Soundcard loaded but not shown in mixer-app

[Hendrik Schrieber]

After booting the sound icon in notifications area looks like sound is muted. When opening mixer application it shows that it is not muted but it does not show any audio devices in "Hardware". Sound does not work.

Kernel seems to load modules and recognize audio device, but lspci shows "access denied" on "Capabilities":

xxxx@xxxxx:~$ lspci -v | less
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
        Subsystem: Hewlett-Packard Company Device 30c2
        Flags: bus master, slow devsel, latency 64, IRQ 16
        Memory at 84000000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: HDA Intel
        Kernel modules: snd-hda-intel

Alsa Information Script 0.4.59 shows:

/sbin/alsactl: save_state:1502: No soundcards found...

This does not happen on every boot! Sometimes it does work properly.

Issue came up after installing Lucid Lynx. It always worked on Karmic.

Please tell me if you need any more information on this issue.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: alsa-base 1.0.22.1+dfsg-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
AplayDevices: aplay: device_list:223: no soundcards found...
Architecture: i386
ArecordDevices: arecord: device_list:223: no soundcards found...
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/dsp', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/hwC0D1', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer', '/dev/sequencer2', '/dev/sequencer'] failed with exit code 1:
Date: Mon May 3 11:15:00 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
PackageArchitecture: all
ProcEnviron:
 LANG=de_DE.utf8
 SHELL=/bin/bash
SourcePackage: alsa-driver
dmi.bios.date: 07/16/2007
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68YTT Ver. F.07
dmi.board.name: 30C2
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 71.28
dmi.chassis.asset.tag: CNU8020KYZ
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68YTTVer.F.07:bd07/16/2007:svnHewlett-Packard:pnHPCompaq6715s(KE003ET#ABD):pvrF.07:rvnHewlett-Packard:rn30C2:rvrKBCVersion71.28:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Compaq 6715s (KE003ET#ABD)
dmi.product.version: F.07
dmi.sys.vendor: Hewlett-Packard