Le 14/04/22 à 08:31, Lisovskiy, Stanislav a écrit :
On Wed, Apr 13, 2022 at 08:12:20PM +0300, Jani Nikula wrote:
On Wed, 13 Apr 2022, François Valenduc <francoisvalenduc@xxxxxxxxx> wrote:
Commit 15512021eb3975a8c2366e3883337e252bb0eee5
(15512021eb3975a8c2366e3883337e252bb0eee5) causes a lof of white spots
to appears on the right upper corner of all console screens (see
https://drive.google.com/file/d/13GabEvOIKSAj5yox6ybAZEDu3Ixncw5Q/view).
git-bisect shows that this is the offending commit and if I revert it,
the problem goes away. The problem still occurs with kernel 5.18-rc2 and
to all stable trees where it was applied.
Can somebody explains what happens ?
The video card is the following: VGA compatible controller: Intel
Corporation WhiskeyLake-U GT2 [UHD Graphics 620] (rev 02) (prog-if 00
[VGA controller])
Please tell me if you need more info.
That's commit 15512021eb39 ("drm/i915: Workaround broken BIOS DBUF
configuration on TGL/RKL"), adding Cc's.
Please file a report at fdo gitlab [1] and attach dmesg etc. there.
That commit looks like it is just disabling all the planes, if wrong
dbuf/wm configuration is detected.
However it should do that only once during boot as I understand.
Are you sure that is exactly this commit which is causing this?
Does the issue appear always?
Ville Syrjälä, thoughts?
Stan
Thanks,
Jani.
[1] https://gitlab.freedesktop.org/drm/intel/wikis/How-to-file-i915-bugs
--
Jani Nikula, Intel Open Source Graphics Center
As I said, git-bisect shows it's the offending commit and if I revert
it, the problem doesn't happens. Otherwise, it always occurs.
François
