I've got a monitor that has a bunch of grey vertical lines displayed on it, and also the resolution looks off. It's connected via HDMI, and running Ubuntu 24.04. I tried switching to an HDMI to DP cord/and using a different port on my graphics card, but no change. I also booted into Linux Mint and had the same issue. When I was running Windows 10 (recently), it worked fine. My graphics card is a AMD Radeon RX 570 Series. Looks like this I switched from Wayland to xorg, no change.
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The fact that you've swapped cables and ports with no success poitns to a software rather than hardware issue; since it works fine on Windows, I'd suspect a driver issue. If you haven't already done so, start by installing the AMD proprietary driver.
It would also be worth verifying your refresh rate on the monitor and possibly trying various rates, you can find this in the monitor settings or using xrandr.
Also it's a bit long-shot, but you could (with the computer unplugged) just verify that the GPU is properly seated into the MB.
anonymous2
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Finally found a solution. A Weird one, but basically, I replaced the monitor with a newer one, and it works fine. I used the exact same HDMI cable and port on the graphics card and it just worked immediately. Again, that older monitor worked fine on Windows, so I still think it's driver related, but at least now I'm back to having 3 monitors.
Kiristo
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