Bug 2036600

Summary:	Mesa need a patch to fix Blender flickering and other UI problems
Product:	[Fedora] Fedora	Reporter:	Patrice FERLET <metal3d>
Component:	mesa	Assignee:	Lyude <lyude>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	35	CC:	ajax, bskeggs, caillon+fedoraproject, igor.raits, jadahl, jdelft, jglisse, john, lyude, nalimilan, nphilipp, rclark, rdieter, rhughes, rstrode, soal, tstellar
Target Milestone:	---	Keywords:	Patch
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	mesa-21.3.4-3.fc35	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-01-23 01:42:32 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Patrice FERLET 2022-01-03 10:51:29 UTC

Description of problem:

Using Blender on Fedora 35 is strongly impacted and unusable for some Intel hardware. The problem is described here:
https://gitlab.freedesktop.org/mesa/mesa/-/issues/5782

And resolution is here:
https://gitlab.freedesktop.org/mesa/mesa/-/issues/5731

Version-Release number of selected component (if applicable):
21.3.3


How reproducible:

Always...


Steps to Reproduce:
Open Blender and use 3rd button to rotate the view, the UI is flickering

Actual results:

UI is flickering

Expected results:

UI should be stable

Additional info:

I tried the patch on SRPM and rebuilt it. It's only 1 line of code that impacts ASYNC directive on Iris drivers.

Comment 1 Nils Philippsen 2022-01-04 21:09:03 UTC

Applying the patch found at https://gitlab.freedesktop.org/mesa/mesa/-/issues/5731#note_1205469 to mesa-21.3.3-1.fc35 fixes the issue of viewport flickering in Blender for me.

Comment 2 John Brooks 2022-01-05 22:59:03 UTC

This bug also exists for some QtQuick applications and mpv in certain configurations (such as -profile gpu-hq).

Comment 3 Patrice FERLET 2022-01-20 20:33:15 UTC

The package was upgraded to 21.3.5 and Blender is now unusable again.

I will try to reapply the patch to the new SRPM...

It's extremely important to fix this please.

Comment 4 Patrice FERLET 2022-01-20 20:33:51 UTC

(In reply to Patrice FERLET from comment #3)
> The package was upgraded to 21.3.5 and Blender is now unusable again.
> 
> I will try to reapply the patch to the new SRPM...
> 
> It's extremely important to fix this please.

Sorry, I meant 21.3.4

Comment 5 Patrice FERLET 2022-01-20 21:14:21 UTC

Just patched 21.3.4 version - the patch fixes the problems.

Comment 6 Lyude 2022-01-21 18:30:28 UTC

Sorry about the slow response - I will try to get to this today

Comment 7 Fedora Update System 2022-01-22 00:12:32 UTC

FEDORA-2022-d9c9d567ce has been submitted as an update to Fedora 35. https://bodhi.fedoraproject.org/updates/FEDORA-2022-d9c9d567ce

Comment 8 Joep van Delft 2022-01-22 16:57:22 UTC

I saw similar artifacts with Qutebrowser, and can confirm that the artifacts disappear after installing the proposed build, without regressions. Thanks!

Comment 9 Fedora Update System 2022-01-23 01:42:32 UTC

FEDORA-2022-d9c9d567ce has been pushed to the Fedora 35 stable repository.
If problem still persists, please make note of it in this bug report.