https://bugs.freedesktop.org/show_bug.cgi?id=107898
--- Comment #2 from Felix Kuehling felix.kuehling@amd.com --- The AMD-Vi messages in the log look OK. I'm seeing the same on my Raven system (Ryzen 5 2400G desktop).
I'm currently running a 4.19-rc1+ kernel from Alex Deucher's drm-next-4.20-wip branch. I haven't tried rc3 from the master branch yet. I'll try it tonight and see if I can reproduce the issue.