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Old 01-21-2023, 01:20 PM   #1
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Join Date: Jun 2022
Posts: 4
Default Installing Displaylink drivers on Ubuntu 22.04 breaks gdm3/Xserver

Originally installing the DisplayLink drivers worked fine.

After some time of using it suddenly (supposedly after some unattended upgrade), Ubuntu would boot into a blinking _ and not start the GUI.

After some debugging, I figured out:
* the issue exists independent of whether displaylink display is attached or not
* the issue only exists when displaylink drivers are installed
* the computer boots as expected when they are uninstalled
* the issue persists independent of the window manager gdm3 and lightdm won't start
* the issue exists for 5.5, 5.6 and 5.6.1 of the displaylink drivers
* the issue exists for both Xserver and Wayland, i.e. changing WaylandEnable=false in /etc/gdm3/custom.conf

Ubuntu 22.04 with 5.15.0-58-generic, Thinkpad laptop with and ryzen 4000 series and gpu

I attached a lot of logs and the output from the debug info tool while having set lightdm as the window manager.
Journalctl shows lightdm.service and gpu-manager.service crashing.
I attached the logs of them.
Attached Files
File Type: zip DLSupportTool_Output_2023-01-21T15:10:09.562434.zip (35.8 KB, 0 views)
File Type: zip logs.zip (18.8 KB, 0 views)
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Old 01-28-2023, 01:50 PM   #2
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Join Date: Jun 2022
Posts: 4
Thumbs up Solved

Due to a coincidence I had some problems with the AMD driver leading to me changing the installed mesa version from 23 to 22. This allowed me to install the dp link driver.

Works now
user_12344321 is offline   Reply With Quote

blackscreen, ubuntu 22.04, window manager

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