STEPS TO REPRODUCE 1. boot your system 2. when the login screen (SDDM) shows up, notice that both keyboard and mouse do not work 3. wait 50 seconds until blur effect is activated 4. move cursor or press any key: now both keyboard and mouse work as expected EXPECTED RESULT both keyboard and mouse always work with the login screen SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 5.16.0 KDE Frameworks Version: 5.59.0 Qt Version: 5.12.3
*** This bug has been marked as a duplicate of bug 398115 ***