[PATCH 0/1][SRU][E] drm/i915/fbc: disable framebuffer compression on IceLake

You-Sheng Yang vicamo.yang at canonical.com
Wed Aug 28 07:39:59 UTC 2019

BugLink: https://bugs.launchpad.net/ubuntu/bug/1840236

On IceLake platforms there might be a thin, horizon strap of corruption
image at the top of screen randomly after some series of window
operations and disappears within a second or so. This is found on
multiple platforms and is quite annonying that results in bad user

The upstream bug has been filed for previous platforms, e.g. GeminiLake
for an year or so, still working in progress, and so far this only known
work-around is to turn off framebuffer compression on affected platforms.

[Test Case]
The most easy way is to observe if such corruption appears during the
transition from GDM to gnome-shell.

[Regression Risk]
Low. The work-around for GeminiLake was landed to Linux stable 4.14.125
and has been backported to B/D.

You-Sheng Yang (1):
  UBUNTU: SAUCE: drm/i915/fbc: disable framebuffer compression on

 drivers/gpu/drm/i915/intel_fbc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)


More information about the kernel-team mailing list