Am 27.08.2018 um 10:43 schrieb Jani Nikula:
On Sat, 25 Aug 2018, Lyude Paul lyude@redhat.com wrote:
From: Jan-Marek Glogowski glogow@fbihome.de
This re-applies the workaround for "some DP sinks, [which] are a little nuts" from commit 1a36147bb939 ("drm/i915: Perform link quality check unconditionally during long pulse"). It makes the secondary AOC E2460P monitor connected via DP to an acer Veriton N4640G usable again.
This hunk was dropped in commit c85d200e8321 ("drm/i915: Move SST DP link retraining into the ->post_hotplug() hook")
Fixes: c85d200e8321 ("drm/i915: Move SST DP link retraining into the ->post_hotplug() hook") [Cleaned up commit message, added stable cc] Signed-off-by: Lyude Paul lyude@redhat.com Signed-off-by: Jan-Marek Glogowski glogow@fbihome.de Cc: stable@vger.kernel.org
Resending this to update patchwork; will push in a little bit
Is there a bugzilla? Reference to a list discussion? Something with a dmesg where someone can actually verify this is the right fix?
The bug is at https://bugs.freedesktop.org/show_bug.cgi?id=107446 The original thread starts here: https://lists.freedesktop.org/archives/intel-gfx/2018-August/172940.html
Jan-Marek