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I have a problem with displaylink driver on Ubuntu. Whenever I turn on my PC (cold boot doesn't change anything) if the display link hub is plugged in, Ubuntu just shows a black screen instead of the login screen. I have to turn off my laptop and start it without displaylink and then plug it in after I login. There are other weird issues with displaylink like laptop freezing if I disconnect screen and freezing if when laptop is restarted. Laptop: Acer Nitro 5 CPU: Ryzen 5800H GPU: Nvidia 3070M

Milos Zivkovic
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1 Answers1

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As per my comment on this question, I experienced a similar situation. I changed my display manager from gdm3 to Lightdm, with help from this askubuntu link, and this fixed my problem.

Edit: I am deleting my comment and moving it into my answer:

I'm the same. Using Ubuntu 20.04 LTS and a Dell DisplayLink. My PC has one monitor connected to the graphics card and there are two monitors connected to the DisplayLInk via USB. All three monitors work as expected once I have booted up. When I start the PC up, after a power down, the monitor connected to the graphics card is a complete screen of purple. The two monitors connected to the DisplayLink are both black - but I can see the mouse on all 3 screens. On the purple screen I would expect to see the Ubuntu login prompt. It is present because because I can log in by hitting Enter and P/W

Leachoid
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