Bug 455673 - Fullscreen games with X11 with multi-monitor setup causes second display to go black until the cursor is moved to it
Summary: Fullscreen games with X11 with multi-monitor setup causes second display to g...
Status: REPORTED
Alias: None
Product: kwin
Classification: Plasma
Component: multi-screen (show other bugs)
Version: 5.27.4
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords: multiscreen, X11-only
: 468840 (view as bug list)
Depends on:
Blocks:
 
Reported: 2022-06-20 20:03 UTC by jdreioe
Modified: 2025-02-24 17:59 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


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Description jdreioe 2022-06-20 20:03:54 UTC
SUMMARY

Whenever opening Steam games in fullscreen with X11, one of my monitors turns black until mousing over to it and the windows on that monitor behind the active window turns transparent.
I have tried this on both my laptop (with nvidia gpu) and desktop (amdgpu)  

STEPS TO REPRODUCE:

1. Add a 2nd display to setup
2. Start Plasma with X11 
3. Open any game in fullscreen mode

OBSERVED RESULT

Second display goes black until mousing over it

EXPECTED RESULT

Game opens and nothing besides this happens

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 36 (Nobara) KDE 5.24.5
(available in About System)
KDE Plasma Version: 5.24.5
KDE Frameworks Version:  5.93.0
Qt Version: 5.15.3

ADDITIONAL INFORMATION

Observed both on latest Mesa-git and latest stable Mesa.

Have reinstalled system and I have tested with no packages installed besides standard nobara install  - just games (eg. Slay The Spire, Humankind, etc.)

Observed on both RX 6700 XT GPU  and 1660 TI MaxQ (ROG G14)
Comment 1 galder 2022-06-21 19:45:24 UTC
This is rare. I'm have been using Steam with plasma 5.24.x and now 5.25.0.
I don't have this issue. The active window goes to full screen and other doesnt change at all.
However I use always the external mornitor for playing.

my setup is
Kubuntu 21.10 
Plasma 5.25.0
X11
Nvidia GPU.

Regards
Galder
Comment 2 galder 2022-06-21 19:47:26 UTC
We just need more users to report this issue.
Comment 3 Bug Janitor Service 2022-07-06 04:36:59 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 4 jdreioe 2022-07-08 06:29:23 UTC
Additional info: 

- Observed on: 
* Crusader Kings 3 (native, haven't tried with Proton)
* Hitman III (Proton)
* Euro Truck Simulator 2 (native and Proton)
* Minecraft (Native, all versions)
- I have a correction: It's only Firefox that goes black. Other programs (incl. other browsers) just "blink" and return 
- Display combination
1440p 240Hz Samsung Odyssey G7 (main gaming monitor) and ASUS TUF 24" 1080p 144Hz
ROG G14 (2020)) 1080p 120 Hz  and a 1080p 120Hz AOC monitor.
I have recorded a video to show what happens: https://youtube.com/shorts/KRYwuOLz2F8
Hope the additional information helps!
Comment 5 Bug Janitor Service 2022-07-23 04:36:25 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 6 Bug Janitor Service 2022-08-07 04:35:26 UTC
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!
Comment 7 Nate Graham 2023-04-24 18:50:52 UTC
Got a new report that it's still happening in Plasma 5.27.4; re-opening.
Comment 8 Nate Graham 2023-04-24 18:51:30 UTC
*** Bug 468840 has been marked as a duplicate of this bug. ***
Comment 9 TraceyC 2025-02-24 17:59:04 UTC
Adding the x11-only keyword