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List:       kde-bugs-dist
Subject:    [Bug 261323] Flip Switch causes desktop to become unresponsive
From:       Martin Gräßlin  <mgraesslin () kde ! org>
Date:       2011-04-24 12:35:58
Message-ID: 20110424123558.AA1CC863C4 () immanuel ! kde ! org
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https://bugs.kde.org/show_bug.cgi?id=261323





--- Comment #72 from Martin Gräßlin <mgraesslin kde org>  2011-04-24 14:35:55 ---
I think I understand the issue now.

During FlipSwitch we render fullscreen updates which use the code path using
the waitsync. 
So the last frame gets rendered (including the EffectFrame) but is not yet
rendered immediately 
but is synced.

During the postscreen handling the EffectFrame's internal pixmaps are deleted
which is before 
the EffectFrame is actually rendered and causing the issue. I tried just to not
free the 
EffectFrame in postscreen and can no longer reproduce it.

I will now look into a proper patch to the issue. I assume it will also fix the
bad drawable errors 
in general visible with NVIDIA blob. That sounds like the same issue to me.

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