I still have this problem. It appeared on my laptop when I upgraded to
9.10 two months ago.
Log output from 'user.log' (the first and last lines are repeated in 'messages'
and all lines except the first one is repeated in 'syslog'):
Dec 23 00:31:53 laptopname pulseaudio[10579]: pid.c: Stale PID file,
overwriting.
Dec 23 00:33:02 laptopname pulseaudio[10579]: alsa-sink.c: ALSA woke us up to
write new data to the device, but there was actually nothing to write!
Dec 23 00:33:02 laptopname pulseaudio[10579]: alsa-sink.c: Most likely this is
a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA
developers.
Dec 23 00:33:02 laptopname pulseaudio[10579]: alsa-sink.c: We were woken up
with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another
value < min_avail.
Dec 23 00:34:04 laptopname pulseaudio[10579]: ratelimit.c: 109 events suppressed
dmesg also mentions ratelimit during bootup:
[ 18.734458] __ratelimit: 9 callbacks suppressed
Relevant part of lspci -vvnn:
00:1b.0 Audio device [0403]: Intel Corporation 82801I (ICH9 Family) HD Audio
Controller [8086:293e] (rev 03)
Subsystem: Hewlett-Packard Company Device [103c:30e7]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 17
Region 0: Memory at db320000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
Attached:
- ALSA information generated by http://www.alsa-project.org/alsa-info.sh
- output from cat /proc/asound/card*/codec#*
** Attachment added: "ALSA-information and /proc/asound/card*/codec#*"
http://launchpadlibrarian.net/37106410/debuginfo.tar.gz
--
pulseaudio/alsa randomly blocks or mutes sound in jaunty
https://bugs.launchpad.net/bugs/383876
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