-bit SoundBlaster cards: SoundBlaster 1.0,
1464 port - port # for SB DSP chip (0x220,0x240,0x260)
1465 irq - IRQ # for SB DSP chip (5,7,9,10)
1466 dma8 - DMA # for SB DSP chip (1,3)
1468 This module supports multiple cards and autoprobe.
1470 The power-management is supported.
1472 Module snd-sb16 and snd-sbawe
1473 -----------------------------
1475 Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),
1476 SoundBlaster AWE 32 (PnP),
1477 SoundBlaster AWE 64 PnP
1479 port - port # for SB DSP 4.x chip (0x220,0x240,0x260)
1480 mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable
1481 awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660)
1482 (snd-sbawe module only)
1483 irq - IRQ # for SB DSP 4.x chip (5,7,9,10)
1484 dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3)
1485 dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7)
1486 mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)
1487 csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
1488 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1490 This module supports multiple cards, autoprobe and ISA PnP.
1492 Note: To use Vibra16X cards in 16-bit half duplex mode, you must
1493 disable 16bit DMA with dma16 = -1 module parameter.
1494 Also, all Sound Blaster 16 type cards can operate in 16-bit
1495 half duplex mode through 8-bit DMA channel by disabling their
1498 The power-management is supported.
1503 Module for Aztech Sound Galaxy sound card.
1505 sbport - Port # for SB16 interface (0x220,0x240)
1506 wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604)
1507 irq - IRQ # (7,9,10,11)
1510 This module supports multiple cards.
1512 The power-management is supported.
1517 Module for ENSONIQ SoundScape PnP cards.
1519 port - Port # (PnP setup)
1520 irq - IRQ # (PnP setup)
1521 mpu_irq - MPU-401 IRQ # (PnP setup)
1522 dma - DMA # (PnP setup)
1524 This module supports multiple cards. ISA PnP must be enabled.
1525 You need sscape_ctl tool in alsa-tools package for loading
1528 Module snd-sun-amd7930 (on sparc only)
1529 --------------------------------------
1531 Module for AMD7930 sound chips found on Sparcs.
1533 This module supports multiple cards.
1535 Module snd-sun-cs4231 (on sparc only)
1536 -------------------------------------
1538 Module for CS4231 sound chips found on Sparcs.
1540 This module supports multiple cards.
1542 Module snd-sun-dbri (on sparc only)
1543 -----------------------------------
1545 Module for DBRI sound chips found on Sparcs.
1547 This module supports multiple cards.
1549 Module snd-wavefront
1550 --------------------
1552 Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.
1554 cs4232_pcm_port - Port # for CS4232 PCM interface.
1555 cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15).
1556 cs4232_mpu_port - Port # for CS4232 MPU-401 interface.
1557 cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15).
1558 use_cs4232_midi - Use CS4232 MPU-401 interface
1559 (inaccessibly located inside your computer)
1560 ics2115_port - Port # for ICS2115
1561 ics2115_irq - IRQ # for ICS2115
1562 fm_port - FM OPL-3 Port #
1563 dma1 - DMA1 # for CS4232 PCM interface.
1564 dma2 - DMA2 # for CS4232 PCM interface.
1565 isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
1567 This module supports multiple cards and ISA PnP.
1569 Module snd-sonicvibes
1570 ---------------------
1572 Module for S3 SonicVibes PCI sound cards.
1573 * PINE Schubert 32 PCI
1575 reverb - Reverb Enable - 1 = enable, 0 = disable (default)
1576 - SoundCard must have onboard SRAM for this.
1577 mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
1579 This module supports multiple cards and autoprobe.
1581 Module snd-serial-u16550
1582 ------------------------
1584 Module for UART16550A serial MIDI ports.
1586 port - port # for UART16550A chip
1587 irq - IRQ # for UART16550A chip, -1 = poll mode
1588 speed - speed in bauds (9600,19200,38400,57600,115200)
1590 base - base for divisor in bauds (57600,115200,230400,460800)
1592 outs - number of MIDI ports in a serial port (1-4)
1594 adaptor - Type of adaptor.
1595 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
1596 3 = MS-124W M/B, 4 = Generic
1598 This module supports multiple cards. This module does not support autoprobe
1599 thus the main port must be specified!!! Other options are optional.
1604 Module for Trident 4DWave DX/NX sound cards.
1605 * Best Union Miss Melody 4DWave PCI
1607 * Warpspeed ONSpeed 4DWave PCI
1610 * CHIC True Sound 4Dwave
1611 * Shark Predator4D-PCI
1612 * Jaton SonicWave 4D
1614 pcm_channels - max channels (voices) reserved for PCM
1615 wavetable_size - max wavetable size in kB (4-?kb)
1617 This module supports multiple cards and autoprobe.
1619 The power-management is supported.
1621 Module snd-usb-audio
1622 --------------------
1624 Module for USB audio and USB MIDI devices.
1626 vid - Vendor ID for the device (optional)
1627 pid - Product ID for the device (optional)
1628 device_setup - Device specific magic number (optional)
1629 - Influence depends on the device
1632 This module supports multiple devices, autoprobe and hotplugging.
1634 Module snd-usb-usx2y
1635 --------------------
1637 Module for Tascam USB US-122, US-224 and US-428 devices.
1639 This module supports multiple devices, autoprobe and hotplugging.
1641 Note: you need to load the firmware via usx2yloader utility included
1642 in alsa-tools and alsa-firmware packages.
1647 Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
1648 8233A, 8233C, 8235, 8237 (south) bridge.
1650 mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
1652 joystick - Enable joystick (default off) [VIA686A/686B only]
1653 ac97_clock - AC'97 codec clock base (default 48000Hz)
1654 dxs_support - support DXS channels,
1655 0 = auto (default), 1 = enable, 2 = disable,
1656 3 = 48k only, 4 = no VRA, 5 = enable any sample
1657 rate and different sample rates on different
1659 [VIA8233/C, 8235, 8237 only]
1660 ac97_quirk - AC'97 workaround for strange hardware
1661 See "AC97 Quirk Option" section below.
1663 This module supports one chip and autoprobe.
1665 Note: on some SMP motherboards like MSI 694D the interrupts might
1666 not be generated properly. In such a case, please try to
1667 set the SMP (or MPS) version on BIOS to 1.1 instead of
1668 default value 1.4. Then the interrupt number will be
1669 assigned under 15. You might also upgrade your BIOS.
1671 Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
1672 channels as the first PCM. On these channels, up to 4
1673 streams can be played at the same time, and the controller
1674 can perform sample rate conversion with separate rates for
1676 As default (dxs_support = 0), 48k fixed rate is chosen
1677 except for the known devices since the output is often
1678 noisy except for 48k on some mother boards due to the
1680 Please try once dxs_support=5 and if it works on other
1681 sample rates (e.g. 44.1kHz of mp3 playback), please let us
1682 know the PCI subsystem vendor/device id's (output of
1684 If dxs_support=5 does not work, try dxs_support=4; if it
1685 doesn't work too, try dxs_support=1. (dxs_support=1 is
1686 usually for old motherboards. The correct implemented
1687 board should work with 4 or 5.) If it still doesn't
1688 work and the default setting is ok, dxs_support=3 is the
1689 right choice. If the default setting doesn't work at all,
1690 try dxs_support=2 to disable the DXS channels.
1691 In any cases, please let us know the result and the
1692 subsystem vendor/device ids. See "Links and Addresses"
1695 Note: for the MPU401 on VIA823x, use snd-mpu401 driver
1696 additionally. The mpu_port option is for VIA686 chips only.
1698 The power-management is supported.
1700 Module snd-via82xx-modem
1701 ------------------------
1703 Module for VIA82xx AC97 modem
1705 ac97_clock - AC'97 codec clock base (default 48000Hz)
1707 This module supports one card and autoprobe.
1709 Note: The default index value of this module is -2, i.e. the first
1712 The power-management is supported.
1717 Module for virtual rawmidi devices.
1718 This module creates virtual rawmidi devices which communicate
1719 to the corresponding ALSA sequencer ports.
1721 midi_devs - MIDI devices # (1-4, default=4)
1723 This module supports multiple cards.
1728 Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.
1730 mic - Enable Microphone on V222 Mic (NYI)
1731 ibl - Capture IBL size. (default = 0, minimum size)
1733 This module supports multiple cards.
1735 When the driver is compiled as a module and the hotplug firmware
1736 is supported, the firmware data is loaded via hotplug automatically.
1737 Install the necessary firmware files in alsa-firmware package.
1738 When no hotplug fw loader is available, you need to load the
1739 firmware via vxloader utility in alsa-tools package. To invoke
1740 vxloader automatically, add the following to /etc/modprobe.conf
1742 install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
1744 (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to
1745 /etc/modules.conf, instead.)
1746 IBL size defines the interrupts period for PCM. The smaller size
1747 gives smaller latency but leads to more CPU consumption, too.
1748 The size is usually aligned to 126. As default (=0), the smallest
1749 size is chosen. The possible IBL values can be found in
1750 /proc/asound/cardX/vx-status proc file.
1752 The power-management is supported.
1757 Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.
1759 ibl - Capture IBL size. (default = 0, minimum size)
1761 This module supports multiple cards. The module is compiled only when
1762 PCMCIA is supported on kernel.
1764 With the older 2.6.x kernel, to activate the driver via the card
1765 manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the
1766 sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no
1767 longer require a config file.
1769 When the driver is compiled as a module and the hotplug firmware
1770 is supported, the firmware data is loaded via hotplug automatically.
1771 Install the necessary firmware files in alsa-firmware package.
1772 When no hotplug fw loader is available, you need to load the
1773 firmware via vxloader utility in alsa-tools package.
1775 About capture IBL, see the description of snd-vx222 module.
1777 Note: snd-vxp440 driver is merged to snd-vxpocket driver since
1780 The power-management is supported.
1785 Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).
1787 mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default,
1788 1 (auto-detect for YMF744/754 only)
1789 fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default
1790 1 (auto-detect for YMF744/754 only)
1791 joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default,
1793 rear_switch - enable shared rear/line-in switch (bool)
1795 This module supports autoprobe and multiple chips.
1797 The power-management is supported.
1799 Module snd-pdaudiocf
1800 --------------------
1802 Module for Sound Core PDAudioCF sound card.
1804 The power-management is supported.
1810 The ac97_quirk option is used to enable/override the workaround for
1811 specific devices on drivers for on-board AC'97 controllers like
1812 snd-intel8x0. Some hardware have swapped output pins between Master
1813 and Headphone, or Surround (thanks to confusion of AC'97
1814 specifications from version to version :-)
1816 The driver provides the auto-detection of known problematic devices,
1817 but some might be unknown or wrongly detected. In such a case, pass
1818 the proper value with this option.
1820 The following strings are accepted:
1821 - default Don't override the default setting
1822 - none Disable the quirk
1823 - hp_only Bind Master and Headphone controls as a single control
1824 - swap_hp Swap headphone and master controls
1825 - swap_surround Swap master and surround controls
1826 - ad_sharing For AD1985, turn on OMS bit and use headphone
1827 - alc_jack For ALC65x, turn on the jack sense mode
1828 - inv_eapd Inverted EAPD implementation
1829 - mute_led Bind EAPD bit for turning on/off mute LED
1831 For backward compatibility, the corresponding integer value -1, 0,
1832 ... are accepted, too.
1834 For example, if "Master" volume control has no effect on your device
1835 but only "Headphone" does, pass ac97_quirk=hp_only module option.
1838 Configuring Non-ISAPNP Cards
1839 ============================
1841 When the kernel is configured with ISA-PnP support, the modules
1842 supporting the isapnp cards will have module options "isapnp".
1843 If this option is set, *only* the ISA-PnP devices will be probed.
1844 For probing the non ISA-PnP cards, you have to pass "isapnp=0" option
1845 together with the proper i/o and irq configuration.
1847 When the kernel is configured without ISA-PnP support, isapnp option
1848 will be not built in.
1851 Module Autoloading Support
1852 ==========================
1854 The ALSA drivers can be loaded automatically on demand by defining
1855 module aliases. The string 'snd-card-%1' is requested for ALSA native
1856 devices where %i is sound card number from zero to seven.
1858 To auto-load an ALSA driver for OSS services, define the string
1859 'sound-slot-%i' where %i means the slot number for OSS, which
1860 corresponds to the card index of ALSA. Usually, define this
1861 as the same card module.
1863 An example configuration for a single emu10k1 card is like below:
1864 ----- /etc/modprobe.conf
1865 alias snd-card-0 snd-emu10k1
1866 alias sound-slot-0 snd-emu10k1
1867 ----- /etc/modprobe.conf
1869 The available number of auto-loaded sound cards depends on the module
1870 option "cards_limit" of snd module. As default it's set to 1.
1871 To enable the auto-loading of multiple cards, specify the number of
1872 sound cards in that option.
1874 When multiple cards are available, it'd better to specify the index
1875 number for each card via module option, too, so that the order of
1876 cards is kept consistent.
1878 An example configuration for two sound cards is like below:
1880 ----- /etc/modprobe.conf
1882 options snd cards_limit=2
1883 alias snd-card-0 snd-interwave
1884 alias snd-card-1 snd-ens1371
1885 options snd-interwave index=0
1886 options snd-ens1371 index=1
1888 alias sound-slot-0 snd-interwave
1889 alias sound-slot-1 snd-ens1371
1890 ----- /etc/moprobe.conf
1892 In this example, the interwave card is always loaded as the first card
1893 (index 0) and ens1371 as the second (index 1).
1896 ALSA PCM devices to OSS devices mapping
1897 =======================================
1899 /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4
1900 /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3
1901 /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12
1902 /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20
1903 /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19
1904 /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28
1905 /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36
1906 /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39
1907 /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44
1909 The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means
1910 sound card number and second means device number. The ALSA devices
1911 have either 'c' or 'p' suffix indicating the direction, capture and
1912 playback, respectively.
1914 Please note that the device mapping above may be varied via the module
1915 options of snd-pcm-oss module.
1921 The ALSA driver fully supports the devfs extension.
1922 You should add lines below to your devfsd.conf file:
1924 LOOKUP snd MODLOAD ACTION snd
1925 REGISTER ^sound/.* PERMISSIONS root.audio 660
1926 REGISTER ^snd/.* PERMISSIONS root.audio 660
1928 Warning: These lines assume that you have the audio group in your system.
1929 Otherwise replace audio word with another group name (root for
1933 Proc interfaces (/proc/asound)
1934 ==============================
1936 /proc/asound/card#/pcm#[cp]/oss
1937 -------------------------------
1938 String "erase" - erase all additional informations about OSS applications
1939 String "<app_name> <fragments> <fragment_size> [<options>]"
1941 <app_name> - name of application with (higher priority) or without path
1942 <fragments> - number of fragments or zero if auto
1943 <fragment_size> - size of fragment in bytes or zero if auto
1944 <options> - optional parameters
1945 - disable the application tries to open a pcm device for
1946 this channel but does not want to use it.
1947 (Cause a bug or mmap needs)
1948 It's good for Quake etc...
1949 - direct don't use plugins
1950 - block force block mode (rvplayer)
1951 - non-block force non-block mode
1952 - whole-frag write only whole fragments (optimization affecting
1954 - no-silence do not fill silence ahead to avoid clicks
1955 - buggy-ptr Returns the whitespace blocks in GETOPTR ioctl
1956 instead of filled blocks
1958 Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss
1959 echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss
1960 echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
1963 Early Buffer Allocation
1964 =======================
1966 Some drivers (e.g. hdsp) require the large contiguous buffers, and
1967 sometimes it's too late to find such spaces when the driver module is
1968 actually loaded due to memory fragmentation. You can pre-allocate the
1969 PCM buffers by loading snd-page-alloc module and write commands to its
1970 proc file in prior, for example, in the early boot stage like
1971 /etc/init.d/*.local scripts.
1973 Reading the proc file /proc/drivers/snd-page-alloc shows the current
1974 usage of page allocation. In writing, you can send the following
1975 commands to the snd-page-alloc driver:
1977 - add VENDOR DEVICE MASK SIZE BUFFERS
1979 VENDOR and DEVICE are PCI vendor and device IDs. They take
1980 integer numbers (0x prefix is needed for the hex).
1981 MASK is the PCI DMA mask. Pass 0 if not restricted.
1982 SIZE is the size of each buffer to allocate. You can pass
1983 k and m suffix for KB and MB. The max number is 16MB.
1984 BUFFERS is the number of buffers to allocate. It must be greater
1985 than 0. The max number is 4.
1989 This will erase the all pre-allocated buffers which are not in
1996 ALSA project homepage
1997 http://www.alsa-project.org
1999 ALSA Bug Tracking System
2000 https://bugtrack.alsa-project.org/bugs/
2003 mailto:alsa-devel@lists.sourceforge.net