Displaylink boot in Ubuntu 18.04
 

Hello everyone, i need help with Ubuntu 18.04 boot and DisplayLink drivers.

I have successfully installed the DisplayLink drivers but my monitor does not connect properly at startup in Ubuntu 18.04. If I unplug and plug the usb cable back in, it works!

Has someone some solution for thie issue?

Kernel: 5.4.0-42-generic #46~18.04.1-Ubuntu SMP Fri Jul 10 07:21:24 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Driver version: DisplayLink Linux Software 5.3.1.34
Dkms evdi: evdi, 1.7.0, 5.4.0-42-generic, x86_64: installed
lsusb: Bus 004 Device 003: ID 17e9:4300 DisplayLink

Same problem here
 

Sad to see this on the second page since Aug without a reply.

I downgraded from Mint 20 to 19.3 to avoid the issues and my dock works when plugged in hot but blank screens on reboot. I'm actively trying to fix it but no luck so far.

Xsetup
 

The issue is because the way the displays are handled is different from the login screen and after login.

In my case the login screen setup is done by sddm (LXqt) and I ended up editing the startup file /usr/share/sddm/scripts/Xsetup to add xrandr commands to activate the display. I your case Ubuntu or other distro may have a different configuration.