1) 5.13.0-5 with standard kernel params but without "amdgpu.ip_block_mask=0xfffffdff"
=> black screen & system freeze during boot (cannot ssh)
2) 5.13.0-5 with "blacklist=amdgpu modprobe.blacklist=amdgpu" then ssh and modprobe amdgpu
=> black screen & system freeze ... but some errors got caught in journal, attached
This kernel did not help I'm affraid.
1) 5.13.0-5 with standard kernel params but without "amdgpu. ip_block_ mask=0xfffffdff "
=> black screen & system freeze during boot (cannot ssh)
2) 5.13.0-5 with "blacklist=amdgpu modprobe. blacklist= amdgpu" then ssh and modprobe amdgpu
=> black screen & system freeze ... but some errors got caught in journal, attached