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List:       kde-bugs-dist
Subject:    [kwin] [Bug 323688] Slide effect flicker after change to OpenGL 2.0 in desktop effects.
From:       <a.skembris () gmail ! com>
Date:       2013-08-19 22:34:39
Message-ID: bug-323688-17878-qVtsyBme6b () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=323688

--- Comment #6 from a.skembris@gmail.com ---
(In reply to comment #4)
> > 1) The issue has survived multiple logout / logins and reboots.
> Just to leave absolutely no misunderstanding about this:
> Once you encountered the issue, not even rebooting resolved it (ie. it was
> there despite you didn't try to reselect GL3 again)?
Yes, the issue has survived all combinations of rebooting / changing
compositing methods I can think of.


> > 2) The issue is there when selecting [...] Xrender
> Do you use "one activity per virtual desktop"?
> (Plasma setting to eg. have different wallpapers on different VDs)

Nope, only one activity used.

> 
> Otherwise I'd rather suspect another effect to kick in here.
> Please  deactivate all other effect plugins (translucency, fade, desktop
> grid, ...) and see whether the flicker still happens.
> 

Tried disabling everything but slide effect, problem persists.


> > Selecting GL3 causes Kwin to crash and desktop effects [...]
> > If I simply select GL2 AFTER the crashes with GL3.1 occur then Kwin will crash \
> > when activating desktop effects again with GL2.
> 
> Please attach the respective backtraces, eventually error messages in
> Xorg.0.log or dmesg after this.

Xorg.0.log and dmesg show no error messages after the crash but I can attach
them if you think they'd be helpful. The backtrace of the crash after selecting
OpenGL3.1 has been attached. Regarding the few missing symbols, I have
installed the relevant debug packages for Mesa-libGL1 and libX11-6 (which
contain libGL.so.1 and libX11.so.6 respectively) but I could not get any better
results than those attached. 

Also, I should note that all desktop effects currently seem to stutter, whereas
they were very smooth before this whole affair began.

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