Questions[screen-corruption](ubuntu)

Graphics artifacts started appearing in many web browsers following a recent update. I run KDE through ubuntu 20.04 and am up-to-date as of 8-31-2020. My graphics card is Radeon RX 580. I have tried the non-proprietary drivers and the AMD supplied drivers, the problem shows up the same with either set of drivers. The problem occurs with all browsers I have tried (Firefox, Brave, Chrome, and Chromium). It seems to be related to layers. The artifacts are blocks that appear in the lower left triangle of the screen and flicker whenever I type, move the mouse, and even flicker in time with the blinking cursor. See two attached screen shots for samples.

So I updated my Ubuntu to 20.04 and many small squares with random pixel colors often appear on my desktop background. They are not glued to my screen though; they only appear on desktop. I've attached a screenshot.

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What can I do?

PS: This has never happened on Windows, so I guess it must be OS-related.

Workaround: Restarting Gnome with Alt+F2 and then entering r solves the problem but only until the next restart.

Update: I changed the driver to NVIDIA's driver and still no luck. Some other random pixels are now on the background. And they remained there even after I changed the driver back to X.Org X server. And one other thing, those pixels go away when I change the background, but they come back the next time Ubuntu starts. Also, changing the background and changing it back to the same one returns the pixels too. It's somehow attached to that specific photo. Plus, Ubuntu is using my Intel graphics card by default, so I don't know if NVIDIA is the problem.

Temporary solution: I changed the desktop environment to Ubuntu on Wayland (you could do that from the login screen using the little tiny settings button if you reading this are also a noob like me :D) and it's fixed for now. I saw some stuff on the Internet that it uses more power, but for now I'll stick with it until I find a solution for the default DE. Will post if I find anything.

• Ubuntu 18.04.2 LTS
• Kernel 4.15.0-45-generic
• CPU Intel® Core™ i7-8750H CPU @ 2.20GHz × 12
• GPU GeForce GTX 1050 Ti/PCIe/SSE2
• GNOME 3.28.2
• OS type 64-bit

Description
Dual boot laptop seems to awake fine with Windows 10 but not Ubuntu. When booted into Ubuntu and put it to sleep, if left a few hours then woken again, it will show the screen below. This itself goes to black after 10 seconds, presumably due to power saving. I can also still see and move the cursor, but keyboard/mouse clicks do nothing. I end up having to restart the entire laptop to get things going again.

Ubuntu always starts fine for me but after a while the text will start to corrupt to the point I cannot read it in the applications I am running and the purple background is pixelated into big squares. Obviously I can read the text on the browser but the text is corrupt in and from the url and google windows up.

Decided to give Ubuntu a try using the stand alone wubi.exe. When I'm done installing, and rebooting for the first time, I only get a black screen with a blinking text input cursor, and my caps lock and scroll lock blinks.

After another reboot, I get this screen with image corruption.

I am using an Nvidia GeForce 580 graphics card on a ASUS P7P55D PRO motherboard running Windows 7 HP 64bit.