Proxmox unreachable if hdmi is not connected

alessandro berta

New Member
Aug 23, 2023
Hi everyone. I took a minipc and installed proxmox.

I'll make it short, a thousand installations, it doesn't ping, it doesn't connect, nothing to do. Everything is fine then the detachment from the mouse / keyboard / monitor, I turn it on and he is no longer reachable.

By chance I realize that it can only be reached if the monitor is on.

Seems strange to me, but that's how it is.

If I turn off the monitor (it is connected to the hdmi of a television) then if I turn off the television it crashes, if I turn the television back on the hdmi is no longer active... and I can't do anything but restart.

After several tests it seems that when it starts (even without hdmi connected) it stays active for a few seconds (30/60) and then crashes if it doesn't find a monitor connected and turned on.

What can I do?
Did you check the settings of your UEFI? Maybe disabling some powersaving stuff might help? CEC is disabled?


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