[Bug 582234] [NEW] Main sound mixer mutes automatically every few seconds

[Alistair Buxton]

Public bug reported:

Summary says it all. Every few seconds the main sound mixer and most of
the others mute on their own (with no user input.) This makes sound
unusable. Unmuting the mixers makes sound come back for about 1 second
then they mute again. The only way to fix the problem is to reboot.
Until the next time it happens.

This problem happens with all the following alsa modules versions:
2.6.31 (ie all ubuntu karmic kernels)
2.6.32 (ie all ubuntu lucid kernels so far)
Current linux-backports-modules-headers-lucid-generic

But it does not happen with 2.6.33 upstream kernels.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-backports-modules-alsa-lucid-generic 2.6.32.22.23
Regression: No
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion:
 Advanced Linux Sound Architecture Driver Version 1.0.22.1.
 Compiled on Apr 29 2010 for kernel 2.6.32-22-generic (SMP).
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: VT1708S Analog [VT1708S Analog]
   Subdevices: 1/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  al         1675 F.... pulseaudio
                      al         5179 F.... spotify.exe
 /dev/snd/pcmC0D0c:   al         1675 F...m pulseaudio
 /dev/snd/pcmC0D0p:   al         1675 F...m pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xf9ff4000 irq 16'
   Mixer name	: 'VIA VT1708S'
   Components	: 'HDA:11060397,1043836c,00100000'
   Controls      : 37
   Simple ctrls  : 21
Card1.Amixer.info:
 Card hw:1 'NVidia'/'HDA NVidia at 0xfbcfc000 irq 31'
   Mixer name	: 'Nvidia ID d'
   Components	: 'HDA:10de000d,10de0101,00100100'
   Controls      : 0
   Simple ctrls  : 0
Card1.Amixer.values:
 
Date: Tue May 18 13:58:13 2010
Frequency: Once every few days.
HibernationDevice: RESUME=UUID=bdef25ff-56b0-4e0a-abf9-2cf62176f3d4
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
MachineType: System manufacturer System Product Name
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=22e9f849-0bd5-4f9f-9021-f69e2b3433ae ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_GB.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34
RfKill:
 0: hci0: Bluetooth
 	Soft blocked: no
 	Hard blocked: no
SourcePackage: linux
dmi.bios.date: 11/25/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0704
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M4A79XTD EVO
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0X
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0704:bd11/25/2009:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A79XTDEVO:rvrRevX.0X:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug audio lucid needs-upstream-testing

-- 
Main sound mixer mutes automatically every few seconds
https://bugs.launchpad.net/bugs/582234
You received this bug notification because you are a member of Kernel
Bugs, which is subscribed to linux in ubuntu.