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Old 02-01-2024, 10:03 PM   #1
jbodnar
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Join Date: Feb 2024
Posts: 1
Default Start DisplayLink before Login (lightdm)

I'm using Ubuntu Cinnamon (Ubuntu 23.10) with Lightdm. I've installed the DisplayLink Debian package and my two external monitors work just fine. They are plugged into a Dell docking station which is connected to my laptop via USB-C. But they only work after I login. The Lightdm login screen is only shown on the laptop display (which I keep closed).

I tried editing /lib/systemd/system/displaylink-driver.service to change:

Code:
After=display-manager.service
to

Code:
Before=display-manager.service
but that did not work.

I've also tried various tricks with xrandr and monitors.xml as described for Ubuntu and Lightdm but they didn't work either. My guess is that the external monitors aren't available until after DisplayLink runs and that's happening after the login screen is displayed. Is it possible to get a login screen displayed on external monitors that are made available via DisplayLink?
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lightdm, login screen, ubuntu

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