[mythtv-users] GL problem in Mythfrontend after Firefox/ BBC iPlayer crash
J.Pilk at tesco.net
Thu Jul 9 19:32:52 UTC 2009
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:
>> 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.
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!
Perhaps someone would explain its role - or quote a URL?
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