SUMMARY Mouse pointer in 5.27.5 is much more slower than before on default settings. To get it around the same speed as before I tweak pointer speed slider in settings almost to maximum. X11 session. I haven't tested on wayland. STEPS TO REPRODUCE 1. Update to 5.27.5 2. Mouse pointer is slower than before with default settings SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 5.27.5 KDE Frameworks Version: 5.106.0 Qt Version: 5.15.9 Kernel Version: 6.2.11-zen1-1-zen-dirty (64-bit) Graphics Platform: X11 Processors: 16 × 11th Gen Intel® Core™ i7-11700 @ 2.50GHz Memory: 31.2 GiB of RAM Graphics Processor: AMD Radeon RX 6800 XT Manufacturer: ASUS ADDITIONAL INFORMATION libinput: 1.23.0-1
I'm just realize that the acceleration profile has changed to the "flat" instead "adaptive"? I switch it back to the adaptive and behavior restored as previous. But, why "flat" is so slow by default...?
This is an upstream libinput issue.