This is a regression towards 3.6. Occurs when starting X.
I had already reported this before -rc1 and -rc2, on 10. and 16. October.
This is with noaccel=1. Without the option, the machine hangs on a black screen as soon as X starts up (which has always been like that).
Tell me if you need more information.
Ortwin
dri-devel@lists.freedesktop.org