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Bug#650962: kdebase-workspace-bin: desktop is inverted



On Sat, Dec 10, 2011 at 04:37:35PM +0100, Julien Cristau wrote:
> On Sat, Dec 10, 2011 at 16:21:43 +0100, Thomas Hahn wrote:
> 
> > On Sat, Dec 10, 2011 at 03:53:59PM +0100, Julien Cristau wrote:
> > > On Sat, Dec 10, 2011 at 15:49:03 +0100, Thomas Hahn wrote:
> > > 
> > > > On Sat, Dec 10, 2011 at 02:21:59PM +0100, Julien Cristau wrote:
> > > > > On Fri, Dec  9, 2011 at 22:39:40 +0100, Thomas Hahn wrote:
> > > > > 
> > > > > > If I configure desktop effects within KDE's system settings, there 
> > > > > > is a compositing combo box where you can switch between OpenGL and XRender.
> > > > > > If I switch to OpenGL the desktop is being inverted when I press the
> > > > > > Apply pushbutton.
> > > > > > Choosing the XRender there is no such effect.
> > > > > > For the time being I have switched of Desktop Effects in KDE.
> > > > > > Hope that helps.
> > > > > > 
> > > > > Please attach your X log, and the output of glxinfo.  Also make sure
> > > > > kwin uses direct rendering.
> > > > > 
> > > > > Cheers,
> > > > > Julien
> > > > 
> > > > Attached you will find the X log, glxinfo and the diff of .xsession-errors
> > > > before and after switching on opengl.
> > > > Please note that OpenGL options have Enable direct rendering clicked, but
> > > > the info from .xsession-errors tells otherwise.
> > > > 
> > > from your glxinfo:
> > > direct rendering: No (If you want to find out why, try setting LIBGL_DEBUG=verbose)
> > > 
> > > So what does "LIBGL_DEBUG=verbose glxinfo" say?  (Don't compress the
> > > attachments it just makes it more painful to read.)
> > > 
> > > Cheers,
> > > Julien
> > 
> > I did exactly that, but the glxinfo output is identical.
> > (Diff'd the output of both glxinfo run's ...)
> > 
> Nevermind, it also says
> client glx vendor string: NVIDIA Corporation
> which means you have nvidia's closed libGL installed.  You need to get
> rid of that.
> 

removed that.
KWin issues a warning that is has crashed in the past, I ignored the warning
and switched Desktop effects on.

Maybe it would be a good idea if there is some check in these 
libglx-nvidia-alternatives packages which issues a warning if you have a 
laptop without nvidia glx hardware, so that one doesn't run into that problem.

I surely haven't actively installed the nvidia packages.
This is a i3 1st gen. Aldi laptop, cheep stuff, but good enough for my
purposes. I know there is no real dedicated graphics on it ...

Thanks and Regards
Thomas

> Cheers,
> Julien



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