kernel-packages team mailing list archive

[Erik Ackermann <814426@xxxxxxxxxxxxxxxxxx>]

The issue is still present on a fresh install of Saucy, and also just
now tested with the daily livecd of Trusty with the same results. The
"nohz=off" workaround still works in both cases.

I will upload the apport information for the Trusty daily livecd
shortly.

I am uploading a direct line recording I  just made of "speaker-test -c2
-tsine -f80" which shows the problem. The best way I can describe it is
an intermittent "mincing" in the left channel only.

** Attachment added: "Left channel crackling audio sample, Delta 1010LT card + F11 BIOS"
   https://bugs.launchpad.net/linux/+bug/814426/+attachment/3905843/+files/mincing_audio.ogg

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https://bugs.launchpad.net/bugs/814426

Title:
  Crackling Sound on PCI card

Status in The Linux Kernel:
  Fix Released
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  On my CyberpowerPC Gamer Xtreme 1030 desktop running up-to-date Natty
  Narwhal 64bit on fresh install, there is a variable crackling
  overlaying the sound on my card when any sound is playing. It is
  invariable to the output, as looping the same clip does not cause
  crackling to loop. The output of sudo aplay -l is:

  card 0: M1010LT [M Audio Delta 1010LT], device 0: ICE1712 multi [ICE1712 multi]
    Subdevices: 1/1
    Subdevice #0: subdevice #0

  Any idea's on what this is? Occurs with pulseaudio on or off (even
  with speaker-test), and only on my Delta 1010LT sound card. Jaunty
  livecd plays audio without crackles, while Natty livecd produces
  crackles.

  WORKAROUND: nohz=off

  ---
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: M1010LT [M Audio Delta 1010LT], device 0: ICE1712 multi [ICE1712 multi]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: M1010LT [M Audio Delta 1010LT], device 0: ICE1712 multi [ICE1712 multi]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  erik       2464 F.... pulseaudio
   /dev/snd/seq:        erik       1737 F.... qjackctl
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'M1010LT'/'M Audio Delta 1010LT at 0xdf00, irq 18'
     Mixer name	: 'ICE1712 - multitrack'
     Components	: ''
     Controls      : 85
     Simple ctrls  : 57
  DistroRelease: Ubuntu 11.04
  HibernationDevice: RESUME=UUID=4362b0a7-9c03-48cc-a343-67976cd430cb
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  IwConfig:
   lo        no wireless extensions.

   eth0      no wireless extensions.
  MachineType: Gigabyte Technology Co., Ltd. P55M-UD2
  NonfreeKernelModules: nvidia
  Package: linux (not installed)
  ProcEnviron:
   LANGUAGE=en_US:en
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-8-lowlatency root=UUID=903ba33e-b5c1-4749-ab76-e2f85a408b31 ro vga=769 quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 2.6.38-8.42~ppa2-lowlatency 2.6.38.2
  RelatedPackageVersions:
   linux-restricted-modules-2.6.38-8-lowlatency N/A
   linux-backports-modules-2.6.38-8-lowlatency  N/A
   linux-firmware                               1.52
  RfKill:

  Tags:  natty
  Uname: Linux 2.6.38-8-lowlatency x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin audio cdrom dialout lpadmin plugdev sambashare
  dmi.bios.date: 06/23/2010
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F11
  dmi.board.name: P55M-UD2
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF11:bd06/23/2010:svnGigabyteTechnologyCo.,Ltd.:pnP55M-UD2:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP55M-UD2:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: P55M-UD2
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.
  ---
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: M1010LT [M Audio Delta 1010LT], device 0: ICE1712 multi [ICE1712 multi]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/controlC0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/midiC0D0', '/dev/snd/by-path', '/dev/snd/by-id', '/dev/snd/controlC1', '/dev/snd/pcmC1D0c', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'M1010LT'/'M Audio Delta 1010LT at 0xdf00, irq 18'
     Mixer name	: 'ICE1712 - multitrack'
     Components	: ''
     Controls      : 85
     Simple ctrls  : 57
  Card1.Amixer.info:
   Card hw:1 'Camera'/'Vimicro Corp. Venus USB2.0 Camera at usb-0000:00:1a.7-4, high speed'
     Mixer name	: 'USB Mixer'
     Components	: 'USB0ac8:3420'
     Controls      : 2
     Simple ctrls  : 1
  Card1.Amixer.values:
   Simple mixer control 'Mic',0
     Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
     Capture channels: Mono
     Limits: Capture 0 - 48
     Mono: Capture 37 [77%] [on]
  CasperVersion: 1.272
  DistroRelease: Ubuntu 11.10
  IwConfig:
   lo        no wireless extensions.

   eth0      no wireless extensions.
  LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110801)
  MachineType: Gigabyte Technology Co., Ltd. P55M-UD2
  Package: linux (not installed)
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  ProcVersionSignature: Ubuntu 3.0.0-7.9-generic 3.0.0
  RelatedPackageVersions:
   linux-restricted-modules-3.0.0-7-generic N/A
   linux-backports-modules-3.0.0-7-generic  N/A
   linux-firmware                           1.56
  RfKill:

  Tags:  oneiric running-unity
  Uname: Linux 3.0.0-7-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
  dmi.bios.date: 06/23/2010
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F11
  dmi.board.name: P55M-UD2
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF11:bd06/23/2010:svnGigabyteTechnologyCo.,Ltd.:pnP55M-UD2:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP55M-UD2:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: P55M-UD2
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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