No sound in Karmic after update to 2.6.31-20

[Jordi Catalán]

After a standard update in kubuntu karmic to the last kernel version (2.6.31-20) I get no sound from any application.

Result from alsa-info.sh
http://www.alsa-project.org/db/?f=e23623e8b7c9684e1471a9021ca758b3aa1a6bdd

ProblemType: Bug
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: jordi 2267 F.... pulseaudio
                      jordi 2273 F.... kmix
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf9ff8000 irq 30'
   Mixer name : 'Realtek ALC1200'
   Components : 'HDA:10ec0888,104382fe,00100101'
   Controls : 40
   Simple ctrls : 22
Date: Sat Mar 6 19:05:50 2010
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: nvidia
Package: alsa-base 1.0.20+dfsg-1ubuntu5
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=es_ES:es:en_GB:en
 LANG=es_ES.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-20.57-generic
SourcePackage: alsa-driver
Uname: Linux 2.6.31-20-generic x86_64
XsessionErrors:
 (polkit-gnome-authentication-agent-1:2288): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (firefox:2309): GLib-WARNING **: g_set_prgname() called multiple times

[Jordi Catalán (jordicm)]

I have already tried linux-backports-modules-alsa-karmic-generic and the PPA from Ubuntu Audio Development Team with no luck.

[Daniel T Chen (crimsun)]

Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 31
  Mono: Playback 27 [87%] [-6.00dB] [off] <----------------------

[Jordi Catalán (jordicm)]

Ah, ok. I have been playing with alsamixer a lot and maybe I left that control muted.

But after unmute the master control I still have no sound.

[Daniel T Chen (crimsun)]

So unmute Surround and Center, too.

[Jordi Catalán (jordicm)]

No, I remember that Surround and Center have been always muted even when the sound was working.

Anyway. I have unmuted both and still no sound.

[Daniel T Chen (crimsun)]

Please use linux-alsa-driver-modules from ppa:ubuntu-audio-dev

[Daniel T Chen (crimsun)]

Also, make sure that you're using the correct default sink; see pactl stat

[Jordi Catalán (jordicm)]

This is the result. It's ok?

jordi@olimpo:~$ pactl stat
Actualmente en uso: 5 bloques conteniendo 195,0 KiB bytes en total.
Ubicados durante a lo largo del tiempo: 83419 bloques conteniendo 925,2 MiB bytes en total.
Tamaño del cache de muestra: 0 B
Nombre de usuario: jordi
Nombre del equipo: olimpo
Nombre del servidor: pulseaudio
Versión del servidor: 0.9.21-32-g8478
Especificación de muestra por defecto: s16le 2ch 44100Hz
Mapa de canal por defecto: front-left,front-right
Sumidero por defecto (default sink): alsa_output.pci-0000_00_1b.0.analog-stereo
Fuente por defecto: alsa_input.pci-0000_00_1b.0.analog-stereo
Cookie: db1524cd

[Jordi Catalán (jordicm)]

Maybe, this is a problem? (from dmesg log):

[ 30.341259] ALSA hda_intel.c:712: azx_get_response timeout, switching to polling mode: last cmd=0x100f0000
[ 31.351257] ALSA hda_intel.c:720: No response from codec, disabling MSI: last cmd=0x100f0000
[ 32.361263] ALSA hda_intel.c:1416: Codec #1 probe error; disabling it...

[Daniel T Chen (crimsun)]

And, just to check, reverting to -19 results in working sound, correct?

[Jordi Catalán (jordicm)]

No, I have rebooted with 2.6.31-19 and no sound.

But a few days ago I had sound (I suppose with -19) and I have not changed anything of the configuration since then.

I only have installed the alsa-backport modules and the PPA from Ubuntu Audio Development Team (with no luck).

[Daniel T Chen (crimsun)]

Please remove all linux-backports-modules-alsa* and linux-alsa-driver-modules*, and verify that -19 has audible sound whereas -20 is not.

Alternately, dowload and boot a live cd of the most current daily-live Lucid desktop and reproduce this symptom.

[Jordi Catalán (jordicm)]

I have desintalled linux-alsa-driver-modules for kernel -20 (no packet for kernel -19). Rebooted into -19 and no sound.

I have tried the Lucid daily build from Sunday 7. I listen sound without problem.

So now?

[Daniel T Chen (crimsun)]

Because sound works from a live cd, I'm closing this bug. Please reproduce the symptom using a newly created user.

[Jordi Catalán (jordicm)]

This is strange. The command beep makes sound. And with a new linux user there is the kde starting sound, but no any other sound.

Why there is sound with the beep command and some kde sounds but no while playing mp3 o watching .avi??