https://bugs.freedesktop.org/show_bug.cgi?id=33185

--- Comment #12 from Marek Olšák maraeo@gmail.com 2011-02-22 08:16:55 PST --- (In reply to comment #10)

Created an attachment (id=43244)

--> (https://bugs.freedesktop.org/attachment.cgi?id=43244)

kWin backtrace #2

This backtrace doesn't make sense. There's a NULL pointer check in r300_buffer_create, so get_cs_handle shouldn't be called at all. Have you installed the driver properly?