Thanks for the bug report. Please edit /etc/default/grub and change:

  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

to:

  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.enable_psr=0"

and then run:

  sudo update-grub

and reboot.

Does that fix the problem?

** Package changed: xorg (Ubuntu) => ubuntu

** Changed in: ubuntu
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1945309

Title:
  Screen flickering on Ubuntu 20.04 - HP Spectre X360 with Intel Skylake
  GT2 [HD Graphics 520]

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