I am using your system (currently zorin 16 pro) for some time and like it a lot. But after last update (about a week ago), I can not longer switch between x server/wayland on login screen (missing cogwheel icon), in display settings I can not change resolution (default fullHD is set), and what is worst, my external monitor (old fullHD LG monitor) connected via hdmi stops working. I have MSI bravo 15 notebook with AMD Ryzen 7 5800h processor and Radeon RX 5500M graphic card. Thanks to timeshift I was able to undo last update, but I can not update my computer anymore until I find solution. Also, changing kernel to different version changes nothing (I even tried to install latest kernel from kernel.org). I tried some advices from little bit similar topic (https://forum.zorin.com/t/monitor-refreshes-when-playing-video-skipping-etc/14627).
Update of "graphics-drivers" installed something, but did not resolve my issues.
"quiet splash amd_iommu=on iommu=pt"
"quiet splash amd_iommu=off iommu=pt"
also does not help.
showed my following:
Device-1: AMD Navi 14 [Radeon RX 5500/5500M / Pro 5500M]
vendor: Micro-Star MSI driver: N/A bus ID: 03:00.0 chip ID: 1002:7340
Device-2: AMD vendor: Micro-Star MSI driver: N/A bus ID: 07:00.0
chip ID: 1002:1638
Display: x11 server: X.Org 1.20.13 driver: ati,fbdev
unloaded: amdgpu,modesetting,radeon,vesa compositor: gnome-shell
OpenGL: renderer: llvmpipe (LLVM 13.0.0 256 bits)
v: 4.5 Mesa 22.0.0-devel (git-8599ded 2022-01-29 focal-oibaf-ppa)
direct render: Yes
In setting -> about is graphic as
llvmpipe (LLVM 13.0.0, 256 bits)
So for some reason, amdgpu driver is not loading.
Unfortunately, I have little to none knowledge on this subject. Any suggestions?