https://bugs.kde.org/show_bug.cgi?id=474774
Bug ID: 474774
Summary: Star Citizen does not grab the mouse correctly when in
a Wayland session.
Classification: Plasma
Product: kwin
Version: 5.27.8
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: input
Assignee: kwin-bugs-n...@kde.org
Reporter: j...@emoss.org
Target Milestone: ---
SUMMARY
Hello, I'm pretty sure I opened this in the right place but if not feel free to
let me know where I should open this issue.
I've been slowly but surely transitioning to Wayland, and for the most part
this has been a pretty painless experience but I have noticed a KWin specific
bug related to how this particular game captures mouse input. It only appears
when selecting something with the 'inner thought' function in the game.
What is supposed to happen is that the mouse cursor is anchored in the middle
of the window and then you select something, however in KWin the cursor is
locked to the bottom right of the window, causing issues in this particular
title.
In other Wayland compositors: Sway, mutter, weston this issue is not observed.
STEPS TO REPRODUCE
1. Launch the game using WINE
2. Get into the game (Persistent Universe is easiest to reproduce in)
3. Hold 'F' and move the mouse
OBSERVED RESULT
Mouse will be correctly centred until mouse movement is detected, it will then
snap to the bottom right of the game window and become anchored there.
EXPECTED RESULT
Mouse cursor should be anchored in the centre of the screen, allowing you to
interact with items in the game.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Linux 6.5.3-cbert7.0.fc38.x86_64 (64-bit)
KDE Plasma Version: 5.27.8
KDE Frameworks Version: 5.109.0
Qt Version: 5.15.10
ADDITIONAL INFORMATION
This is also observed in other inventory menus in the game, pointing to
whatever API call WINE is making being given incorrect information. The mouse
cursor works when not anchored in the game.
When using gamescope with '--force-grab-cursor' passed to the micro-compositor,
the mouse cursor will correctly be centered in the game, I suspect this only
happens as gamescope takes full control of the mouse cursor.
If I can provide any additional information that can help narrow this issue
down please let me know.
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