On Sat, Aug 03, 2019 at 01:35:55PM +0000, bugzilla-daemon@freedesktop.org
wrote:
> [    5.759204] amdgpu 0000:0a:00.0: Direct firmware load for
> amdgpu/vega20_ta.bin failed with error -2
> [    5.759205] amdgpu 0000:0a:00.0: psp v11.0: Failed to load firmware
> "amdgpu/vega20_ta.bin"

Did you get the latest and "greatest" amdgpu firmware package?