Ubuntu – AMD RX480 Screen flicker after update to 18.04


As mentioned in the title. Was upgrading from 17.10. Having this screen flickering.

My GPU is AMD RX480

What I did:

  • Search for similar issues for 18.04, can't find any
  • Perform fresh install. Still the same.

Please help. It is very annoying. I can't work.

Best Answer

I solved it myself by using amdgpu.dc=0 as a boot parameter.

To do this, edit the file /etc/default/grub, for example using

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.

Related Question