20.04 Display issues with AMD GPU

Support & Help Requests Hardware
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Quick update. I found a temporary workaround for Ubuntu MATE.

  1. Boot live ISO, select safe graphics. Complete installation and shut down.
  2. On first boot, Hit "Esc" key to show GRUB menu, then "e" to edit, insert nomodeset at the end of the line that starts with "linux /boot/vmlinuz...". Press F10 to boot.
  3. Login and open "MATE Tweak".
  4. Select the third item from left panel: "Windows".
  5. In the Window Manager , switch to "Marco (No compositor)".
  6. Reboot (nomodeset will not be persistent so next boot is normal graphics mode).
  7. Enjoy.

Please note this is a temporary workaround so we can keep using Ubuntu MATE until a permanent fix is found. Once that is done, we can switch back to "Marco (Adaptive compositor)".

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