System spec - Ryzen 3700X CPU - AMD RX 7900 XT GPU
I got an AMD GPU specifically because I wanted to switch to Linux. I’ve done a bunch of testing over the last year while I still had an nVidia card. Now I’ve got an AMD GPU I feel ready but it has not gone well.
When I use multiple monitors I get a range of odd behaviours, including a white screen, lock ups, failure to display anything on second screen. I’ve unplugged the second screen for now and all is OK except that adaptive sync does not work properly.
When I set adaptive sync to “Always” in the settings the screen sort of flickers when I move the mouse. To be more precise the screen gets a bit brighter when the mouse is moved, then returns to previous slightly dimmer brightness when the mouse is stopped. There are no errors that I’ve found.
Both of those issues happen in fresh Fedora 38 and Arch Linux installs. I’m running KDE-plasma (using Wayland not X) so it seems like a KDE issue. Though I’m about to test it with a Fedora and gnome install next, though I doubt it will be any different.
I have an AMD 5600H and I’m using dual screen (dell 24 1920x1200 and dell 22 1920x1080) and MX Linux 21.3 AHS Xfce, and never ever had a problem with displays. I even sometimes add a 3rd screen on USBC (a small 1024x600) and everything works fine.
Yeah I’ve got a 4k120 that I use as my main and for gaming, plus a USB-C monitor on the side. No issue with my AMD output