Comment # 6 on bug 1176121 from Daniel Wagner

Mainline 5.8.4 works. The boot hanged for a while and it seems
it's due to drm:

> [    4.968135] input: Logitech USB Laser Mouse as /devices/pci0000:00/0000:00:01.3/0000:03:00.0/usb1/1-2/1-2.3/1-2.3:1.0/0003:046D:C069.0003/input/input2
> [    4.968200] hid-generic 0003:046D:C069.0003: input,hidraw2: USB HID v1.10 Mouse [Logitech USB Laser Mouse] on usb-0000:03:00.0-2.3/input0
> [   23.328333] [drm:atom_op_jump [amdgpu]] *ERROR* atombios stuck in loop for more than 20secs aborting
> [   23.328447] [drm:amdgpu_atom_execute_table_locked [amdgpu]] *ERROR* atombios stuck executing BF72 (len 62, WS 0, PS 0) @ 0xBF8E