Question

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Ubuntu 20.04 wakes up to pixelated static screen

rated 0 times [ 0] [ 0] / answers: 1 / hits: 1628 / 2 Years ago, tue, february 8, 2022, 8:00:34

Issue:

When I wake up my computer after suspending it, I can only see a pixelated static screen. I cannot go further from this screen, so I always end up rebooting the computer. This issue only happens after sleep, never after reboot or when turning on the computer.

System:

Model: ThinkPad E14 Gen 2 (14”) AMD Laptop

Processor: AMD® Ryzen 5 4500u with radeon graphics × 6

Graphics: AMD® Renoir

OS: Ubuntu 20.04 LTS

Extra info:

I have tried updating the system again and reinstalling the drivers, but this didn't solve the problem.

Extra info 2 (edit):

When connected to a monitor, the monitor does show the normal screen, but the laptop screen is still pixelated.

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rryble

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answered 2 Years ago mance · Accepted Answer

I just started having the same problem with my Acer Swift 3 (AMD Ryzen 7 4700U with Radeon graphics) on Ubuntu 20.04.3.

My kernel was a 5.13 version. When I chose a 5.11 kernel in Grub I didn't see the issue reappear. And today I updated to version 5.15.16 and I haven't seen it reoccur since. The release notes mention updates for AMD GPUs, so hopefully that's the fix for our problem.

(There are different ways to do the kernel update, but I just downloaded the 3 appropriate deb files for my system, ran sudo dpkg -i *.deb, and disabled secure boot on my machine)