Description of problem: Sound playback stops while watching movies or playing sounds on the computer. At this point no sound is produced. After a while a cracking sound comes through the speakers and subsequently sound such as computer alerts etc are once again audible. Version-Release number of selected component (if applicable): pulseaudio...0.9.15 How reproducible: Play sound of video file Actual results: Sound cuts off after a short period of time - Thus far time has not exceeded 2-3 minutes. Expected results: Continued and continuous playback. Additional info: This behaviour was first noticed after an update. Excerpts from the /var/log/yum.log and the /var/log/messages can be seen at https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4648
Sounds as if PA goes away due to CPU overload caused by a driver bug in snd_pcm_avail(). Is there anything listed regarding pulseaudio in syslog when this happens?
Yes... Excerpts of log filles... https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4648 . . . An excerpt from /var/log/messages follows: Jul 25 20:15:58 TeCHPLT kernel: gvfs-gdu-volume[2681]: segfault at c ip 006fccaa sp bfed3530 error 4 in libgdu.so.0.0.0[6f4000+22000] Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-sink.c: Increasing wakeup watermark to 30.00 ms Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: snd_pcm_avail() returned a value that is exceptionally large: 4294960240 bytes (22369584 ms). Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: Most likely this is a bug in the ALSA driver 'snd_intel8x0'. Please report this issue to the ALSA developers. Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: snd_pcm_dump(): Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: Hardware PCM card 0 'Intel ICH6' device 0 subdevice 0 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: Its setup is: Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: stream : PLAYBACK Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: access : MMAP_INTERLEAVED Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: format : S16_LE Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: subformat : STD Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: channels : 2 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: rate : 48000 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: exact rate : 48000 (48000/1) Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: msbits : 16 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: buffer_size : 16384 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: period_size : 16384 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: period_time : 341333 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: tstamp_mode : ENABLE Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: period_step : 1 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: avail_min : 16384 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: period_event : 0 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: start_threshold : -1 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: stop_threshold : 1073741824 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: silence_threshold: 0 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: silence_size : 0 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: boundary : 1073741824 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: appl_ptr : 5719783 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: hw_ptr : 5701635 Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: snd_pcm_delay() returned a value that is exceptionally large: 412780 bytes (2149 ms). Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: Most likely this is a bug in the ALSA driver 'snd_intel8x0'. Please report this issue to the ALSA developers. Jul 25 20:20:41 TeCHPLT pulseaudio[2486]: alsa-util.c: snd_pcm_dump(): 6605,1 99%
snd_pcm_avail() returned a value that is exceptionally large: 4294960240 bytes (22369584 ms). Yes, your sound driver is broken and is at fault here. *** This bug has been marked as a duplicate of bug 506075 ***