<div dir="ltr">Will do. </div> <div class="gmail_quote"><div dir="ltr">On Wed, 21 Sep 2016 at 07:56 Maarten Lankhorst <<a href="mailto:maarten.lankhorst@linux.intel.com">maarten.lankhorst@linux.intel.com</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hey, Op 20-09-16 om 20:45 schreef Mike Lothian: > Hi > > I've bisected back to this commit in the drm-intel-nightly branch > > 05a76d3d6ad1ee9f9814f88949cc9305fc165460 is the first bad commit > commit 05a76d3d6ad1ee9f9814f88949cc9305fc165460 > Author: Lyude <<a href="mailto:cpaul@redhat.com" target="_blank">cpaul@redhat.com</a>> > Date: Wed Aug 17 15:55:57 2016 -0400 > > drm/i915/skl: Ensure pipes with changed wms get added to the state > > If we're enabling a pipe, we'll need to modify the watermarks on all > active planes. Since those planes won't be added to the state on > their own, we need to add them ourselves. > > Signed-off-by: Lyude <<a href="mailto:cpaul@redhat.com" target="_blank">cpaul@redhat.com</a>> > Reviewed-by: Matt Roper <<a href="mailto:matthew.d.roper@intel.com" target="_blank">matthew.d.roper@intel.com</a>> > Cc: <a href="mailto:stable@vger.kernel.org" target="_blank">stable@vger.kernel.org</a> > Cc: Ville Syrjälä <<a href="mailto:ville.syrjala@linux.intel.com" target="_blank">ville.syrjala@linux.intel.com</a>> > Cc: Daniel Vetter <<a href="mailto:daniel.vetter@intel.com" target="_blank">daniel.vetter@intel.com</a>> > Cc: Radhakrishna Sripada <<a href="mailto:radhakrishna.sripada@intel.com" target="_blank">radhakrishna.sripada@intel.com</a>> > Cc: Hans de Goede <<a href="mailto:hdegoede@redhat.com" target="_blank">hdegoede@redhat.com</a>> > Signed-off-by: Maarten Lankhorst <<a href="mailto:maarten.lankhorst@linux.intel.com" target="_blank">maarten.lankhorst@linux.intel.com</a>> > Link: <a href="http://patchwork.freedesktop.org/patch/msgid/1471463761-26796-6-git-send-email-cpaul@redhat.com" rel="noreferrer" target="_blank">http://patchwork.freedesktop.org/patch/msgid/1471463761-26796-6-git-send-email-cpaul@redhat.com</a> > > The symptoms I'm seeing look like tearing at the top of the screen and > it's especially noticeable in Chrome - reverting this commit makes the > issue go away > > Let me know if you'd like me to raise a bug Please do so, it's nice to refer to when making a fix for it. Could you attach the contents of /sys/kernel/debug/dri/0/i915_ddb_info for working and not-working in it? ~Maarten </blockquote></div>