- Dec 15, 2010
- Gigabyte Z390 Aorus Master
- HD 630HD + Radeon VII
This may be coming from 10.15.4 itself when multiple monitors are attached. As an experiment, please try connecting the two monitors directly to the AMD GPU.
Yes, write it off!
Here's what I get directly out of GPU. No problem getting 60hz. Another interesting observation- If I boot with the 4K monitor hooked up to the dock, the computer will not post giving me 4 beeps. So it appears the patched firmware is preventing the monitor from being detected at boot. Unpatched, computer will post to the 4K monitor hooked up to the dock and I can enter the bios from it.