XFCE

X server works correctly. Mouse cursor is working. It is possible to switch to greeter and login as another user to get GUI working as another user.

# dm-tool switch-to-greeter

Another options to try: xscreensaver-command -d or loginctl unlock-sessions

Possible cause:

• light-locker: remove and use xfce4-screensaver
• nvidia driver
• multiple monitors + NVIDIA
• LUKS
  • systemctl start nvidia-persistenced.service asks for password for unlocking LUKS (which is already unlocked!)

Resources:

• SOLVED] Black screen with mouse cursor after resume from lock
• [SOLVED] Black screen after unlocking lock screen
  • xfconf-query -c xfwm4 -p /general/vblank_mode -t string -s “off” –create
• Screen goes dark after suspending or locking from Xfce logout
• XFCE blank/black screen with cursor after login (solution)

The solution for me was to delete ~/.config/xfce4/xfconf/xfce-perchannel-xml/displays.xml

• https://wiki.archlinux.org/title/Xfce#Black_screens_at_boot_with_NVIDIA_and_multiple_monitors
• black screen at desktop login [GTX 750 Ti] [390.25]