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.

  • codebam@lemmy.caEnglish
    2·
    1 year ago

    I have the same CPU and GPU.

    Adaptive sync issues were fixed by kernel 6.4 for me. Before that the display would flicker and timeout every 10 minutes or so. There’s another issue caused by 6.4 where the VRAM doesn’t clock up though. Can be fixed by switching the refresh rate when a load is on the GPU. It’s been a rough time using this GPU with Linux.

    Try 6.4 and see if it fixes your display issues. I’m using the release candidate kernel on silverblue rawhide.