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[Bug 1305480] Re: BUG: pcmC0D0p:0, pos = 16390, buffer size = 16384, period size = 1024

 

Bug #1551041 affects my hp xw8400 workstation when running 32-bit
*Xenial*. Raymond (superquad-vortex2) has helped me identify the
problem, and he found, that it is probably caused by what you describe
in the following link,

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/core/pcm_lib.c?id=00d90154404ae6218730068d25bf2faad3186631

that is *this bug*

ALSA: pcm: 'BUG:' message unnecessarily triggers kerneloops
BugLink: http://bugs.launchpad.net/bugs/1305480

The kerneloops-daemon scans dmesg for common crash signatures, among
which is 'BUG:'. The message emitted by the PCM library is really a
warning, so the most expedient thing to do seems to be to change the
string.

See also the Bug report #1551041,

snd_au8820 0000:01:04.0: BUG: , pos = 16386, buffer size = 16384, period
size = 1024

https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1551041

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https://bugs.launchpad.net/bugs/1305480

Title:
  BUG: pcmC0D0p:0, pos = 16390, buffer size = 16384, period size = 1024

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Trusty:
  Fix Released
Status in linux source package in Utopic:
  Fix Released

Bug description:
  This bug annoys me a lot. There are about 100 'System Problem
  Detected' windows at logon. After the logon it appears occasionally.

  ProblemType: KernelOops
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-23-generic 3.13.0-23.45
  ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8
  Uname: Linux 3.13.0-23-generic x86_64
  Annotation: Your system might become unstable now and might need to be restarted.
  ApportVersion: 2.14.1-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  dbaskakov   2975 F.... pulseaudio
   /dev/snd/pcmC0D0p:   dbaskakov   2975 F...m pulseaudio
  Date: Thu Apr 10 10:36:33 2014
  Failure: oops
  HibernationDevice: RESUME=UUID=243c6575-07ba-42cb-99bd-c8a5122fb1fa
  InstallationDate: Installed on 2014-04-04 (5 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: System manufacturer System Product Name
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-23-generic root=UUID=411ab871-da55-4951-a933-1a9ea5710267 ro quiet splash vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions: kerneloops-daemon 0.12+git20090217-3ubuntu8
  RfKill:
   
  SourcePackage: linux
  Title: BUG: pcmC0D0p:0, pos = 16390, buffer size = 16384, period size = 1024
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/30/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1401
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: F1A55-M LX
  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.:bvr1401:bd09/30/2012:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnF1A55-MLX:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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