Screen stays off after waking up

I have this configuration …
· System Settings > Hardware > Power Management > Energy Saving:

  • Screen Energy Saving: 5 minutes

After waking up the screen is black and I only see the mouse cursor.
I don’t see the desktop or the task manager bar.
The keyboard is still working.
I can change between apps with Alt+Tab and I can open apps assigned to keys, Meta+E > Dolphin, for example.

I’ve seen an old post explaining the same issue but I’m afraid it had no solutions.

Any ideas?

I really appreciate any help you can provide.

My system: (Intel i9 + internal Intel GPU)

  • KDE Plasma: 5.27.4
  • KDE Frameworks: 5.104.0
  • Qt: 5.15.8
  • Kernel: 6.1.23-1
  • Graphics: X11