Comment 21 for bug 630580

I've got some issues that seems related under kubuntu 10.10.

With my integrated Intel Chips i915 (core i7 on a sony vaio VPCZ11), compositing is disabled at when kwin start.
When I enable it, some screen refresh problems occur.

Indeed, I see regularly artifacts under emacs or Yakuake (certainly with other apps, don't have check yet):
when I play with my text buffers (select text, remove text, move up and down, etc.), the windows do not refresh correctly, some text that should not be displayed persist on the screen.

It looks like the framebuffer got corrupted.

With kubuntu 10.04 there was no problem (and also with a kernel 2.6.35.7). So there is a regression somewhere.
It seems that this bug need to be reopen.