From owner-freebsd-questions@FreeBSD.ORG  Sat Aug 28 06:37:54 2010
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Date: Fri, 27 Aug 2010 23:37:53 -0700
From: Yuri <yuri@rawbw.com>
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Subject: Why compositing gets disabled in KDE4?
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It worked before on the same system (~3 months ago). But after some 
updates of everything (kernel/nvidia driver/kde4) it gets disabled from 
kde4 startup. Pressing 'Resume Compositing' doesn't help.

Message pops up that some application disabled compositing, press 
Alt-Shift-F12. But this doesn't help either.

Any idea why this feature is broken?

FreeBSD-8.1-STABLE amd64
nvidia-driver-195.36.15
GeForce 9400GT
kde-4.4.5

Yuri