Created attachment 174028 [details] journalctl log when the screen is black. SUMMARY After resuming from sleep, the display does not receive a signal. This occurs both on the lock screen and after blindly unlocking the system by entering the password. When switching to another TTY, the signal is restored, but switching back to the TTY running X11 causes the signal to be lost again. The time it takes to recover video output on X11 varies from seconds to minutes. STEPS TO REPRODUCE 1. Leave the system idle until the screen blanks (signal lost, but screen stays on). 2. Attempt to wake the screen by moving the mouse or pressing keys. OBSERVED RESULT The screen stays black (no signal), even though the keyboard is functional. It could take more than a minute before the signal is restored. Switching to another TTY works, but switching back to X11 cuts the signal again. EXPECTED RESULT The display should resume as soon as the system receives input (mouse movement or keyboard press). SOFTWARE/OS VERSIONS KDE Plasma 6.0.5 KDE Framework 6.5.0 Qt 6.7.2 ADDITIONAL INFORMATION Using X11 Nvidia GTX 1080 Ti (Driver version: 550.107.02)
If you press Shift+Alt+F12 a couple of times, is the screen still black?
(In reply to Vlad Zahorodnii from comment #1) > If you press Shift+Alt+F12 a couple of times, is the screen still black? I had to change to disable/enable compositor to a different shortcut for it to do anything, but at least once using this worked. I'm not sure it's consistent, though.
Adding the x11-only keyword