[Mageia-dev] Video/X/GL/gnome-shell issues?

Sat Jul 28 22:21:48 CEST 2012

Olivier Blin <mageia at blino.org> writes:
+
+> Olav Vitters <olav at vitters.nl> writes:
+>
+>> On Fri, Jul 27, 2012 at 11:35:44PM +0200, Olivier Blin wrote:
+>>> gdb --pid can be used to get a stack trace then
+>>
+>> gnome-shell:
+>>
+>> The hang is in thread 1. Hangs in glibc, with Pulseaudio calling it.
+>> Seems exactly like the mplayer issue. I've seen this hang before
+>> Pulseaudio 2.1.
+>>
+>> Thread 1 (Thread 0x7f975cfe8900 (LWP 2367)):
+>> #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:144
+>> #1  0x00007f97558a4aa0 in pa_threaded_mainloop_wait (m=0x21bdf00) at pulse/thread-mainloop.c:206
+>> #2 0x00007f97460aaa0b in pulse_driver_play (c=0x21b5280, id=<optimized
+>> out>, proplist=0x704c9c0, cb=<optimized out>, userdata=<optimized
+>> out>) at pulse.c:1085
+>> #3 0x00007f975955624e in ca_context_play_full (c=c at entry=0x21b5280,
+>> id=id at entry=1, p=0x704c9c0, cb=cb at entry=0x0,
+>> userdata=userdata at entry=0x0) at common.c:522
+>> #4  0x00007f97595565cf in ca_context_play (c=0x21b5280, id=1) at common.c:462
+>
+> (huge backtrace snipped)
+>
+> This looks exactly like this Debian bug, which was caused by a
+> pthread_cond_wait patch in glibc:
+> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=651746
+
+Redhat has a similar report:
+http://sourceware.org/ml/libc-alpha/2012-01/msg00002.html
+
+Both distros revert a pthread_cond_wait change.
+I'll do the same in our glibc package.
+
+-- 
+Olivier Blin - blino
+