[mythtv-users] GL problem in Mythfrontend after Firefox/ BBC iPlayer crash

[Jarod Wilson]

On Jul 9, 2009, at 3:32 PM, John Pilkington wrote:

> Erik Hovland wrote:
>>>> On Wed, Jul 8, 2009 at 7:04 AM, John Pilkington <J.Pilk at tesco.net
>>>> <mailto:J.Pilk at tesco.net>> wrote:
>>>>
>>>>   Using another Mythbox as a guide I was able to step through the
>>>>   menus to select Qt instead of Open GL. Reselecting OpenGL  
>>>> produced a
>>>>   usable system again, but I'll probably use Qt until the other
>>>>   problems are resolved.
>>>>
>>>>   Have other people had success with the BBC/Adobe systems on a  
>>>> 64-bit
>>>>   system (mine is FC10 with Yeechang's modified 0.21 fixes), and,  
>>>> more
>>>>   urgently, can anyone suggest a less cumbersome way of recovering
>>>>   from the QGL 'invalid context'?  Changing the OpenGL Settings  
>>>> in the
>>>>   nVidia utility didn't help.
>>>>
>>>>
>>>> Regarding your qt/opengl issues: I had similar problems with menus
>>>> following a system crash (caused by HVR-2250).
>>>> Try launching frontend with "mythfrontend -O ThemePainter=qt ..."  
>>>> to force
>>>> qt if your menus disappear.  See this thread for more details:
>>>> http://www.gossamer-threads.com/lists/mythtv/users/387405
>>> Of course!! - I've used the -O switch before - and I should have  
>>> searched
>>> before posting.  Thanks anyway :-)
>> Strangely, the ThemePainter issue came up in my thread about gentoo
>> and disappearing menus.  I had tried ThemePainter but stupid me, I
>> only tried ThemePainter=qt by itself. It didn't work. And my problem
>> went away later. Yesterday my disappearing menus disappeared again.  
>> So
>> I tried the ThemePainter trick again. But with the twist suggested
>> here and in the linked to thread. First I fired up mythfrontend w/ -O
>> ThemePainter=OpenGL. Then I killed it and fired up mythfrontend w/ -O
>> ThemePainter=qt. The menus reappeared! Note that my frontend has
>> always repored that qt is the theme painter. Every time it was launch
>> except when OpenGL was forced. But still this trick worked. There is
>> something subtle going on back there.
>> E
> I had always assumed that the ThemePainter defined the mechanism  
> used to paint the TV/DVD etc moving pictures onto the screen - like  
> an earlier version of VDPAU; I now get the feeling that it's a Myth- 
> specific thing that may actually affect only the painting of the  
> Myth themes, menus etc.  If so, that would explain why I haven't  
> seen much difference in picture quality when changing the  
> ThemePainter - and I perhaps won't worry so much about making the  
> choice!

Yes indeed, your chosen theme painter ONLY applies to the gui theme.  
Has absolutely nothing to do with video playback.

-- 
Jarod Wilson
jarod at wilsonet.com