PVE working fine but no local console video output

[m3ei]

PVE 8.0.3 installed and is working successfully. Host is a Dell Optiplex Tower Plus 7010, with Intel i7-13700 CPU. There is no discrete graphics, it's using the IGPU only. This machine has 3 full size DisplayPort video outputs, no other video output type is available. I've connected an old VGA monitor to one of the DisplayPorts using a DP to VGA adapter.
This worked well enough with the default Win11 Pro the machine came with. However, when installing Proxmox I had to use the advanced options...nomodeset to get video to complete the installation. Otherwise the screen goes and stays black.
While booting after installation, Proxmox initially displays the normal text mode messages. However, after those finish the screen goes black and there is no video output. Normally I would expect a text mode console.
Proxmox is working as expected, I can connect to the web management console from another computer.
I've tried connecting the video cable to each of the 3 DP outputs on the computer but they all have this issue.

 

[xaras2]

some here

 

[m3ei]

I tested again after updating to 8.3.2. Same issue with the DP to VGA adapter cable.
However, I was able to test using a DP monitor and cable. Post-boot console displays output as expected.
Configuration that does NOT work:

• Benfei 000106 / 2724571568179 DP to VGA adapter cable
• Old Dell monitor (circa 2006)

With the adapter cable I also tried the "nomodeset" GRUB boot option per https://medium.com/@mithun.rosinth/home-lab-1-proxmox-setup-2c42a3e15094 , which did not help. In hindsight this system appears to boot using systemd-boot rather than GRUB so the change in the article may not apply. Anyone have an idea of how to apply a similar option for systemd-boot ?