On Tue, Aug 07, 2012 at 06:08:51PM +1000, Francois Rigaut wrote: > Daniel, > > nope, the hack didn't succeed. No apparent change. Ok, I've updated the reg_dumper to also dump the registers for pipe C. Can you please update your intel-gpu-tools checkout and then grab a new register dump for both i915 loaded and not loaded? To make comparing easier, please switch the panel to pipe C when i915 is loaded with $ xrandr --output eDP1 --auto --crtc 2 that way the register dumps are much easier to compare. Thanks, Daniel -- Daniel Vetter Mail: daniel at ffwll.ch Mobile: +41 (0)79 365 57 48