On Tue, Dec 11, 2012 at 11:46:29AM +0100, Takashi Iwai wrote: > The commit [23670b322: drm/i915: CPT+ pch transcoder workaround] > caused a regression on some HP laptops with IvyBridge. The whole > laptop screen is shifted downward for a few pixels constantly. > The problem appears only on LVDS while DP and VGA seem unaffected. > Also, the problem disappears once when go and back from S3. > (S4 resume still shows the same problem.) > > This patch revives the minimum part the commit above dropped. > For fixing this regression, only the setup of CHICKEN2 bit in > cpt_init_clock_gating() is needed. > > Signed-off-by: Takashi Iwai <tiwai at suse.de> Picked up for -fixes, thanks for the patch. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch