I recently acuired a secondhand NUC8I5BEH and installed proxmox on it. But it randomly is unreachable from my LAN. There are no errors in syslog. When I connect a monitor there is no signal. So the NUC seems crashed. The fan is spinning and the LAN lights are on. It’s not viewable on my unifi controller and it’s not pingable. Where can I start looking for the problem?

  • @BitswapEnglish
    9•16 days ago

    Try adding a HDMI dummy plug. Older Intel NUC’s (8th gen and earlier) have an issue that’s fixed (but always seems to come back…) where they don’t like functioning headlessly (without a display connected.)

    Edit: Also, make sure your BIOS is uptodate.

    • GuadinOP
      2•16 days ago

      Hmm, this does sound like it makes sense. I got the feeling that as soon as I removed the monitor it would stop working in a couple of minutes. But I thought that couldn’t be. Thanks for the tip! Going to see if that helps and I’m going to update the BIOS.