KDE4 compositing won't switch on

[Georgi Kourtev]

On Wednesday 08 July 2009 17:09:15 Donn wrote:
> Kubuntu Jaunty - 64bit
> KDE 4.2.x
> Nvidia card using nvidia-glx-180
>
> Suddenly I can't enable desktop effects. The screen goes wild and comes and
> goes (from that login wallpaper with the fuzzy dots). It then reports that
> kwin has crashed... but the effects don't get enabled. Last week I could
> use them fine. I had a spell in Gnome* again (trying to get past the
> general horror of Jaunty ) but that's all.
>
> Any tips? I checked .xsession-errors and it only says stuff like:
>
> X Error: BadWindow (invalid Window parameter) 3
>   Major opcode: 20 (X_GetProperty)
>   Resource id:  0x8e00081
> Application::crashHandler() called with signal 11; recent crashes: 2
> KCrash: Application 'kwin' crashing...
> kdeinit4: preparing to launch /usr/lib/kde4/libexec/drkonqi
>
> Which is as illuminating as a power-outage...
>
> Halp!
>
> \d
>
> *Gnome which is, BTW, not much better than KDE4. It's also crashy and
> fragile. \o/ KDE4 is not alone :)

I have similar issue. During normal operation I got message that compositing 
is too slow and is automatically switched off.  It can be resumed only after 
restart.
gk