https://bugzilla.kernel.org/show_bug.cgi?id=22312

--- Comment #6 from Alex Deucher alexdeucher@gmail.com --- (In reply to Dnitry from comment #5)

Created attachment 118051 [details] uname -a, lspci -v -s 01:00.0, dmesg

Yes, I still have this issue. It doesn't manifest itself. Everything works fine except glamor is sometimes slow. But this doesn't concern the bug.

You can ignore that warning in your case because the driver is able to find the vbios eventually. The driver tried multiple methods to detect the rom depending on the system.