I've raised https://bugs.freedesktop.org/show_bug.cgi?id=97888 I'll attach the info you requested once I get back to my machine On 21 September 2016 at 07:56, Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> wrote: > 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