I've been using my 15-year old hardware (Core 2 Duo E4500) as an OMV server for a few years now (OMV 4, 5, 6). This CPU doesnt have integrated graphics, so I've been using a separate graphics card for installing OMV (Nvidia 8600GT at first, Radeon X300 later on). Whenever the installation via a monitor had been done, I shut the server down, removed the card for power consumption and noise reduction purposes, started it again, and from then on controlled it only over OMV web interface and PuTTy. However with a fresh install of OMV 6 (my first time using it), I don't seem to be able to do it the same way anymore. Whenever I try to start the server with my graphics card out, I'm getting "Software Failure" on web interface, "Network error: connection timed out" on PuTTy and my qbittorrent client is unreachable as well. I have tried doing it multiple times with the same result.
Am I missing something here or is it intended to work this way in OMV 6?
This is important to me as if I can't solve the problem, I will have to change my server's hardware configuration. Thank you for your time and I love the new OMV 6 control panel and functionality by the way.