Launchpad has imported 3 comments from the remote bug at https://bugs.freedesktop.org/show_bug.cgi?id=49608.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2012-05-08T02:54:58+00:00 Charles Lindsay wrote: When running PulseAudio, if I'm playing music via any source (Exaile, Totem, Flash in Firefox or Chromium, VLC, etc.) every few minutes the audio will skip once or twice. top doesn't show any process eating CPU any more when it happens. dmesg doesn't show anything. Nothing else seems to be affected. It doesn't seem to happen regularly. I just installed Ubuntu 12.04 from scratch (with pulseaudio 1:1.1-0ubuntu15), but the same thing happened in 10.04 on the same hardware. Uninstalling the PulseAudio packages and going back to ALSA gives me no issues whatsoever, which is how I know the issue is with PulseAudio. I'm using my onboard audio device: $ lspci | grep Audio 00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) Following mailing list instructions, pulseaudio -vvvv --log-time shows during a skip: ( 684.030| 5.000) I: [alsa-sink] alsa-sink.c: Underrun! ( 684.030| 0.000) I: [alsa-sink] alsa-sink.c: Increasing minimal latency to 26.00 ms ( 684.030| 0.000) D: [alsa-sink] alsa-sink.c: Latency set to 26.00ms ( 684.030| 0.000) D: [alsa-sink] alsa-sink.c: hwbuf_unused=60952 ( 684.030| 0.000) D: [alsa-sink] alsa-sink.c: setting avail_min=15944 ( 684.030| 0.000) D: [alsa-sink] alsa-sink.c: Latency set to 26.00ms ( 684.030| 0.000) D: [alsa-sink] alsa-sink.c: hwbuf_unused=60952 ( 684.030| 0.000) D: [alsa-sink] alsa-sink.c: setting avail_min=15944 ( 684.031| 0.000) D: [alsa-sink] protocol-native.c: Underrun on 'ALSA Playback', 0 bytes in queue. ( 684.036| 0.004) D: [alsa-sink] protocol-native.c: Requesting rewind due to end of underrun. ( 684.036| 0.000) D: [alsa-sink] alsa-sink.c: Requested to rewind 10940 bytes. ( 684.036| 0.000) D: [alsa-sink] alsa-sink.c: Limited to 3320 bytes. ( 684.036| 0.000) D: [alsa-sink] alsa-sink.c: before: 830 ( 684.036| 0.000) D: [alsa-sink] alsa-sink.c: after: 830 ( 684.036| 0.000) D: [alsa-sink] alsa-sink.c: Rewound 3320 bytes. ( 684.036| 0.000) D: [alsa-sink] sink.c: Processing rewind... ( 684.036| 0.000) D: [alsa-sink] sink.c: latency = 1337 ( 684.036| 0.000) D: [alsa-sink] sink-input.c: Have to rewind 3320 bytes on render memblockq. ( 684.036| 0.000) D: [alsa-sink] source.c: Processing rewind... ( 696.234| 12.197) I: [alsa-sink] alsa-sink.c: Underrun! ( 696.234| 0.000) I: [alsa-sink] alsa-sink.c: Increasing wakeup watermark to 15.99 ms ( 702.033| 5.799) I: [alsa-sink] alsa-sink.c: Underrun! ( 702.033| 0.000) I: [alsa-sink] alsa-sink.c: Increasing minimal latency to 36.00 ms ( 702.033| 0.000) D: [alsa-sink] alsa-sink.c: Latency set to 36.00ms ( 702.033| 0.000) D: [alsa-sink] alsa-sink.c: hwbuf_unused=59188 ( 702.033| 0.000) D: [alsa-sink] alsa-sink.c: setting avail_min=15680 ( 702.033| 0.000) D: [alsa-sink] alsa-sink.c: Latency set to 36.00ms ( 702.034| 0.000) D: [alsa-sink] alsa-sink.c: hwbuf_unused=59188 ( 702.034| 0.000) D: [alsa-sink] alsa-sink.c: setting avail_min=15680 ( 702.034| 0.000) D: [alsa-sink] protocol-native.c: Underrun on 'ALSA Playback', 0 bytes in queue. ...and it goes on. The "Underrun!" messages alone happened a few times before, but it didn't skip. I'd like to use PulseAudio, but it's pretty annoying having audio skip all the time. Reply at: https://bugs.launchpad.net/pulseaudio/+bug/996906/comments/0 ------------------------------------------------------------------------ On 2012-05-08T08:17:13+00:00 Wangxingchao2011 wrote: > > ( 684.030| 5.000) I: [alsa-sink] alsa-sink.c: Underrun! > ( 684.030| 0.000) I: [alsa-sink] alsa-sink.c: Increasing minimal latency to > 26.00 ms > ( 684.030| 0.000) D: [alsa-sink] alsa-sink.c: Latency set to 26.00ms The latency is too small, it will make pulseaudio more busy and could not read enough data. So would you have a try to tune the default buffer size and check what will happen? for me i once met similar case, flood of underrun message caused by too little buffer size, it become better by tune "default-fragment-size-msec" at: /etc/pulse/daemon.conf > > ...and it goes on. > > The "Underrun!" messages alone happened a few times before, but it didn't > skip. > > I'd like to use PulseAudio, but it's pretty annoying having audio skip all the > time. Reply at: https://bugs.launchpad.net/pulseaudio/+bug/996906/comments/1 ------------------------------------------------------------------------ On 2012-05-09T05:08:47+00:00 Charles Lindsay wrote: Changed default-fragment-size-msec from 10 to 100; still happens. Reply at: https://bugs.launchpad.net/pulseaudio/+bug/996906/comments/4 ** Changed in: pulseaudio Status: Unknown => Confirmed ** Changed in: pulseaudio Importance: Unknown => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/996906 Title: periodic audio skips with Intel HDA To manage notifications about this bug go to: https://bugs.launchpad.net/pulseaudio/+bug/996906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
