[mythtv-users] FrontEnd Crash

[John Pilkington]

On 25/05/16 22:09, John Pilkington wrote:
> On 25/05/16 17:40, Daryl McDonald wrote:
>> Greetings Mythizens, I just got a clean install of Ubuntu 16.04 and Myth
>> 0.28 recording last night, and editing this morning caused crashes every
>> time I tried to advance in increments smaller than one second. Is there
>> something I can do to correct this?   TIA  Daryl
>
> I had a similar setup on a box that has now moved elsewhere in the
> family;  I didn't see anything like this, but it didn't have VDPAU.  You
> might like to look at https://code.mythtv.org/trac/ticket/12004 (fixed)
> for hints on what might be happening.
>
> I've been using the editor successfully with dvb radio; with that, steps
> further down the scale than 1 s don't give reliable results - but they
> don't cause a crash.   I've tried to increase the extent of the editor's
> audio graph, as well, but have the impression that the decoder often
> doesn't put all the data that I want in the place where I hope to find it.
>
> Cheers,
>
> John P

I'll add that my main box - with MythTV in a window on a monitor - has 
been giving occasional video driver warnings, often on quitting the 
frontend but also sporadically, when running in 'Auto' painter mode.

WARNING: at drivers/gpu/drm/i915/i915_gem.c:4504 
i915_gem_free_object+0x2ba/0x310 [i915]()
WARN_ON(obj->frontbuffer_bits)

Running in Qt mode crashes with radio recordings:

QOpenGLContext::swapBuffers() called with non-exposed window, behavior 
is undefined

but it looks as if OpenGL1 might be ok.   I've just switched over to 
that.  Perhaps worth a look.

Frontend > Setup > Appearance > Paint engine.

...or show the frontend log?