https://bugzilla.kernel.org/show_bug.cgi?id=55941
Alex Deucher alexdeucher@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |alexdeucher@gmail.com
--- Comment #3 from Alex Deucher alexdeucher@gmail.com 2013-03-29 20:59:13 --- You have a muxless powerxpress system so there are no displays physically connected to the radeon card. The only way to utilize the radeon card is for offscreen rendering (radeon renders application frame and the frame is copied to the intel card for display). You need the new gpu hotplug features in xserver 1.13.x or 1.14 to utilize the card in that manner.