Le 14/04/22 à 11:51, Saarinen, Jani a écrit :
-----Original Message-----
From: Intel-gfx <intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Jani
Nikula
Sent: torstai 14. huhtikuuta 2022 11.32
To: François Valenduc <francoisvalenduc@xxxxxxxxx>; Lisovskiy, Stanislav
<stanislav.lisovskiy@xxxxxxxxx>
Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx
Subject: Re: [Intel-gfx] commit 15512021eb3975a8c2366e3883337e252bb0eee5
causes white spots in console screens
On Thu, 14 Apr 2022, François Valenduc <francoisvalenduc@xxxxxxxxx> wrote:
Le 14/04/22 à 10:03, Lisovskiy, Stanislav a écrit :
On Thu, Apr 14, 2022 at 08:33:35AM +0200, François Valenduc wrote:
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-bu
gs
--
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
Does it just happen all the time or some steps/certain circumstances
needed for it to happen?
Only suspicion after looking briefly is that once suspend/resume is
done it might be messing something up. Just a quick guess..
Stan
It occurs permantently as soon as I boot my computer.
I'd appreciate that bug being filed, and the discussion moved there, so all the
details and history are in one place.
Agree.
Thanks,
Jani.
--
Jani Nikula, Intel Open Source Graphics Center
As requested, I filled a bug on freedesktop
(https://gitlab.freedesktop.org/drm/intel/-/issues/5711)
