On Mon, Sep 01, 2014 at 04:19:23PM -0400, Alan Stern wrote: > Daniel: > > I'm encountering a problem with the drm-intel-nightly branch in your > drm-intel repository. The symptom is that when I boot my laptop, at > some point during the start-up procedure the screen goes totally blank, > as though the backlight were turned off, and it remains that way. I > can't tell if the backlight really is off -- it may be that there's > just nothing being displayed -- and playing with the screen-brightness > function keys doesn't help. > > Git bisect located the source of the problem as commit d91a2cb8e510 > (drm/i915: Add 180 degree primary plane rotation support). The problem > occurs when I boot a kernel built from that commit, and it doesn't > occur when I boot a kernel built from the preceding commit > (19ac737dc3c3). > > If necessary, I can get debugging info by logging in over a network > connection. Tell me what you need. It seems like Ville and Mika already caught a similar bug today, could you give Ville's patch a go (available on the intel-gfx): drm/i915: Don't call intel_plane_restore() when the prop value didn't change Thanks, -- Damien _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
