https://bugs.freedesktop.org/show_bug.cgi?id=99857
--- Comment #9 from Andrey Grodzovsky andrey.grodzovsky@amd.com --- What i meant is i looked at the dmesg which was already attached to the ticket. Anyway, as I said, even 4.15 is a bit old, so I would advise to give a try to latest kernel. And if the problem is still there obviously attach dmesg.