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[Valery Frolov <fvgenn@xxxxxxxxx>]

Public bug reported:

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

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


** Tags: audio usb

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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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