Created attachment 103628 [details] xsession-errors during wakeup If the computer is unused, the screen is blanked after a while and the monitor goes to power save mode. If I then move the mouse and/or hit a key on the keyboard, it takes roughly 15s before I can see my desktop: The monitor power first goes on, but the screen stays black. After some 8-10s the monitor goes back into powersave mode, and only after 15 s it powers on again to show my desktop. I have not seen this before. The Monitor is a Dell P2415Q (4k) Monitor, the graphics card an NVidia GTX 1060 6GB (GP106-A) using driver version 375.26 Attached is the
Created attachment 103629 [details] output from journalctl during wakeup
(sorry, hitting return sent the report before I was finished) I'm attaching the relevant parts of ~/.xsession-errors and the journalctl syslog during the wakeup phase that shows a lot activity from kded, xcb-helper and xrandr modules.
This smells a lot like a driver / monitor thing, so it's not something we can do anything about. Sorry to break that news for you, but unless this is a problem more common (meaning people with different hardware setups can reproduce), I'll file that as a upstream problem.