(In reply to Jaap Buurman from comment #79)
> I am also running into the same issue. I have two questions that might help
> tracking down why we are having issues, but not all people that are running
> a Vega graphics card.

As you can see from my initial description, I'm running an RX460, which uses
not a "Vega", but a "Polaris 11" AMD GPU.

> What is the output of the following command for you guys?
> 
> cat /sys/class/drm/card0/device/vbios_version 

"113-BAFFIN_PRO_1606"

I have not heard of any update to this from the vendor - there is just some
unofficial hacked version around (which I do not use) that is said to enable
some switched-off CUs.

> Memory clocking is different for people running multiple monitors. Are you
> guys also running multiple monitors by any chance?

No, I'm using just one 3840x2160 @ 60Hz HDMI display.