Bug 1212467 - i915 Xorg display flashing in 2k mode
Summary: i915 Xorg display flashing in 2k mode
Status: RESOLVED WORKSFORME
: 1212468 (view as bug list)
Alias: None
Product: openSUSE Tumbleweed
Classification: openSUSE
Component: Kernel (show other bugs)
Version: Current
Hardware: Other Other
: P5 - None : Normal (vote)
Target Milestone: ---
Assignee: openSUSE Kernel Bugs
QA Contact: E-mail List
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-06-17 08:03 UTC by Michal Suchanek
Modified: 2023-11-27 18:12 UTC (History)
3 users (show)

See Also:
Found By: ---
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

Attachments
dmesg (92.95 KB, text/plain)
2023-06-17 08:03 UTC, Michal Suchanek 		Details
X log (111.19 KB, text/plain)
2023-06-17 08:33 UTC, Michal Suchanek 		Details
xrandr (2.90 KB, text/plain)
2023-06-17 08:33 UTC, Michal Suchanek 		Details
dmesg (92.95 KB, text/plain)
2023-06-17 08:34 UTC, Michal Suchanek 		Details
lshw (33.55 KB, text/plain)
2023-06-17 08:34 UTC, Michal Suchanek 		Details
dmesg 5.14 (90.78 KB, text/plain)
2023-06-17 08:38 UTC, Michal Suchanek 		Details
working xrandr (2.97 KB, text/plain)
2023-06-17 09:12 UTC, Michal Suchanek 		Details
X log again (116.78 KB, text/plain)
2023-06-17 09:13 UTC, Michal Suchanek 		Details
View All Add an attachment (proposed patch, testcase, etc.)

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Description Michal Suchanek 2023-06-17 08:03:05 UTC 
Created attachment 867636 [details]
dmesg

every few seconds the display would flash

I suspect buffer swap synchronization error

Linux localhost.localdomain 6.3.8-lp154.2.g627a49e-default #1 SMP PREEMPT_DYNAMIC Wed Jun 14 10:30:38 UTC 2023 (627a49e) x86_64 x86_64 x86_64 GNU/Linux
Comment 1 Michal Suchanek 2023-06-17 08:33:08 UTC 
Also on 5.14.21-150500.53-default
Comment 2 Michal Suchanek 2023-06-17 08:33:30 UTC 
Created attachment 867644 [details]
X log
Comment 3 Michal Suchanek 2023-06-17 08:33:53 UTC 
Created attachment 867645 [details]
xrandr
Comment 4 Michal Suchanek 2023-06-17 08:34:17 UTC 
Created attachment 867646 [details]
dmesg
Comment 5 Michal Suchanek 2023-06-17 08:34:57 UTC 
Created attachment 867647 [details]
lshw
Comment 6 Michal Suchanek 2023-06-17 08:38:09 UTC 
Created attachment 867648 [details]
dmesg 5.14
Comment 7 Michal Suchanek 2023-06-17 08:50:14 UTC 
The rendering artifact is a horizontal band a few hundred of pixels wide showing wrong content momentarily.
Comment 8 Andreas Stieger 2023-06-17 08:56:25 UTC 
*** Bug 1212468 has been marked as a duplicate of this bug. ***
Comment 9 Michal Suchanek 2023-06-17 09:12:37 UTC 
Created attachment 867649 [details]
working xrandr
Comment 10 Michal Suchanek 2023-06-17 09:13:48 UTC 
Created attachment 867650 [details]
X log again
Comment 11 Michal Suchanek 2023-06-17 09:16:12 UTC 
note that running the eDP internal display in native mode requires more bandwidth than driving the external display, and works perfectly
Comment 12 Michal Suchanek 2023-06-17 09:17:33 UTC 
unless the external display is 10bit, and the card somehow supports that
Comment 13 Michal Suchanek 2023-11-27 18:12:03 UTC 
No longer reproducible with Linux 6.5.7-lp155.4.g4e7c99b-default