I am having this same error when using a Zalman ZM-RSSC External USB 5.1 Sound adapter. The machine is a fresh install of LUBUNTU 14.04. Before upgrading my HTPC, I was using this same sound adapter with another PC running LUBUNTU 12.04 and did not get this error. I get this error logged whenever any application is outputing sound. I primarily use the PulseAudio interface from VLC and stream video from NetFlix using the Pipelight facility with Firefox. (Super praise and thanks for everyone that worked on getting NetFlix working so great with Ubuntu.)
I did not originaly report this bug. I'll try posting the "apport- collect 1333002" output that was requested and has not been provided yet. While sound continues to work despite this error being logged, these repeated errors accumulate and make logs difficult to use. My deepest thanks to all involved in Ubuntu development and maintenance, Greg Tippitt ** Tags added: apport-collected trusty -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1333002/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
