Hi, I am having quite a bit of trouble getting any sound out of the optical interface of my C-Media CM8738. In order to use the OSS driver as the snd_cmi driver was not working, I had to compile the kernel without the default sound driver support. Once OSS was compiled and started up, I had some sound with XBMC, but as soon as I changed a single setting, it was gone. I would like to get 5.1 surround from the optical out for use with XBMC. Here is my system info:
cat/dev/sndstat
ossinfo -v9
ossmix
I have tried messing with .asoundrc to no avail. I have been on IRC and have had a couple people try to help me again without success. Thank you for any help you can give.
cat/dev/sndstat
Code:
OSS 4.2 (b 2005/201201081817)BSD (C) 4Front Technologies 1996-2011
Kernel: FreeBSD 9.0-RC3 #0: Sun Jan 8 01:25:58 PST 2012
root@Medialol:/usr/obj/usr/src/sys/MYKERNEL
Audio devices:
0: CMedia CM8768 (rev 68) (DUPLEX)
Engine 1 opened INOUT by VMIX/0 @ 48000/48000 Hz Fragment: 2048/768000 (2.6 msec)
Engine 2 opened OUT by xbmc.bin/1974 @ 44100/48000 Hz Fragment: 32768/192000 (170.6 msec)
1: CMedia CM8768 (playback only) (OUTPUT)
MIDI devices:
Mixers:
0: CMedia CMPCIossinfo -v9
Code:
Version info: OSS 4.2 (b 2005/201201081817) (0x00040100) BSD
Platform: FreeBSD/amd64 9.0-RC3 FreeBSD 9.0-RC3 #0: Sun Jan 8 01:25:58 PST 2012
root@Medialol:/usr/obj/usr/src/sys/MYKERNEL (Medialol)
Number of audio devices: 2
Number of audio engines: 6
Number of MIDI devices: 0
Number of mixer devices: 1
Device objects
0: oss_cmpci0 CMedia CM8738 interrupts=5503491 (6205651)
MIDI devices (/dev/midi*)
Mixer devices
0: CMedia CMPCI (Mixer 0 of device object 0)
Device file /dev/oss/oss_cmpci0/mix0, Legacy device /dev/mixer0
Priority: 1
Caps:
Device handle: OSS-PCI-mx01
Device priority: 1
Audio devices
CMedia CM8768 (rev 68) /dev/oss/oss_cmpci0/pcm0 (device index 0)
Legacy device /dev/dsp0
Caps: DUPLEX TRIGGER MMAP
Modes: IN/OUT
Engine 1: 0/CMedia CM8768 (rev 68)
Busy (IN/OUT) label 'VMIX'
Engine 2: 1/CMedia CM8768 (rev 68) (vmix)
Busy (OUT) by PID 1974 / xbmc.bin label 'xbmc.bin'
Engine 3: 2/CMedia CM8768 (rev 68) (vmix)
Available for use
Engine 4: 3/CMedia CM8768 (rev 68) (vmix)
Available for use
Engine 5: 4/CMedia CM8768 (rev 68) (vmix)
Available for use
Input formats (0x00000418):
AFMT_U8 - 8 bit unsigned
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
Output formats (0x00000418):
AFMT_U8 - 8 bit unsigned
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
Device handle: OSS-PCI-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): 5000 - 48000
HW Type: ANALOG_OUT ANALOG_IN DIGITAL_OUT DIGITAL_IN Minimum latency: Not indicated
CMedia CM8768 (playback only) /dev/oss/oss_cmpci0/pcm1 (device index 1)
Legacy device /dev/dsp1
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 5/CMedia CM8768 (playback only)
Available for use
Input formats (0x00000418):
AFMT_U8 - 8 bit unsigned
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
Output formats (0x00000418):
AFMT_U8 - 8 bit unsigned
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
Device handle: OSS-PCI-au02
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): 5000 - 48000
HW Type: ANALOG_OUT ANALOG_IN DIGITAL_OUT DIGITAL_IN Minimum latency: Not indicated
Nodes
/dev/dsp -> /dev/oss/oss_cmpci0/pcm0
/dev/dsp_in -> /dev/oss/oss_cmpci0/pcm0
/dev/dsp_out -> /dev/oss/oss_cmpci0/pcm0
/dev/dsp_ac3 -> /dev/oss/oss_cmpci0/pcm0
/dev/dsp_mmap -> /dev/oss/oss_cmpci0/pcm0
/dev/dsp_multich -> /dev/oss/oss_cmpci0/pcm0
/dev/dsp_spdifout -> /dev/oss/oss_cmpci0/pcm0
/dev/dsp_spdifin -> /dev/oss/oss_cmpci0/pcm0ossmix
Code:
Selected mixer 0/CMedia CMPCI
Known controls are:
vol [<leftvol>:<rightvol>] (currently 90:90)
synth [<leftvol>:<rightvol>] (currently 75:75)
synth.rec ON|OFF (currently OFF)
pcm [<leftvol>:<rightvol>] (currently 75:75)
speaker <monovol> (currently 75)
line [<leftvol>:<rightvol>] (currently 75:75)
line.rec ON|OFF (currently OFF)
mic <monovol> (currently 32)
mic.rec ON|OFF (currently ON)
cd [<leftvol>:<rightvol>] (currently 75:75)
cd.rec ON|OFF (currently OFF)
rec [<leftvol>:<rightvol>] (currently 75:75)
igain [<leftvol>:<rightvol>] (currently 75:75)
aux1 [<leftvol>:<rightvol>] (currently 64:64)
aux1.rec ON|OFF (currently OFF)
mutectl.linemute ON|OFF (currently ON)
mutectl.cdmute ON|OFF (currently ON)
mutectl.micmute ON|OFF (currently ON)
mutectl.line1mute ON|OFF (currently ON)
jackctl.rear2line ON|OFF (currently ON)
jackctl.cen2line ON|OFF (currently ON)
jackctl.bass2line ON|OFF (currently ON)
jackctl.cen2mic ON|OFF (currently ON)
mixext.spkmode <FRONT|SPREAD> (currently SPREAD)
mixext.dualdac ON|OFF (currently OFF)
mixext.micboost ON|OFF (currently OFF)
spdif.play ON|OFF (currently ON)
spdif.loop ON|OFF (currently ON)
spdif.record ON|OFF (currently OFF)
spdif.imon ON|OFF (currently ON)
spdif.polrev ON|OFF (currently ON)
spdif.copyprot ON|OFF (currently ON)
spdif.optical ON|OFF (currently ON)
vmix0-enable ON|OFF (currently ON)
vmix0-rate <decimal value> (currently 48000) (Read-only)
vmix0-channels <Stereo|Multich> (currently Multich)
vmix0-src <High|OFF> (currently Fast)
vmix0-outvol <monovol> (currently 24.7 dB)
vmix0-invol <monovol> (currently 25.0 dB)
vmix0.pcm1 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB) ("xbmc.bin")
vmix0.pcm2 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
vmix0.pcm3 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
vmix0.pcm4 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)I have tried messing with .asoundrc to no avail. I have been on IRC and have had a couple people try to help me again without success. Thank you for any help you can give.
