----- "Lennart Poettering" <lennart at poettering.net> wrote: > On Tue, 01.09.09 00:07, Nasa (nasa01 at comcast.net) wrote: > > > I finally got some sound to work. I can start playing some music, > but after 2 - 10 > > minutes sound stops. Depending on the player it may freeze or it > may continue with > > out noticing sound has stopped... > > > > Here's what gets logged in my syslog file (it can be repeated a > couple of times): > > > > When pulseaudio crashes: > > Aug 31 04:25:43 ice-car pulseaudio[3109]: rtpoll.c: Assertion 'usec > <= ((pa_usec_t) 1000000ULL)*60ULL*60ULL' failed at > pulsecore/rtpoll.c:516, function pa_rtpoll_set_timer_relative(). > Aborting. > > Aug 31 04:34:31 ice-car pulseaudio[7316]: pid.c: Stale PID file, > overwriting. > > This is almost certainly triggered by a bug in your audio driver > which > overflows in snd_pcm_delay()/snd_pcm_avail() which causes PA's time > calculations to overflow as a result which is then caught by this > assert. PA >= 0.9.15 is actually very explicit about this issue and > tells you in syslog the driver that is broken and how exactly the > function overflowed. > > Many of these unreliabilities of the timing primitives have been > fixed > in the drivers in the recent passed. Make sure you run a fully > patched > recent kernel. > > And of course, in Fedora we tend to ship a kernel that has these > issues mostly fixed. > > Lennart Well, I happen to be using Ubuntu for this particular machine... And I didn't see them releasing an updated kernel for 9.04. However, I did see quite a few bug reports that seem related/similar to what I was describing: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/345627?comments=all https://bugs.launchpad.net/ubuntu/+source/linux/+bug/374002 http://n2.nabble.com/pulseaudio-breaks-after-update-today-td3312334.html https://bugs.launchpad.net/ubuntu/jaunty/+source/linux/+bug/345627/+viewstatus from this reading I came across two potential solutions (not home to try out right now), however they seemed aimed at fixing crackling/scratchy sound (which my setup does show, prior to it crashing) 1. add option snd-intel8x0 ac97_quirk=3 to alsa-base in /etc/modprobe. 2. add tsched=0 option to module-alsa-sink Do you know if these are good suggestions and/or if there are better ones? Thanks again. Nasa
