Lenovo Legion 5 Pro 16ach6h breaks when using modesetting with current config

[4JX]

Opening this up to see how to go about fixing it.

The commit 630a8e3 switched the default AMD driver from amdgpu to modesetting. When updating past this commit Xorg does not boot up correctly on my machine in hybrid/offload mode: https://gist.github.com/4JX/37d35bf95970f96ad341658da7af0ecd, with the Xorg config that is created being https://gist.github.com/4JX/ec3b37198fdc5900ac258ca99ce0e068.

If I manually remove the layout/device/screen referencing amdgpu (Created due to the presence of hardware.nvidia.prime.amdgpuBusId. Where any duplicate entries for drivers, from both amdgpu or modesetting, that will eventually end up controlling the iGPU trigger this issue if at least one of them uses the modesetting driver.) and move the BusID to the modesetting section (not necessary, there for redundancy) it boots up just fine.

I'm not sure if a proper fix would be to just tell it to use the amdgpu driver for my device, as it seems that the NixOS option is also to blame (it only considers modesetting for intel cards despite the move towards ditching the other drivers NixOS/nixpkgs#218437).

[nixos-discourse]

This issue has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/fetchurl-or-similar-as-a-way-of-getting-an-alert-if-something-changes-upstream/28726/3