Am Montag, den 12.05.2014, 07:33 +0100 schrieb Chris Wilson: > On Sun, May 11, 2014 at 07:40:57PM +0200, Daniel Vetter wrote: > > On Sun, May 11, 2014 at 11:02 AM, Dave Airlie <airlied@xxxxxxxxx> wrote: > > > On 11 May 2014 18:28, Thomas Meyer <thomas@xxxxxxxx> wrote: > > >> Hi, > > >> > > >> 3.14.3 works as expected. > > >> 3.15-rc5 shows a strange behaviour: When resuming from ram the X server > > >> seems to be disfunctional. > > >> > > >> I see this WARNING in the kernel log before suspend to ram in the early > > >> boot process: > > > > Doesn't ring a bell really. > > Same symptoms as > https://bugs.freedesktop.org/show_bug.cgi?id=76554 > -Chris > bisected this to: # first bad commit: [78f2975eec9faff353a6194e854d3d39907bab68] drm/i915: Move all ring resets before setting the HWS page commit 78f2975eec9faff353a6194e854d3d39907bab68 Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Date: Wed Apr 2 16:36:07 2014 +0100 drm/i915: Move all ring resets before setting the HWS page In commit a51435a3137ad8ae75c288c39bd2d8b2696bae8f Author: Naresh Kumar Kachhi <naresh.kumar.kachhi@xxxxxxxxx> Date: Wed Mar 12 16:39:40 2014 +0530 drm/i915: disable rings before HW status page setup we reordered stopping the rings to do so before we set the HWS register. However, there is an extra workaround for g45 to reset the rings twice, and for consistency we should apply that workaround before setting the HWS to be sure that the rings are truly stopped. Reference: http://lkml.kernel.org/r/20140423202248.GA3621@xxxxxxxxxxxxxxxx Tested-by: Pavel Machek <pavel@xxxxxx> Cc: Naresh Kumar Kachhi <naresh.kumar.kachhi@xxxxxxxxx> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Reviewed-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx> Reverting above commit from current linus' master tree makes the display server behave correctly after resume from ram. with kind regards thomas _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
