Question

13

AMD RX480 Screen flicker after update to 18.04

rated 0 times [ 13] [ 0] / answers: 1 / hits: 20407 / 1 Year ago, sun, june 19, 2022, 1:20:29

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.

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pheter

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answered 1 Year ago laceanz · Accepted 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.