Public bug reported:

Problem: Screen is black when resuming from sleep. Only a few grey
squares are shown.

Software: Latest Ubuntu 22.04 (updated 21st of february). Nvidia 495
drivers.

Hardware: Ryzen 5900x, Nvidia 3080ti GPU.

Configuration: Wayland at login screen.

Analysis: Maybe Video RAM is purged during sleep and then it is not
restored when resuming.

** Affects: ubuntu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1961747

Title:
  Black screen after resume from sleep

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