The problem definitely appears before 2.6.31-rc1. I suspected I made a mistake at one point and started over with a bisect limited to drivers/gpu and include/drm. The following will reproduce what I have at this point:
Maybe 4410f3 (fbdev: add support for handoff from firmware to hw framebuffers) is the bad commit... The others don't appear to make any hardware specific changes. When I resume bisecting, I'll check that commit and its parent.
The problem definitely appears before 2.6.31-rc1. I suspected I made a mistake at one point and started over with a bisect limited to drivers/gpu and include/drm. The following will reproduce what I have at this point:
git bisect start 517d0869 v2.6.30 f2cb5d8 -- drivers/gpu/ include/drm/
Maybe 4410f3 (fbdev: add support for handoff from firmware to hw framebuffers) is the bad commit... The others don't appear to make any hardware specific changes. When I resume bisecting, I'll check that commit and its parent.