Nvidia card sleeps

[Morta]

Hi!

I have a KVM Switch with 4 Ports on one is the OPNsense router with NVIDIA grahpic cards.
So I have the issue that the HDMI port sleep and doesn't wake up even I switch the KVM port with the keyboard.

So it's a FreeBSD/OPNsense or a graphic card issue (particullary broken)?

How I can fix that?

[defaultuserfoo]

It is possible for NVIDIA cards to disable their output when the monitor is being disconnected, at least with Linux.  The only way I found to get a picture again is to reboot.

There is software on Linux that may re-enable an output of the graphics card, but I never bothered to try to figure it out because there is not much point when there is no image (unless you try remotely, perhaps).  If there is such software for FreeBSD, perhaps you can come with up something that makes it easy enough to re-enable the outputs (don't expect the names of the outputs to be persistent) that you can do it blindly ...

(I recently switched from NVIDIA cards to AMD because NVIDIA sucks with Linux, and so far, I'm glad I did that, and there's no looking back.  That is not to say that AMD cards don't disable their outputs: I don't know if they do.)