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 <cpaul@xxxxxxxxxx> > 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 <cpaul@xxxxxxxxxx> > Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx> > Cc: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx> > Cc: Hans de Goede <hdegoede@xxxxxxxxxx> > Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> > Link: http://patchwork.freedesktop.org/patch/msgid/1471463761-26796-6-git-send-email-cpaul@xxxxxxxxxx > > 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 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html