After I installed Ubuntu 18.04, I started having this weird problem with Chromium browser (see screenshots). It does not appear all the time however. It happens often when I maximize Chromium from minimized (I forgot if it ever happened when I start Chromium). It goes away sometimes by just scrolling the page, changing tab, or minimizing-maximizing Chromium again.

Chromium pixelated problem

Chromium pixelated problem

So far, only Chromium seems to have this problem. Firefox and other software I am using seem to be fine.

So, how do I fix this? Thanks.

EDIT: I don't know if it's relevant, but I am using AMD RX-550 graphics card with built-in Ubuntu drivers (i.e. I did not install any additional driver).

EDIT AGAIN: This problem seems to have stopped after I disabled hardware acceleration in Chromium settings. But still, I wonder why it happens with hardware acceleration enabled.

  • Interesting. I have something similar happening in Firefox on Arch Linux, but only when I move it from using the right half of the screen to the left half (Super+→ and Super+←). – rausch Aug 15 '18 at 4:24

The RX550 is on the gpu blacklist, see https://wiki.archlinux.org/index.php/Chromium#Force_GPU_acceleration

I have the same issue since 17.10 with the RX550. It's a mess.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.