If the screen is automatically turned off due to the system becoming idle, when the screen turns back on a black screen with a (Wayland) mouse cursor is displayed. Restarting kwin restores functionality, but is obviously undesirable. The following line appears in syslog upon waking, which is likely related:
Feb 05 20:24:09 desktop kwin_wayland[125669]: kwin_wayland_drm: Presentation failed! Permission denied
If the screen is automatically turned off due to the system becoming idle, when the screen turns back on a black screen with a (Wayland) mouse cursor is displayed. Restarting kwin restores functionality, but is obviously undesirable. The following line appears in syslog upon waking, which is likely related: