https://bugs.freedesktop.org/show_bug.cgi?id=30007
Marek Olšák maraeo@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Summary|[r300g] kwin blur effect |[r300g] kwin thumbnails |broken |broken
--- Comment #36 from Marek Olšák maraeo@gmail.com 2010-12-14 11:24:46 PST --- Thumbnails don't work on r5xx because the r300 compiler fails to do any register allocation inside loops. Disabling the "register rename" pass may fix it.
davide, the thumbnails cannot work for you anyway because ATI X700 doesn't support loops. Not sure what's the current status in latest kwin, I am using kwin 4.5.1.