The i915kms kernel module is not in /boot/modules, so I tried to install it and and I got the message below. 

 

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pkg: No packages available to install matching 'drm-510-kmod-5.10.163_1' have been found in the repositories

[admin@eisy ~]$ 

 

I believe the latest package for FreeBSD 13 is drm-510-kmod-5.10.163_2, I'll give that a try.

 

This is a screenshot after I ran sudo kldload i915kms, the text does get smaller and displays some messages before the HDMI signal is lost. 

Try restarting and then run the sudo kldload i915kms from a ssh session.  If you can do so while the display is attached to the eisy and on, that would be best.

What's showing on the screen looks correct so the driver does seem to load properly.  It's just when it tries to detect the display that something goes wrong.

I did what you said and the exact same messages appear before the screen goes black.

I guess there is no solution to this problem and I say the HDMI hardware is defective.  I will open a service ticket and go from there.

Thanks for all the help.

@Joe Casullo Keep us updated on what happens. Would be interesting to see if there's a software/firmware/driver fix or if you have a device issue. 

I opened a ticket and they said I just need a BIOS update, I’ll let you know. 

Fixed the HDMI issue, I opened a ticked and Michel said I needed a BIOS update.  Did the BIOS update and now my HDMI ports work and I can get the the desktop.

Thanks all.