https://bugs.kde.org/show_bug.cgi?id=440361
--- Comment #17 from Zamundaaa <xaver.h...@gmail.com> --- > ~/.local/share/sddm/wayland-session.log is empty on my system. Any idea why > or where the log is instead? You're using the systemd boot, probably because Fedora does that by default. Try "journalctl --user | grep kwin_wayland_drm" > "GAMMA_LUT_SIZE" (immutable): range [0, UINT32_MAX] = 262145 > "DEGAMMA_LUT_SIZE" (immutable): range [0, UINT32_MAX] = 33 That's a big and a very small LUT table. Too big and too small respectively. I am fairly certain this is the cause of the bug, those values don't make sense. > I tested a Weston session and it works fine, so probably not a driver bug. Unfortunately that doesn't seem to do the trick. I had a suspicion that Weston only uses legacy functions (which we do with KWIN_DRM_NO_AMS set, too) to set gamma, but it turns out that it doesn't set gamma at all. Could you try another wayland compositor that does set gamma? A live usb with the latest GNOME or Sway should do it. -- You are receiving this mail because: You are watching all bug changes.