SUMMARY STEPS TO REPRODUCE System Settings > Mouse > Configure Extra Buttons Click Add Binding Press the mouse button for which you want to add a key binding. OBSERVED RESULT No mouse buttons have an effect, except back button takes back to System Settings > Mouse EXPECTED RESULT Should be trivial to configure mouse back and mouse forward buttons (and scroll wheel). SOFTWARE/OS VERSIONS Operating System: Kubuntu 25.10 KDE Plasma Version: 6.4.5 KDE Frameworks Version: 6.17.0 Qt Version: 6.9.2 Kernel Version: 6.17.0-5-generic (64-bit) Graphics Platform: Wayland ADDITIONAL INFORMATION
And please consider accepting them as "modifiers" ! This is very important in some use cases, such as "moving a window" while holding an extra button. Most other WM can do it (openbox, wayfire come to mind), but kwin has never been able to do so.
What's your mouse?
(In reply to Nate Graham from comment #2) > What's your mouse? SteelSeries Rival 310
In the meantime I found I can get around this by using https://github.com/sezanzeb/input-remapper
(In reply to Nate Graham from comment #2) > What's your mouse? Mine is identified as "SOAI Gaming Mouse" (dmesg) or "Xenta Gaming Mouse" (lsusb). But I dont think it matters, it provides standard numbered extra keys. It was a breeze to configure with other WM.
FWIW this "Configure Extra Buttons" feature has never worked for me, either. In the past I've tried it with the Kensington Expert and Slimblade trackballs. I currently have a Ploopy Adept.
*** Bug 511021 has been marked as a duplicate of this bug. ***
With Operating System: openSUSE Tumbleweed 20251024 KDE Plasma Version: 6.5.0 KDE Frameworks Version: 6.19.0 Qt Version: 6.10.0 Kernel Version: 6.17.4-1-default (64-bit) Graphics Platform: Wayland I get to "Enter the new key combination for Extra Button 1:" and it catches keypresses but not mouse clicks, e.g. can't set "Ctrl + left click".
Moved to Bug 511321 Wishlist: Allow advanced mouse button remapping to include keyboard modifiers and other mouse clicks