Screen flicker:
sudoedit /etc/default/grub
Find the line beginning GRUB_CMDLINE_LINUX_DEFAULT
and add the text amdgpu.dc=0
between the double quotes (""
). Leave any other parameters as they are. For example, you may end up with a line like this:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash amdgpu.dc=0"
Save the file and exit, and then run
sudo update-grub
to write the configuration, and reboot.