kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Did this issue occur in a previous version of Ubuntu, or is this a new
issue?

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.15 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".


Thanks in advance.


[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc7-utopic/


** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

-- 
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1324384

Title:
  Speaker volume mutes itself in random intervals after upgrade to 14.04

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I've upgraded from ubuntu 13.10 and sound stopped working properly. It
  works in general. But mutes itself for small period  of time in random
  intervals.

  I've looked at alsamixer and it shown what once in a while some of the
  parameters got to the lowest level and then returning to normal after
  some time. It is reproing on Speaker. But also Internal Mic Boost
  jumps from 100% to 0% and then back to 100%.

  I was not able to fine anything in logs. I've also tried to purge
  pulseaudio and alsa-base packages and re-installing them again.
  Nothing helps.

  But I was able to find workaround. Audio works  just fine with old
  kernels. I've tried with 3.5.0-15 and 3.5.0-27. It works with both
  kernels. I've also tried newest kernel from next ubuntu version.
  3.15.0-031500rc5 - audio is not working in new kernel.

  So seems like something was broken in kernel since ubuntu 13.10.

  BTW, when sound mutes  on speaker, headphones are still working. So
  looks like alsamixer reports volumes  correctly.

  $  uname -r
  3.13.0-27-generic
  $ lspci | grep Audio
  00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
  $ lspci -v | grep -A7 -i "audio"
  00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
          Subsystem: Lenovo ThinkPad T61/R61
          Flags: bus master, fast devsel, latency 0, IRQ 46
          Memory at f8220000 (64-bit, non-prefetchable) [size=16K]
          Capabilities: <access denied>
          Kernel driver in use: snd_hda_intel

  00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express
  Port 1 (rev 03) (prog-if 00 [Normal decode])

  $ dmesg | egrep -i '(alsa|sound|snd)'
  [  241.137236] snd_hda_intel 0000:00:1b.0: irq 46 for MSI/MSI-X
  [  241.627491] input: HDA Intel Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10
  [  241.627767] input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input9
  [  241.628046] input: HDA Intel Dock Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input8
  $ sudo lshw -c multimedia
    *-multimedia            
         description: Audio device
         product: 82801H (ICH8 Family) HD Audio Controller
         vendor: Intel Corporation
         physical id: 1b
         bus info: pci@0000:00:1b.0
         version: 03
         width: 64 bits
         clock: 33MHz
         capabilities: pm msi pciexpress bus_master cap_list
         configuration: driver=snd_hda_intel latency=0
         resources: irq:46 memory:f8220000-f8223fff

  $ amixer -c 0 scontents > normal.txt
  SEE Attachment.
  $ amixer -c 0 scontents > muted.txt
  SEE Attachment.
  $ amixer -c 0 scontents > normalagain.txt
  SEE Attachment.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-27-generic 3.13.0-27.50
  ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
  Uname: Linux 3.13.0-27-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ghisguth   2519 F.... pulseaudio
                        ghisguth   3906 F.... pulseaudio
                        ghisguth  15548 F.... alsamixer
  Date: Wed May 28 22:50:29 2014
  HibernationDevice: RESUME=UUID=78076f7a-8340-428e-894b-ce095d0d278e
  InstallationDate: Installed on 2010-04-19 (1501 days ago)
  InstallationMedia: Kubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100406.1)
  MachineType: LENOVO 76693JG
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-27-generic root=/dev/mapper/ubuntu-root ro quiet splash crashkernel=384M-:128M
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-27-generic N/A
   linux-backports-modules-3.13.0-27-generic  N/A
   linux-firmware                             1.127.2
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: Upgraded to trusty on 2014-04-25 (33 days ago)
  dmi.bios.date: 10/22/2007
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 7NET29WW (1.10 )
  dmi.board.name: 76693JG
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr7NET29WW(1.10):bd10/22/2007:svnLENOVO:pn76693JG:pvrThinkPadX61s:rvnLENOVO:rn76693JG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 76693JG
  dmi.product.version: ThinkPad X61s
  dmi.sys.vendor: LENOVO

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