[SOLVED] Slackware-Current lost sound on latest kernel

stormtracknole · 07-29-2009, 01:26 PM

I came up with a problem when updating Current. After upgrading everything (including the latest kernel), I lost the ability to play sound on either KDE or on the terminal. I reran alsaconf, played with alsamixer, but to no avail. I'm a little stumped on where else to look. Here's my info:

uname -r:

Code:

2.6.29.6-smp

my audio card:

Code:

C-Media CM8738 which uses cmipci

The audio worked correctly with the 2.6.29.5 kernel. I should note that there is already an onboard audio card (which I did not select during alsaconf) and I'm trying to play the audio in the digital channel (IEC958out). It worked before and I've never had this issue before. Anybody have any suggestions? Thanks ahead of time!!

manwichmakesameal · 07-29-2009, 02:14 PM

Are you using the generic kernel or the huge one? If you are using the generic one, I would take a look at dmesg and make sure that that module is getting loaded. Something along the lines of

Code:

user@machine: dmesg | grep cmipci

or

Code:

user@machine: dmesg | grep C-Media

Also, if I remember correctly, I think there is a digital/analog switch in kmix. Have you tried to switch back and forth? I had a similar issue with my dad's machine and that's all it was.

ringwraith · 07-29-2009, 03:09 PM

You might check /etc/group and make sure your user is still listed for all the needed groups (audio, video, etc.)

metrofox · 07-29-2009, 03:23 PM

Same history with other D.E.? You said KDE...

stormtracknole · 07-29-2009, 04:19 PM

The module is being loaded. Here's the output of lsmod | grep cmipci:

Code:

snd_cmipci             32480  0
gameport                9960  1 snd_cmipci
snd_opl3_lib            9212  1 snd_cmipci
snd_mpu401_uart         6524  1 snd_cmipci
snd_pcm                68128  4 snd_pcm_oss,snd_cmipci,snd_hda_intel,snd_hda_codec
snd                    50820  15 snd_seq_oss,snd_seq,snd_pcm_oss,snd_mixer_oss,snd_hda_codec_realtek,snd_cmipci,snd_hda_intel,snd_hda_codec,snd_opl3_lib,snd_mpu401_uart,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq_device,snd_timer

dmesg | grep cmipci doesn't show anything. However, dmesg | grep C-Media

Code:

C-Media PCI 0000:01:05.0: PCI INT A -> Link[APC1] -> GSI 16 (level, low) -> IRQ 16
C-Media PCI 0000:01:05.0: setting latency timer to 64

The sound is not working on non of the window managers or on the console in runlevel 3. If I do play sound.wav, I don't get any errors.

I'm in the process of building my own custom kernel (from the latest available from kernel.org). Then, I'll apply the .config from the Slackware 12.2 to see if that makes any difference.

stormtracknole · 07-29-2009, 04:47 PM

I forgot to add, the sound does not work for either root or a regular user. The regular user is still included in the audio group. I'm also booting the box in runlevel 3.

stormtracknole · 07-30-2009, 08:44 PM

Well, after compiling the latest kernel (2.6.30.3) using the .config file from Slackware 12.2 kernel, I was able to get the sound working again. I'm not sure yet what the problem was. The correct module was being loaded, but it was somehow not sending the sound to the correct soundcard. When I have a little more time, I'll see if I notice any major difference between the two .config files.

stormtracknole · 08-09-2009, 12:41 AM

Thanks to rworkman, I was able to fix my problem. I will post the solution here in case someone else with the same sound card has this problem.

Add the following at the top of your /etc/modprobe.d/sound.conf

Code:

options snd-cmipci mpu_port=0x330 fm_port=0x388

The end result should look like this:

Code:

options snd-cmipci mpu_port=0x330 fm_port=0x388
alias snd-card-0 snd-cmipci
alias sound-slot-0 snd-cmipci