Re: Radeon 6450 + Mesa 9.2.5 + compiz

[Taylor R Campbell <campbell+netbsd-tech-x11%mumble.net@localhost>]

   Date: Tue, 4 Nov 2014 17:34:51 +0000 (UTC)
   From: Mariusz Wawrzyniak <rowerek%gmail.com@localhost>

    Everything runs almost fine (except some artifacts, color inverted small
   areas on gtk apps, etc.) until I run more tabs in firefox.  
   Computer reboots, dumps the core and later /var/log/messages look 
   like this:
   ...

Can you update sys/external/bsd/drm2/ttm/ttm_bo_vm.c to r1.6 and try
again?