Port Replicator With DisplayLink

jmp_0x80

New Member
Oct 8, 2022
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Hi all, first post here!

I'm wondering if anyone has had any success with getting the DisplayLink drivers to work with the 5.16 PVE kernel. They are designed for Ubuntu, but since ubuntu is based on Debian, I would have expected them to work.

I am able to successfully build the required modules, and can modprobe for evdi and udl, however, no framebuffer devices are created in /dev/

If I try to use the installer from DisplayLink, it installs a service which causes Proxmox to hang at boot unless removed / disabled.

I have two GPUs in this workstation, both of which are passed through to VMs (Ubuntu and OS X) and was thinking it would be useful if I could use the Displaylink output so I can see the kernel messages from proxmox, rather than the hypervisor being completely headless. I don't want to run an X session, just a framebuffer console would be useful though.

Alternatively, I can just use the serial port and a 232-to-USB cable for that but seems a shame to waste a perfectly good HDMI/DP output on the port replicator when I have spare inputs on my monitors.

The reason I am using an external port replicator is that I have a need for a second gigabit port, as currently running OpenWRT on this machine (my ISPs router can't handle anything above about 80Mbps coming in from the WAN side) and, all of my four PCI slots (3x x16, 1x x4) are occupied with GPUs and PCIE-NVMe cards :)
 
Hi jmp_0x80 and BobhWasatch,

The problem seems to be that the current DisplayLink driver is having issues with ifupdown-pre.service of Proxmox.

Simply mask the service:
systemctl mask ifupdown-pre.service
That should solve the boot delay.
 
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