This bug looks similar to #1094206 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1094206 that I posted last week.
The problem appears to be amdgpu driver module is missing symbols. Example: $ insmod /usr/lib/modules/6.12.10-amd64/kernel/drivers/gpu/drm/amd/amdgpu/amdgpu.ko.xz gives: insmod: ERROR: could not insert module /usr/lib/modules/6.12.10-amd64/kernel/drivers/gpu/drm/amd/amdgpu/amdgpu.ko.xz: Unknown symbol in module -- Peter (A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B)
