Thanks for the bug report. Please try logging into Wayland instead. There is a menu in the corner of the login screen where you can select Ubuntu (which is Wayland) or Ubuntu on Xorg.
Also it looks like your kernel driver amdgpu/6.2.4-1683306.22.04 did not come from Ubuntu so please also try uninstalling that driver (which presumably came from AMD?). ** Summary changed: - two monitors have night light, one does not + [amdgpu] Two monitors have night light, one does not ** Package changed: xorg (Ubuntu) => xserver-xorg-video-amdgpu (Ubuntu) ** Changed in: xserver-xorg-video-amdgpu (Ubuntu) Status: New => Incomplete ** Tags added: amdgpu gamma nightlight -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/2045196 Title: [amdgpu] Two monitors have night light, one does not To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/2045196/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp