https://bugs.kde.org/show_bug.cgi?id=504895
Bug ID: 504895
Summary: All XWayland apps crash during system resume when a
UE5 game is running and "Lock after waking from sleep"
is disabled
Classification: Plasma
Product: kwin
Version First 6.3.5
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: xwayland
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 181801
--> https://bugs.kde.org/attachment.cgi?id=181801&action=edit
journalctl logs showing xwayland having trouble after resume
SUMMARY
When resuming from sleep with a UE5-based game running, all Xwayland apps will
crash. This ONLY happens if the "Lock after waking from sleep" setting is
disabled. I've been able to reproduce this easily with Clair Obscur: Expedition
33 and Lords of the Fallen. Sleep was triggered via Steam's Big Picture mode.
If lock screen is configured to lock after waking up, for some reason this
prevents the crash. If I am not running a UE5 game, then system resumes fine as
well, regardless of whether lockscreen is enabled or not. I was able to
successfully resume Last of Us Part 2 for example. So it seems it is the
combination of UE5 + lockscreen disabled that's the main trigger here.
After the crash happens, Xwayland gets into a weird state. Games no longer
fullscreen properly, Steam's Big Picture mode stays in a window when activated.
STEPS TO REPRODUCE
1. Disable "lock after waking from sleep" in System Settings -> Screen Locking
2. Launch a few Xwayland apps in the background (VSCode, Element Desktop, etc.)
3. Launch Steam and start Big Picture mode
4. Launch a UE5 game and load a save.
5. Go into the Big Picture overlay with your controller or via Shift + Tab and
suspend your system via the power menu
6. Turn on your system again
7. Notice that the game AND all the background Xwayland apps have disappeared
OBSERVED RESULT
The game and all background Xwayland apps crash
EXPECTED RESULT
System resumes fine.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.14.0
Qt Version: 6.9.0
Kernel Version: 6.14.7-arch2-1 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 9800X3D 8-Core Processor
Memory: 62.4 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 3090 w/ 575.51.02 drivers
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: X870E AORUS ELITE WIFI7
ADDITIONAL INFORMATION
Journalctl has the following suspicious xwayland messages:
```
May 27 15:19:06 kwin_wayland_wrapper[1333]: XWAYLAND: error marshalling
arguments for lock_pointer (signature noo?ou): null value passed for arg 2
May 27 15:19:06 kwin_wayland_wrapper[1333]: XWAYLAND: Error marshalling
request: Invalid argument
May 27 15:19:06 kwin_wayland_wrapper[1333]: (EE) failed to write to Xwayland
fd: Invalid argument
May 27 15:19:06 steam[1862]: X connection to :0 broken (explicit kill or server
shutdown).
May 27 15:19:06 kwin_wayland[1026]: kwin_xwl: The X11 connection broke (error
1)
May 27 15:19:06 kded6[1484]: X connection to :0 broken (explicit kill or server
shutdown).
May 27 15:19:06 steam[1862]: X connection to :0 broken (explicit kill or server
shutdown).
May 27 15:19:06 steam[1862]: X connection to :0 broken (explicit kill or server
shutdown).
May 27 15:19:06 steam[1862]: X connection to :0 broken (explicit kill or server
shutdown).
May 27 15:19:06 steam[1862]: X connection to :0 broken (explicit kill or server
shutdown).
May 27 15:19:06 steam[1862]: X connection to :0 broken (explicit kill or server
shutdown).
May 27 15:19:06 steam[1862]: X connection to :0 broken (explicit kill or server
shutdown).
May 27 15:19:06 steam[1862]: X connection to :0 broken (explicit kill or server
shutdown).
May 27 15:19:06 steam[1862]: X connection to :0 broken (explicit kill or server
shutdown).
May 27 15:19:06 steam[1862]: X connection to :0 broken (explicit kill or server
shutdown).
May 27 15:19:06 steam[1862]: X connection to :0 broken (explicit kill or server
shutdown).
```
I've attached the logs starting from the start of that suspend.
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