(In reply to Adrian Garay from comment #12)
> (In reply to matrix8967 from comment #11)
> > This is the exact same issue I had and the above solution for removing
> > /lib/firmware/amdgpu/raven_dmcu.bin worked for me. 
> > 
> > For Ubuntu Users on 4.20 you'll need to also run 
> > 
> > sudo update-initramfs -u
> > 
> > to update the bootimage. Thanks Chris.
> 
> Removing this file and updating my initramfs allows my 2500u HP x360 to
> actually boot to the desktop.  Unfortunately, the moment you try to load any
> game or even the Steam client, the laptop will hard lock.
> 
> The desktop is otherwise functional.

Possibly related to https://bugzilla.redhat.com/show_bug.cgi?id=1562530