I'm using Gentoo with OSS 4, with an Intel HDA device. Playback works flawlessly, but recording is something I can't get working. My current physical setup is very simple: stereo output on the green jack, and stereo input on the pink jack.
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delan@mercury ~ $ ossinfo
Version info: OSS 4.2 (b 2004/201107201430) (0x00040100) OSS_HG
Hg revision: changeset: 935:2bf7db11c82d, tag: tip, date: Wed Jul 20 03:58:10 2011 +0300, summary: Change SOUND_MASK_VOLUME to SOUND_MASK_PCM after switching
Platform: Linux/x86_64 3.0.1-gentoo #1 SMP Mon Aug 15 19:30:58 WST 2011 (mercury)
Number of audio devices: 10
Number of audio engines: 14
Number of MIDI devices: 0
Number of mixer devices: 1
Device objects
0: osscore0 OSS core services
1: oss_hdaudio0 Intel HD Audio interrupts=1112 (1112)
HD Audio controller Intel HD Audio
Vendor ID 0x80863a3e
Subvendor ID 0x1458a102
Codec 2: ALC885 (0x10ec0885/0x1458a102)
MIDI devices (/dev/midi*)
Mixer devices
0: High Definition Audio ALC885 (Mixer 0 of device object 1)
Audio devices
HD Audio play front /dev/oss/oss_hdaudio0/pcm0 (device index 0)
HD Audio play rear /dev/oss/oss_hdaudio0/pcm1 (device index 1)
HD Audio play center/LFE /dev/oss/oss_hdaudio0/pcm2 (device index 2)
HD Audio play side /dev/oss/oss_hdaudio0/pcm3 (device index 3)
HD Audio play pcm4 /dev/oss/oss_hdaudio0/pcm4 (device index 4)
HD Audio play spdif-out /dev/oss/oss_hdaudio0/spdout0 (device index 5)
HD Audio rec mix /dev/oss/oss_hdaudio0/pcmin0 (device index 6)
HD Audio rec mix /dev/oss/oss_hdaudio0/pcmin1 (device index 7)
HD Audio rec mix /dev/oss/oss_hdaudio0/pcmin2 (device index 8)
HD Audio rec spdifin /dev/oss/oss_hdaudio0/spdin0 (device index 9)
Nodes
/dev/dsp -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_in -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_out -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_ac3 -> /dev/oss/oss_hdaudio0/spdout0
/dev/dsp_mmap -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_multich -> /dev/oss/oss_hdaudio0/pcm0
I have initially reset my mixer settings to the OSS defaults, which are:
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Selected mixer 0/High Definition Audio ALC885
Known controls are:
jack.green.mode <front|rear|center/LFE|side|pcm4|input> (currently front)
jack.green [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.green.mute ON|OFF (currently OFF)
jack.black.mode <front|rear|center/LFE|side|pcm4|input> (currently center/LFE)
jack.black [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.black.mute ON|OFF (currently OFF)
jack.orange.mode <front|rear|center/LFE|side|pcm4|input> (currently rear)
jack.orange [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.orange.mute ON|OFF (currently OFF)
jack.gray.mode <front|rear|center/LFE|side|pcm4|input> (currently pcm4)
jack.gray [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.gray.mute ON|OFF (currently OFF)
jack.pink.mode <front|rear|center/LFE|side|pcm4|input> (currently front)
jack.pink [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.pink.mute ON|OFF (currently OFF)
jack.fp-pink.mode <front|rear|center/LFE|side|pcm4|input> (currently front)
jack.fp-pink [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.fp-pink.mute ON|OFF (currently OFF)
jack.blue.mode <front|rear|center/LFE|side|pcm4|input> (currently input)
jack.blue [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.blue.mute ON|OFF (currently OFF)
jack.fp-green.mode <front|rear|center/LFE|side|pcm4|input> (currently front)
jack.fp-green [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.fp-green.mute ON|OFF (currently OFF)
record.mix.mute.mic1 ON|OFF (currently OFF)
record.mix.mute.fp-mic1 ON|OFF (currently OFF)
record.mix.mute.linein1 ON|OFF (currently OFF)
record.mix.mute.fp-headphone1 ON|OFF (currently OFF)
record.mix.mute.int-cd1 ON|OFF (currently OFF)
record.mix.mute.white1 ON|OFF (currently OFF)
record.mix.mute.green1 ON|OFF (currently OFF)
record.mix.mute.black1 ON|OFF (currently OFF)
record.mix.mute.orange1 ON|OFF (currently OFF)
record.mix.mute.gray1 ON|OFF (currently OFF)
record.mix.mute.input-mix1 ON|OFF (currently OFF)
record.mix1 [<leftvol>:<rightvol>] (currently 37.9:37.9 dB)
record.mix.mute.mic2 ON|OFF (currently OFF)
record.mix.mute.fp-mic2 ON|OFF (currently OFF)
record.mix.mute.linein2 ON|OFF (currently OFF)
record.mix.mute.fp-headphone2 ON|OFF (currently OFF)
record.mix.mute.int-cd2 ON|OFF (currently OFF)
record.mix.mute.white2 ON|OFF (currently OFF)
record.mix.mute.green2 ON|OFF (currently OFF)
record.mix.mute.black2 ON|OFF (currently OFF)
record.mix.mute.orange2 ON|OFF (currently OFF)
record.mix.mute.gray2 ON|OFF (currently OFF)
record.mix.mute.input-mix2 ON|OFF (currently OFF)
record.mix2 [<leftvol>:<rightvol>] (currently 37.9:37.9 dB)
record.mix.mute.mic3 ON|OFF (currently OFF)
record.mix.mute.fp-mic3 ON|OFF (currently OFF)
record.mix.mute.linein3 ON|OFF (currently OFF)
record.mix.mute.fp-headphone3 ON|OFF (currently OFF)
record.mix.mute.int-cd3 ON|OFF (currently OFF)
record.mix.mute.white3 ON|OFF (currently OFF)
record.mix.mute.green3 ON|OFF (currently OFF)
record.mix.mute.black3 ON|OFF (currently OFF)
record.mix.mute.orange3 ON|OFF (currently OFF)
record.mix.mute.gray3 ON|OFF (currently OFF)
record.mix.mute.input-mix3 ON|OFF (currently OFF)
record.mix3 [<leftvol>:<rightvol>] (currently 37.9:37.9 dB)
misc.mic [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.fp-mic [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.linein [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.fp-headphone [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.int-cd [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.white [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.green [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.black [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.orange [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.gray [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.input-mix <mic|fp-mic|linein|int-cd> (currently mic)
misc.front-mute ON|OFF (currently OFF)
misc.input-mix-mute1 ON|OFF (currently OFF)
misc.front1 [<leftvol>:<rightvol>] (currently 51.9:51.9 dB)
misc.front2 <front|input-mix> (currently front)
misc.rear-mute ON|OFF (currently OFF)
misc.input-mix-mute2 ON|OFF (currently OFF)
misc.rear1 [<leftvol>:<rightvol>] (currently 51.9:51.9 dB)
misc.rear2 <rear|input-mix> (currently rear)
misc.center/lfe-mute ON|OFF (currently OFF)
misc.input-mix-mute3 ON|OFF (currently OFF)
misc.center/lfe1 [<leftvol>:<rightvol>] (currently 51.9:51.9 dB)
misc.center/lfe2 <center/LFE|input-mix> (currently center/LFE)
misc.side-mute ON|OFF (currently OFF)
misc.input-mix-mute4 ON|OFF (currently OFF)
misc.side1 [<leftvol>:<rightvol>] (currently 51.9:51.9 dB)
misc.side2 <side|input-mix> (currently side)
misc.pcm4-mute ON|OFF (currently OFF)
misc.input-mix-mute5 ON|OFF (currently OFF)
misc.pcm41 [<leftvol>:<rightvol>] (currently 51.9:51.9 dB)
misc.pcm42 <pcm4|input-mix> (currently pcm4)
vmix0-enable ON|OFF (currently ON)
vmix0-rate <decimal value> (currently 48000) (Read-only)
vmix0-channels <Stereo|Multich> (currently Stereo)
vmix0-src <Fast|High|OFF> (currently Fast)
vmix0-outvol <monovol> (currently 25.0 dB)
vmix0-invol <monovol> (currently 25.0 dB)
vmix0.pcm10 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
vmix0.pcm11 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
vmix0.pcm12 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
vmix0.pcm13 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
I have noticed that, oddly, by default, jack.pink.mode = front. From what I can gather, it really should be input, so I have tried changing it to that.
Doing this has the interesting effect of any input to the pink jack being echoed back to the green jack, or in other words, I can hear what I am saying. I have also noticed that setting misc.input-mix-mute1 = OFF disables this echoing.
However, nothing I have tried makes the input show up in the vmix0-invu or even reach vmix0, nor can I record with Skype (the 2.0.0.72 version, statically linked for OSS) or ossrecord.
Could anyone please help me get audio recording working?