[mythtv-users] Playback freeze/lockup + kernel panic
Jarod Wilson
jarod at wilsonet.com
Sun Jan 31 04:40:29 UTC 2010
On Sat, Jan 30, 2010 at 8:50 PM, steve <networks1 at cox.net> wrote:
> After a new build (FC12,dual core 3 ghz, 4 gb memory,HDPVR,nvidia 8400gs)
> recording is working great. But on playback after some interval the
> frontend freezes. Symptoms:
>
> About half the time, the screen goes black. Other times it just freezes on
> a frame.
>
> In most but not all cases, the caps lock and scroll lock lights on the
> keyboard flash indicating a kernel panic.
>
> In all cases the system is locked up and won’t respond to any keyboard or
> other input, and requires a hard reset.
Can you ssh in? I've seen a system hard-lock during vdpau playback,
and not respond to keystrokes or mouse, but have still been able to
ssh in.
> The interval before the lockup is not consistent, even when playing the same
> recording.
Likely random memory corruption or some sort of race condition
somewhere in kernel-space.
> There are no messages in the frontend or backend log indicating a problem.
>
> What I’ve tried:
>
> Since this is a new box and I’m getting the kernel panic, I checked for bad
> memory. Memtest86+ shows no problems.
>
> I unchecked “enable realtime priority” to see if that would help; it didn’t.
>
> What else can I do?
Get a stack trace. Hook up serial console or set up kdump if you have
to. Should get a good idea of where to look simply from the traceback.
Not really a whole lot else you can do without it. You could also try
an older or newer kernel, to see if its a regression or something
already fixed.
--
Jarod Wilson
jarod at wilsonet.com
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