On 29.07.2012 22:15, Marcin Slusarz wrote: > No, the real problem is: with "noaccel" we don't register "software engine", > but vblank ISR relies on its existance and happily derefences NULL pointer. > > Now, this patch should fix it for real... Unfortunately I am still seeing the crash. Without "noaccel" it works though (until X crashes the machine, but that is a different thing). Thanks, Ortwin