[mythtv-users] To pennguin@… Re: Ticket #10336

Yianni Vidalis yiannividalis at hotmail.com
Sun Feb 19 20:47:10 UTC 2012




> Date: Sun, 19 Feb 2012 14:08:13 -0500
> From: mtdean at thirdcontact.com
> To: mythtv-users at mythtv.org
> Subject: Re: [mythtv-users] To pennguin@… Re: Ticket #10336
> 
> On 02/18/2012 03:54 PM, Yianni Vidalis wrote:
> >
> > I am writing here because the ticket could get locked if it's used for 
> > support.
> >
> > The option you can use to run mythfrontend is
> >
> > mythfrontend -O UIPainter=Qt
> >
> > It runs ok here with it.
> 
> But for both of you, the logs indicate your driver installation is 
> broken, or something--some middle man--is getting between MythTV and the 
> video drivers.  My current guess is that you're using a Window Manager 
> that's designed for flashy OpenGL stuff and that prevents MythTV from 
> properly accessing OpenGL.  You want to disable any kind of 
> compositing/GL-based effects in your WM.  Or, for testing, just start up 
> X with twm or fluxbox or RatPoison and run mythfrontend manually and see 
> what happens.

I tried with icewm and twm. No success. (I killed the X server with ctrl+alt+bckspace between sessions.)

KDE wouldn't let me switch the composing method from opengl to XRender until I re-added composite "on" to xorg.conf. Even then, myth doesn't work. 

Now I've turned composite to disabled, all effects in KDE are unchecked and composing method is to XRender. I am still getting a black screen. Switching to init 3 and back didn't help, either.



> 
> I'll probably put in a workaround that tells MythTV not to use OpenGL if 
> the drivers give an empty string for the vendor, renderer, and version 
> information--at which point it will fall back to the old, legacy, 
> doesn't-work-with-some-themes Qt painter (which is exactly what the 
> override, above, is telling it to do).  The reason I haven't pushed that 
> change, yet is because I'd really like to see you guys fix your systems, 
> first, so we can figure out what's breaking them.  So, please don't give 
> up on fixing them and just settle for the workaround.

It makes two of us. I am willing to experiment, so if you or any other developer / user have any other suggestions, I'll be willing to try them. I really want to help fix myth work, although it's not myth's problem.
> 
> As I mentioned, your cards should work fine--as a matter of fact the 
> OpenGL requirements for the MythTV UI are so slight that even a GeForce 
> 440MX (from 2002) can do a 1920x1080 at 60Hz UI without breaking a sweat, 
> so a 10-yrs-newer card shouldn't have any issues.  We really need to 
> figure out what's breaking your system so that we can help others fix 
> theirs, as this seems to be common to at least OpenSuSE, and possibly Arch.
> 
> Mike


Thanks again, 

Yianni.
 		 	   		  
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