It looks as if this could be a side-effect of the compiz --indirect-
rendering work-around in Amaranth's launchpad Compiz repository. I
chatted with him and the reliance on --indirect-rendering is due to be
removed in the coming weeks, so I think it is a case of wait-and-see but
keep an eye on it,
** Changed in: xorg (Ubuntu)
Status: Confirmed = Invalid
** Changed in: compiz (Ubuntu)
Status: Confirmed = Fix Released
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[gutsy] Gnome restart does not work in Tribe-5
https://bugs.launchpad.net/bugs/134809
You received this bug notification because you are a member of Ubuntu
Confirmed with Gutsy Tribe-5 32-bit.
After pressing Ctrl+Alt+Backspace the desktop clears to just the
background image. Occasional hard-disk activity (judging by LED
flashes), Caps-Lock, Scroll-Lock, Num-Lock don't respond - LEDs don't
toggle, cannot switch to virtual console using Ctl+Alt+F1
