Horizontal artifacts when refreshing

[DLUser97]

Made an account just to post here that I am also experiencing the same issue.

The youtube video in the previous reply by natewiebe13 is exactly what I am experiencing on a machine running a fresh install of Ubuntu 24.04 and latest displaylink-driver provided from the synaptics website and followed the instructions to a tea. Horizontal artifacts when sections of the screen refreshes.

I can confirm that my dock and USB cable are not the problem since this works completely fine on a separate machine running Ubuntu 22.04 & displaylink-driver 6.1.1-17. This seems to be an issue related to Ubuntu 24 and how the driver interacts with that version exclusively.

I've scoured evdi issues and source code on github trying to find the problem to no avail. I believe the issue is within the driver proprietary code that is under lock and key.

If you need more information, I'm subscribed to this thread and eager to reply to get it resolved. Please help!

[René Nieuwenhuizen]

Hi,

I'm running Ubuntu 24.04.3 LTS with displaylink-driver-6.2.0-30 on an HP ZBook Ultra G1a. With every USB-C docking station with DisplayLink tech inside I get small horizontal glitches when moving windows around. Small movements will eventualy resolve this but scrolling in a browser is horrific. When using an docking station with USB-C alt-mode support all is fine and crispy.



What has to be done to fix this?

[Szymon]

Hello René,

It appears like an EVDI issue that we currently investigate and it is discussed in github:
https://github.com/DisplayLink/evdi/issues/524

Regards,
Szymon