DisplayLinkManager high CPU usage (Ubuntu 18.04)

[razcakappa]

Originally Posted by madscientist

OK I configured my system as described in these two FAQ links:

https://support.displaylink.com/know...hen-displaylin

and:

https://support.displaylink.com/know...plication-only

Note that (a) I don't have an NVIDIA card, and (b) I'm using Ubuntu 18.04 while the latter FAQ entry says the screen freeze was in Ubuntu 17.10 and fixed in 18.04. Indeed I didn't have the screen freeze problem but that fix also appears to solve the flickering mouse issue.

Anyway, after rebooting with the above two changes, Slack no longer causes DisplayLinkManager to chew up my CPU like it did before.

I have not fully tested things but I'm hopeful things work now.

Thank you very much for posting the findings. I'm also using DisplayLink device with ElementaryOS (Ubuntu Xenial based release) installed on a Macbook Air, and faced to the same issue set.
And noticed the miracle when killing the Slack and the CPU clams down.

Also followed the FAQ solutions and AFAIK the issue is gone for good. Lets see on future.