APPLIED/cmt: [PATCH V2 0/1][SRU][E] drm/i915/fbc: disable framebuffer compression on IceLake

You-Sheng Yang vicamo.yang at
Fri Sep 6 09:43:29 UTC 2019

On 2019/9/6 4:37 AM, Seth Forshee wrote:
> On Mon, Sep 02, 2019 at 08:18:53PM +0800, You-Sheng Yang wrote:
>> BugLink:
>> [Impact]
>> 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
>> experience.
>> [Fix]
>> 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. Verified on pre-launch ICL
>> platforms.
>> [Regression Risk]
>> Low. The work-around for GeminiLake was landed to Linux stable 4.14.125
>> and has been backported to B/D.
> The format of your buglink is incorrect and leads to a "Lost something?"
> page in launchpad.. I fixed it when applying, but please use the
><number> format in the fugure.

Thank you.

> Applied to eoan/master-next and unstable/master, thanks!

You-Sheng Yang

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