I'm running Linux Mint Debian, just compiled and installed OSS4 last night. WOW what a difference compared to pulse. I've got playback working from most programs so far in stereo, but I cannot for the life of me get OSS to enable the sub output on my motherboard. The motherboard is 8-channel and I have it set to "multich" in ossxmix.
The output of 'ossinfo -v3' indicates "2-8" channels with preferred channels being "not indicated". I'm doing my best to understand this stuff and I just spent a few hours on google with not much reward. I feel like I need to remap something but I'm not 100% sure what it is.
Is it possible to enable just 2.1 rather than full surround? If not I can play with my sub setup, but I'd rather not have to run line level inputs if possible.
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ossinfo -v3
Version info: OSS 4.2 (b 2005/201111070705) (0x00040100) GPL
Platform: Linux/x86_64 3.0.0-1-amd64 #1 SMP Sat Aug 27 16:21:11 UTC 2011 (linux)
Number of audio devices: 8
Number of audio engines: 12
Number of MIDI devices: 0
Number of mixer devices: 1
Device objects
0: osscore0 OSS core services
1: oss_hdaudio0 ATI HD Audio interrupts=4637998 (4638177)
HD Audio controller ATI HD Audio
Vendor ID 0x10024383
Subvendor ID 0x1043836c
Codec 0: Unknown (0x11060397/0x1043836c)
2: oss_usb0 USB audio core services
MIDI devices (/dev/midi*)
Mixer devices
0: High Definition Audio 0x1106039 (Mixer 0 of device object 1)
Device file /dev/oss/oss_hdaudio0/mix0, Legacy device /dev/mixer0
Priority: 10
Caps:
Device handle: PCI836c1043-0000:00:14.2-mx01
Device priority: 10
Audio devices
HD Audio play pcm1 /dev/oss/oss_hdaudio0/pcm0 (device index 0)
Legacy device /dev/dsp0
Caps: DUPLEX TRIGGER MMAP
Modes: IN/OUT
Out engine 1: 0/HD Audio play pcm1
Busy (OUT) label 'VMIX'
Engine 2: 8/HD Audio play pcm1 (vmix)
Busy (OUT) by PID 4598 / mpegaudioparse5 label 'mpegaudioparse5'
Engine 3: 9/HD Audio play pcm1 (vmix)
Available for use
Engine 4: 10/HD Audio play pcm1 (vmix)
Available for use
Engine 5: 11/HD Audio play pcm1 (vmix)
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au01
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 8
Native sample rates (min - max): 44100 - 192000 (44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play pcm2 /dev/oss/oss_hdaudio0/pcm1 (device index 1)
Legacy device /dev/dsp1
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 1/HD Audio play pcm2
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au02
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play pcm3 /dev/oss/oss_hdaudio0/pcm2 (device index 2)
Legacy device /dev/dsp2
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 2/HD Audio play pcm3
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au03
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play pcm4 /dev/oss/oss_hdaudio0/pcm3 (device index 3)
Legacy device /dev/dsp3
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 3/HD Audio play pcm4
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au04
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play spdifout1 /dev/oss/oss_hdaudio0/spdout0 (device index 4)
Legacy device /dev/dsp4
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 4/HD Audio play spdifout1
Available for use
Input formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au05
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play spdifout2 /dev/oss/oss_hdaudio0/spdout1 (device index 5)
Legacy device /dev/dsp5
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 5/HD Audio play spdifout2
Available for use
Input formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au06
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio rec select1 /dev/oss/oss_hdaudio0/pcmin0 (device index 6)
Legacy device /dev/dsp6
Caps: DUPLEX TRIGGER MMAP
Modes: IN/OUT
In engine 1: 6/HD Audio rec select1
Busy (IN) label 'VMIX_IN'
Engine 2: 8/HD Audio play pcm1 (vmix)
Busy (OUT) by PID 4598 / mpegaudioparse5 label 'mpegaudioparse5'
Engine 3: 9/HD Audio play pcm1 (vmix)
Available for use
Engine 4: 10/HD Audio play pcm1 (vmix)
Available for use
Engine 5: 11/HD Audio play pcm1 (vmix)
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au07
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio rec jack6 /dev/oss/oss_hdaudio0/pcmin1 (device index 7)
Legacy device /dev/dsp7
Caps: TRIGGER MMAP
Modes: INPUT
In engine 1: 7/HD Audio rec jack6
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI836c1043-0000:00:14.2-au08
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
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
'ossinfo -a'
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Audio devices
HD Audio play pcm1 /dev/oss/oss_hdaudio0/pcm0 (device index 0)
HD Audio play pcm2 /dev/oss/oss_hdaudio0/pcm1 (device index 1)
HD Audio play pcm3 /dev/oss/oss_hdaudio0/pcm2 (device index 2)
HD Audio play pcm4 /dev/oss/oss_hdaudio0/pcm3 (device index 3)
HD Audio play spdifout1 /dev/oss/oss_hdaudio0/spdout0 (device index 4)
HD Audio play spdifout2 /dev/oss/oss_hdaudio0/spdout1 (device index 5)
HD Audio rec select1 /dev/oss/oss_hdaudio0/pcmin0 (device index 6)
HD Audio rec jack6 /dev/oss/oss_hdaudio0/pcmin1 (device index 7)
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
Also, 'ossmix'
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ossmix
Selected mixer 0/High Definition Audio 0x11060397
Known controls are:
jack.jack1c.mute ON|OFF (currently OFF)
jack.jack1c.pcm11 [<leftvol>:<rightvol>] (currently 62.9:62.9 dB)
jack.jack1c.pcm12 [<leftvol>:<rightvol>] (currently 46.4:46.4 dB)
jack.jack1c.pcm3 [<leftvol>:<rightvol>] (currently 46.4:46.4 dB)
jack.jack1c.pcm2 [<leftvol>:<rightvol>] (currently 46.4:46.4 dB)
jack.jack1c.jack6 [<leftvol>:<rightvol>] (currently 46.4:46.4 dB)
jack.jack1c.jack5 [<leftvol>:<rightvol>] (currently 46.4:46.4 dB)
jack.jack1c.pcm4 [<leftvol>:<rightvol>] (currently 46.4:46.4 dB)
jack.jack1d.mute ON|OFF (currently OFF)
jack.jack1e.mute ON|OFF (currently OFF)
record.select1.select1 <pcm3|pcm2|jack6|jack5|mix> (currently mix)
record.select1 [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
record.jack6 [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.pcm2 [<leftvol>:<rightvol>] (currently 50.9:50.9 dB)
misc.mute1 ON|OFF (currently OFF)
misc.pcm3 [<leftvol>:<rightvol>] (currently 50.9:50.9 dB)
misc.pcm4 [<leftvol>:<rightvol>] (currently 50.9:50.9 dB)
misc.mute2 ON|OFF (currently OFF)
misc.mute3 ON|OFF (currently OFF)
vmix0-enable ON|OFF (currently ON)
vmix0-rate <decimal value> (currently 48000) (Read-only)
vmix0-channels <Stereo|Multich> (currently Multich)
vmix0-src <Fast|High|OFF> (currently OFF)
vmix0-outvol <monovol> (currently 24.5 dB)
vmix0-invol <monovol> (currently 25.0 dB)
vmix0.pcm8 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB) ("mpegaudioparse1")
vmix0.pcm9 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
vmix0.pcm10 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
vmix0.pcm11 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
osstest is also giving me errors and I'm not entirely sure what they mean..
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osstest
Sound subsystem and version: OSS 4.2 (b 2005/201111070705) (0x00040100)
Platform: Linux/x86_64 3.0.0-1-amd64 #1 SMP Sat Aug 27 16:21:11 UTC 2011
*** Scanning sound adapter #-1 ***
/dev/oss/oss_hdaudio0/pcm0 (audio engine 0): HD Audio play pcm1
Note! Device is in use (by PID 0/VMIX) but will try anyway
- Performing audio playback test...
<left> OK <right> OK <stereo> OK <measured srate 47995.00 Hz (-0.01%)>
/dev/oss/oss_hdaudio0/pcm1 (audio engine 1): HD Audio play pcm2
- Performing audio playback test... /dev/oss/oss_hdaudio0/pcm1: Device or resource busy
Can't open the device
/dev/oss/oss_hdaudio0/pcm2 (audio engine 2): HD Audio play pcm3
- Performing audio playback test... /dev/oss/oss_hdaudio0/pcm2: Device or resource busy
Can't open the device
/dev/oss/oss_hdaudio0/pcm3 (audio engine 3): HD Audio play pcm4
- Performing audio playback test... /dev/oss/oss_hdaudio0/pcm3: Device or resource busy
Can't open the device
/dev/oss/oss_hdaudio0/spdout0 (audio engine 4): HD Audio play spdifout1
- Performing audio playback test...
<left> OK <right> OK <stereo> OK <measured srate 47982.00 Hz (-0.04%)>
/dev/oss/oss_hdaudio0/spdout1 (audio engine 5): HD Audio play spdifout2
- Performing audio playback test...
<left> OK <right> OK <stereo> OK <measured srate 47993.00 Hz (-0.01%)>
/dev/oss/oss_hdaudio0/pcmin0 (audio engine 6): HD Audio rec select1
- Skipping input only device
/dev/oss/oss_hdaudio0/pcmin1 (audio engine 7): HD Audio rec jack6
- Skipping input only device
*** Some errors were detected during the tests ***
EDIT:
Got sound out of the sub by doing 'vmixctl attach /dev/oss/oss_hdaudio0/pcm2'. I can get sound out of it now with 'osstest 2' but I can't seem to get any farther than that. I only get sound from the left and stereo tests which I'm guessing is because OSS doesn't realize it's a mono channel. I also tried 'vmixctl remap /dev/pcm0 2 1 4' but somehow I don't think I'm understanding the remapping correctly. Is there a way to attach /dev/dsp to more than one output?
I also tried 'sudo ln -sf /dev/oss/oss_hdaudio0/pcm2 /dev/dsp' and it'll play through the sub.. just not the other speakers.