https://bugzilla.kernel.org/show_bug.cgi?id=36642
Alex Deucher alexdeucher@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |alexdeucher@gmail.com
--- Comment #4 from Alex Deucher alexdeucher@gmail.com 2012-03-25 13:35:52 --- Most recent hybrid laptops are muxless so the laptop panel is not actually connected to the discrete chip. Most likely X is failing to start on radeon since the are no connected displays. The only way to support these systems is with fairly major changes to the X server to support decoupled display and rendering. Work has begun on these changes, but they are not ready for end users yet. Can you attach your full dmesg and xorg log after trying to switch to radeon?