Draft: NEEDS HELP surface: linux 6.12.19 -> 6.12.21

[matthiasdotsh]

Description of changes

Starting with linux 6.12.20 kernel bumps are failing.

# Sorry, my nixos config isn't public yet.
sudo nixos-rebuild switch --flake .#surface-pro9 

last lines from nix log /nix/store/dvikj3jr164y07ffrz8j88d81c9f53mh-linux-6.12.21.drv (nothing special before)

  CC [M]  drivers/gpu/drm/amd/amdgpu/../display/modules/hdcp/hdcp_psp.o
  CC [M]  drivers/gpu/drm/amd/amdgpu/../display/modules/hdcp/hdcp.o
  CC [M]  drivers/gpu/drm/amd/amdgpu/../display/modules/hdcp/hdcp1_execution.o
  CC [M]  drivers/gpu/drm/amd/amdgpu/../display/modules/hdcp/hdcp1_transition.o
  CC [M]  drivers/gpu/drm/amd/amdgpu/../display/modules/hdcp/hdcp2_execution.o
  CC [M]  drivers/gpu/drm/amd/amdgpu/../display/modules/hdcp/hdcp2_transition.o
  CC [M]  drivers/gpu/drm/amd/amdgpu/amdgpu_isp.o
  CC [M]  drivers/gpu/drm/amd/amdgpu/isp_v4_1_0.o
  CC [M]  drivers/gpu/drm/amd/amdgpu/isp_v4_1_1.o
  LD [M]  drivers/gpu/drm/amd/amdgpu/amdgpu.o
  AR      drivers/gpu/built-in.a
make[2]: *** [../scripts/Makefile.build:478: drivers] Error 2
make[1]: *** [/build/linux-6.12.21/Makefile:1944: .] Error 2
make: *** [../Makefile:224: __sub-make] Error 2

Could someone who also has a surface please try if it works for him or does someone have an idea how to get more debug infos?

Things done

• [ ] Tested the changes in your own NixOS Configuration
• [ ] Tested the changes end-to-end by using your fork of nixos-hardware and importing it via <nixos-hardware> or Flake input