[mythtv-users] Help debugging XvMC freezes
mythtv at hbuus.com
Wed Apr 23 18:09:56 UTC 2008
I would rule out a software issue since you say killing and restarting
mythfrontend fixes the problem.
Make sure you can generate a core file, e.g. ulimit -c unlimited
Start mythfrontend in a directory with lots of disk space and where you
have write permission.
When it locks up, kill the process with kill -segv
Examine the core file using gdb. Do a stack trace of each thread.
Commands of interest:
info threads will list all the threads
thread N will change the current thread to thread #N
bt will produce stack trace of the thread
If you see two or more threads in a pthread.*wait system call, then the
problem is a thread deadlock, not a hardware problem. If so, a ticket
might be in order, if you can document a reproducible scenario.
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