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No sound after upgrade to kernel 2.6.25 [solved]
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haimat
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PostPosted: Fri May 02, 2008 6:38 am    Post subject: No sound after upgrade to kernel 2.6.25 [solved] Reply with quote

Hi all,

I have updated my gentoo-sources from 2.6.22 to 2.6.25-r1. Now I have no alsa sound anymore. After booting into the new kernel the startup scripts went fine until the alsa lines are reached. There it said something like "can't restore last volume level", but that seemed to be only a warning.

So after login I started alsamixer, it looks quite fine (no mute channels Master or PCM). I tried to disable and enable some channels in alsamixer, but without luck, no sound at all under KDE. I also checked kmix.

Any ideas what I can do now?
It seems alsa has found my Intel-based onboard card fine:
Code:
itchy linux # lspci -v | grep -i audio
00:1b.0 Audio device: Intel Corporation HD Audio Controller (rev 02)

itchy linux # cat /proc/asound/oss/sndstat
Sound Driver:3.8.1a-980706 (ALSA v1.0.16rc2 emulation code)
Kernel: Linux itchy 2.6.25-gentoo-r1 #1 SMP PREEMPT Fri May 2 12:46:59 CEST 2008 x86_64
Config options: 0

Installed drivers:
Type 10: ALSA emulation

Card config:
HDA Intel at 0xfa200000 irq 22

Audio devices:
0: ALC882 Analog (DUPLEX)

Synth devices: NOT ENABLED IN CONFIG

Midi devices: NOT ENABLED IN CONFIG

Timers:
7: system timer

Mixers:
0: Realtek ALC885

And from dmesg:
Code:
ALSA device list:
  #0: HDA Intel at 0xfa200000 irq 22

Thanks in advance for your help!
Kind regards, Matthias

PS: I already tried rebooting, now I do not get this volume level warning anymore, but still no sound :(
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haimat
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PostPosted: Fri May 02, 2008 7:12 am    Post subject: Reply with quote

For the records -- I had to add the following line to /etc/modules.d/alsa:

Code:
options snd-hda-intel model=w2jc

Kind regards, Matthias
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slack---line
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Joined: 01 Apr 2005
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PostPosted: Fri May 02, 2008 7:12 am    Post subject: Reply with quote

Are you using alsa modules in the kernel or from portage (media-sound/alsa-driver)?

If the later, you may find that you need to re-emerge them for your new kernel.

slack
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slack---line
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Joined: 01 Apr 2005
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PostPosted: Fri May 02, 2008 8:12 am    Post subject: Reply with quote

Handy that you've changed the title, but what was the solution that solved this problem?

Was my guess correct? Useful to let others know what worked :wink:

slack
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haimat
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PostPosted: Fri May 02, 2008 12:15 pm    Post subject: Reply with quote

Hello slack,

I have already posted the solution.
Please read my second post in this thread.

Kind regards, Matthias
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slack---line
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PostPosted: Sat May 03, 2008 6:12 am    Post subject: Reply with quote

My bad :oops:
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