imported>ThorstenStaerk |
imported>ThorstenStaerk |
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| − | See
| + | Linux sound is one big mess. We have ALSA, OSS, PulseAudio, gstreamer, arts, phonon as subsystems. This article explains the concepts and helps people fixing their sound problems. |
| − | * [[Sound troubleshooting]]
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| | | | |
| − | http://www.linuxjournal.com/article/6735 | + | The "normal" Linux sound system is [http://en.wikipedia.org/wiki/Advanced_Linux_Sound_Architecture ALSA]. It emulates the older [http://en.wikipedia.org/wiki/Open_Sound_System OSS]. ALSA allows several applications to play sound at the same time, OSS does not. This is because OSS provides a single sound device file, /dev/dsp that applications lock when outputting to it. To raise confusion, ALSA emulates OSS by also providing /dev/dsp. |
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| − | Soundcard Intel 82801G on Ubuntu 8.10: recording problems
| + | The first step to find out if your sound is configured correctly is to output noise. Turn the volume low and try |
| − | * recording via external microphone very quiet
| + | speaker-test |
| − | * recording via internal microphone cannot be heard
| + | If you hear your voice, your microphone and drivers are okay. |
| | | | |
| − | alsamixer -c 0
| + | = See also = |
| − | | + | * [[Sound troubleshooting]] |
| − | tstaerk@dell-desktop:~/alsa$ modprobe -l | grep snd-hda
| + | * http://www.linuxjournal.com/article/6735 |
| − | /lib/modules/2.6.27-14-generic/kernel/sound/pci/hda/snd-hda-intel.ko
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| − | tstaerk@dell-desktop:~/alsa$ md5sum /lib/modules/2.6.27-14-generic/kernel/sound/pci/hda/snd-hda-intel.ko
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| − | bec085930fe6b6e7c448c5ba7d3e50fa /lib/modules/2.6.27-14-generic/kernel/sound/pci/hda/snd-hda-intel.ko
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| − | tstaerk@dell-desktop:~/alsa$ ll /lib/modules/2.6.27-14-generic/kernel/sound/pci/hda/snd-hda-intel.ko
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| − | bash: ll: command not found
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| − | tstaerk@dell-desktop:~/alsa$ ls -l /lib/modules/2.6.27-14-generic/kernel/sound/pci/hda/snd-hda-intel.ko
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| − | -rw-r--r-- 1 root root 511592 2009-07-25 01:48 /lib/modules/2.6.27-14-generic/kernel/sound/pci/hda/snd-hda-intel.ko
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| − |
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| − | modinfo snd-hda-intel
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| − | filename: /lib/modules/2.6.27-14-generic/kernel/sound/pci/hda/snd-hda-intel.ko
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| − | description: Intel HDA driver
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| − | license: GPL
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| − | srcversion: C4633ED01D74A5D02607392
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| − | alias: pci:v00006549d00001200sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd00000BD7sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd00000BD6sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd00000BD5sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd00000BD4sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd00000AC3sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd00000AC2sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd00000AC1sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd00000AC0sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd000007FDsv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd000007FCsv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd00000777sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd00000776sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd00000775sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd00000774sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd0000055Dsv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd0000055Csv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd0000044Bsv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd0000044Asv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd000003F0sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd000003E4sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd00000371sv*sd*bc*sc*i*
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| − | alias: pci:v000010DEd0000026Csv*sd*bc*sc*i*
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| − | alias: pci:v000010B9d00005461sv*sd*bc*sc*i*
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| − | alias: pci:v00001039d00007502sv*sd*bc*sc*i*
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| − | alias: pci:v00001106d00003288sv*sd*bc*sc*i*
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| − | alias: pci:v00001002d0000AA48sv*sd*bc*sc*i*
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| − | alias: pci:v00001002d0000AA40sv*sd*bc*sc*i*
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| − | alias: pci:v00001002d0000AA38sv*sd*bc*sc*i*
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| − | alias: pci:v00001002d0000AA30sv*sd*bc*sc*i*
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| − | alias: pci:v00001002d0000AA28sv*sd*bc*sc*i*
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| − | alias: pci:v00001002d0000AA20sv*sd*bc*sc*i*
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| − | alias: pci:v00001002d0000AA18sv*sd*bc*sc*i*
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| − | alias: pci:v00001002d0000AA10sv*sd*bc*sc*i*
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| − | alias: pci:v00001002d0000AA08sv*sd*bc*sc*i*
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| − | alias: pci:v00001002d0000AA00sv*sd*bc*sc*i*
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| − | alias: pci:v00001002d0000970Fsv*sd*bc*sc*i*
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| − | alias: pci:v00001002d0000960Fsv*sd*bc*sc*i*
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| − | alias: pci:v00001002d00007919sv*sd*bc*sc*i*
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| − | alias: pci:v00001002d0000793Bsv*sd*bc*sc*i*
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| − | alias: pci:v00001002d00004383sv*sd*bc*sc*i*
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| − | alias: pci:v00001002d0000437Bsv*sd*bc*sc*i*
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| − | alias: pci:v00008086d0000811Bsv*sd*bc*sc*i*
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| − | alias: pci:v00008086d00003B56sv*sd*bc*sc*i*
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| − | alias: pci:v00008086d00003A6Esv*sd*bc*sc*i*
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| − | alias: pci:v00008086d00003A3Esv*sd*bc*sc*i*
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| − | alias: pci:v00008086d0000293Fsv*sd*bc*sc*i*
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| − | alias: pci:v00008086d0000293Esv*sd*bc*sc*i*
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| − | alias: pci:v00008086d00002911sv*sd*bc*sc*i*
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| − | alias: pci:v00008086d0000284Bsv*sd*bc*sc*i*
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| − | alias: pci:v00008086d0000269Asv*sd*bc*sc*i*
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| − | alias: pci:v00008086d000027D8sv*sd*bc*sc*i*
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| − | alias: pci:v00008086d00002668sv*sd*bc*sc*i*
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| − | depends: snd-pcm,snd-page-alloc,snd
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| − | vermagic: 2.6.27-14-generic SMP mod_unload modversions 586
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| − | parm: power_save:Automatic power-saving timeout (in second, 0 = disable). (int)
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| − | parm: index:Index value for Intel HD audio interface. (array of int)
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| − | parm: id:ID string for Intel HD audio interface. (array of charp)
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| − | parm: enable:Enable Intel HD audio interface. (array of bool)
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| − | parm: model:Use the given board model. (array of charp)
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| − | parm: position_fix:Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF). (array of int)
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| − | parm: bdl_pos_adj:BDL position adjustment offset. (array of int)
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| − | parm: probe_mask:Bitmask to probe codecs (default = -1). (array of int)
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| − | parm: single_cmd:Use single command to communicate with codecs (for debugging only). (bool)
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| − | parm: enable_msi:Enable Message Signaled Interrupt (MSI) (int)
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| − | parm: power_save_controller:Reset controller in power save mode. (bool)
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