On Thu, Mar 14, 2013 at 4:15 PM, Takashi Iwai <tiwai at suse.de> wrote: > I noticed that a Haswell desktop machine with eDP gets only the blank > screen on the latest Linus tree. It works fine with 3.8, so it's a > regression since 3.9-rc1. Actually, it's not a regression. It's > three regressions in a shot! (I had to do painful bisections three > times...) > > c464b2a17c59adedbdc02cc54341d630354edc3 > drm/i915: set TRANSCODER_EDP even earlier > > d6dd9eb1d96d2b7345fe4664066c2b7ed86da898 > drm/i915: dynamic Haswell display power well support > > commit cf0a6584aa6d382f802f2c3cacac23ccbccde0cd > drm/i915: write backlight harder > > > The first commit affects no matter whether power well is on or off. > It brings the eDP output always blank. Can you please attach the xrandr output and drm.debug=0xe dmesg from booting for that hsw eDP machine quickly? Thanks, Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
