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[Greg Tippitt <gtippitt@xxxxxxxxxxxxx>]

ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  gtippitt   1847 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
CurrentDesktop: LXDE
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=UUID=b78c58f2-95b7-ee49-0386-8a57c3c766e2
InstallationDate: Installed on 2014-06-29 (13 days ago)
InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
IwConfig:
 eth0      no wireless extensions.
 
 eth1      no wireless extensions.
 
 lo        no wireless extensions.
MachineType: Supermicro H8DCE
NonfreeKernelModules: nvidia
Package: linux (not installed)
ProcFB:
 
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-30-generic root=UUID=4c7df539-896e-4e45-ac05-d3e39a3d4e05 ro nomdmonddf nomdmonisw
ProcVersionSignature: Ubuntu 3.13.0-30.55-generic 3.13.11.2
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-30-generic N/A
 linux-backports-modules-3.13.0-30-generic  N/A
 linux-firmware                             1.127.4
RfKill:
 
Tags:  trusty
Uname: Linux 3.13.0-30-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm boinc cdrom dip lpadmin nopasswdlogin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 07/25/2006
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 080012
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: H8DCE
dmi.board.vendor: Supermicro
dmi.board.version: 2.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080012:bd07/25/2006:svnSupermicro:pnH8DCE:pvr1234567890:rvnSupermicro:rnH8DCE:rvr2.0:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: H8DCE
dmi.product.version: 1234567890
dmi.sys.vendor: Supermicro

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https://bugs.launchpad.net/bugs/1333002

Title:
  usb audio related bug

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Jun 23 00:40:03 lxf kernel: [ 2949.825841] retire_playback_urb: 827 callbacks suppressed
  Jun 23 00:40:08 lxf kernel: [ 2954.834314] retire_playback_urb: 827 callbacks suppressed
  Jun 23 00:40:13 lxf kernel: [ 2959.842780] retire_playback_urb: 827 callbacks suppressed
  Jun 23 00:40:18 lxf kernel: [ 2964.851254] retire_playback_urb: 827 callbacks suppressed
  ......... permanently

  when I unplugged my usb audio device, the messages stopped:

  Jun 23 00:44:34 lxf kernel: [ 3220.281248] retire_playback_urb: 827 callbacks suppressed
  Jun 23 00:44:37 lxf pulseaudio[2516]: [alsa-sink-USB Audio] alsa-util.c: Got POLLNVAL from ALSA
  Jun 23 00:44:37 lxf pulseaudio[2516]: [alsa-sink-USB Audio] alsa-util.c: Could not recover from POLLERR|POLLNVAL|POLLHUP with snd_pcm_prepare(): Нет такого устройства
  Jun 23 00:44:37 lxf kernel: [ 3223.249863] usb 2-1.2: USB disconnect, device number 4

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