https://bugs.kde.org/show_bug.cgi?id=482629
Bug ID: 482629
Summary: FPS games sometimes respond incorrectly to mouse input
after upgrading from 5.27.10 to 6.0.0
Classification: Plasma
Product: kwin
Version: 6.0.1
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: input
Assignee: kwin-bugs-n...@kde.org
Reporter: b...@plushkava.net
Target Milestone: ---
STEPS TO REPRODUCE
1. Use Plasma 6.0.0 or 6.0.1 over Wayland with a Razer Deathadder V2 mouse
attached
2. Start a FPS game (tested so far: gzdoom, dsda-doom, raze, dhewm3)
3. Begin or load a game so as to reach the main gameplay loop
OBSERVED RESULT
In a fresh session, there is a (seemingly 50/50) chance of the main gameplay
loop being borderline unresponsive to mouse movements from the outset. The
symptom is that, even with tremendously exaggerated physical movements of the
mouse, the game engine reponds as if receiving minute amounts of seemingly
random jitter. That is, no matter how hard or fast or move the mouse, and no
matter in what direction, the player's view is affected only minutely, and in
directions that seem little more than random. Needless to say, the game is
rendered unplayable. The only solution is to exit the game and load it again,
at which point the chances seem to become drastically higher that the game will
behave as expected.
The onset of this phenomenon coincided precisely with upgrading from Plasma
5.27.10 to 6.0.0. At the time, I upgraded to Plasma 6.0.0 by enabling the
"extra-testing" repo in Arch Linux. Since then, 6.0.1 has been made stable for
Arch and I upgraded to it by disabling the aforesaid repo and re-converging on
stable packages. The release of 6.0.1 has not helped with my issue, however.
EXPECTED RESULT
My expectation is for mouse input to always be dealt with correctly, as was the
case while using Plasma 5.27.10, and as seems to be the case in any other
environment than Plasma.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux (Linux 6.7.8)
KDE Plasma Version: 6.0.1
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
ADDITIONAL INFORMATION
Presently, the Deathadder peripheral is connected to a USB 3.0 port.
Dhewm3 implements a conventional mouse cursor for operating its UI, outside of
the main gameplay loop. Mouse input is never impacted at that point, but only
once the mouse is grabbed and gameplay begins.
I assigned the bug to kwin not because I know that kwin is responsible but
because I am not presently able to better judge where the issue might lie.
--
You are receiving this mail because:
You are watching all bug changes.
