V620 working setups

I am trying to setup a V620 as an LLM on a dedicated box (Minisforum X1-255 64gb with a DEG1 dock -  AMD Ryzen 7 255/Radeon 780M). I have the V620 wired with a shroud and twin fans for cooling.

Am running Ubuntu 24.04.4 LTS (GNU/Linux 6.8.0-110-generic x86_64).

Boots fine with DEG1/V620 off. Fails to boot with it on. Just hangs/no IP.

Anybody with a similar setup have it running? If so, any particular tips on what to fix?

Alternatively, anyone with similar hardware running another OS? Mine is a dedicated LLM and I am just setting it up so if the path is easier with another setup that's not a problem.

Thanks