SUMMARY In a Wayland session, if a keyboard shortcut is used to activate standby/sleep, the system shortly goes into standby (as seen be the power LED) and then directly wakes up again. This problem does not occur if standby is triggered using the KDE menu or via systemctl suspend, and it also does not occur on a X11 session. STEPS TO REPRODUCE 1. Log in to a Wayland session. 2. Set a keyboard shortcut for activating standby. 3. Use the keyboard shortcut. OBSERVED RESULT The system shortly goes into standby (as seen be the power LED) and then directly wakes up again. EXPECTED RESULT The system shortly goes into standby and stays that way until I press a key. SOFTWARE/OS VERSIONS Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.24.4 KDE Frameworks Version: 5.92.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION If I remember correctly, this used to in earlier 5.24.x versions (I think until 5.24.2 or 5.24.4).
Does it work as expected on X11?
Yes, on X11 it works as expected.
Would it help if I created some logs (which?) for triggering standby via the KDE menu vs. via the keyboard shortcut?
Cannot reproduce on neon unstable. Operating System: KDE neon Unstable Edition KDE Plasma Version: 5.26.80 KDE Frameworks Version: 5.100.0 Qt Version: 5.15.6 Graphics Platform: Wayland
KWin doesn't handle device wakeup, that's on a kernel or even firmware level. FWIW I can't reproduce this issue either though