this post was submitted on 25 Jan 2026
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Linux Gaming
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From your old thread:
This version crashes for me constantly too, 10-25 has been my fallback (I haven't tried the newer releases)
You mentioned that in one game you made it work by forcing mouse capture. It's possible you're losing focus in some weird way (I did also see in the system log that you had a PlasmaShell crash around 17:11) does this coincide with a freeze?
Another thing that you can try is changing the focus stealing prevention in KDE to a higher setting, this will prevent windows from stealing focus if that is the problem. It's in System Settings -> Window Behavior -> Focus tab, change Focus stealing prevention to medium or higher (you can read).
In your Reddit thread they recommended you use Wayland (PROTON_ENABLE_WAYLAND=1 %command% in the launch options), did you try that?
Now onto the logs:
In the Cyberpunk log it looks like the crash is being caused by Steam Input. This is the assertion that triggers all of the cascade of failures:
Based on some digging, it looks like the game's input detection and Steam Input do not get along so you should disable Steam Input for Cyberpunk.
PEAK logs did not show the same error (so, I assume it works just fine).