Ubuntu 17.10 with DisplayLink 1.4 - Laggy mouse, CPU usage dependent

tomekit · 10-23-2017, 06:18 AM

First, I would like to thank you the DisplayLink for keeping up good work. Each release the DisplayLink on Linux is getting better. The quality of those drivers is still far away from their respective Windows version, but I think overall direction is good. Good luck

The problem I am having is really laggy mouse on the screen connected via DisplayLink USB. The lag is hugely dependent on the CPU usage on the laptop.
If laptop is idle, then the lag is visible, but it's still possible to work.
When CPU gets closer to 100% CPU, the screen gets unusable, it reminds me playing video games having 5-6FPS

I've got fresh Ubuntu 17.10 (default GNOME) with kernel: 4.13.0-16-generic on Asus Zenbook UX330-UA with i5-7200U.

Previously I've had Ubuntu 17.04, with 4.12 kernel (custom) and DisplayLink 1.3.54. There was no mouse lag, however the was a mouse/screen flicker on different screens.
Currently I can't see any flicker at all, which was never a case before !

However the lag is present.

Linux support tool output: https://www.dropbox.com/s/skxpmgf4j7...77849.zip?dl=0

10-23-2017, 06:18 AM	#1
tomekit Junior Member Join Date: Sep 2017 Posts: 4	Ubuntu 17.10 with DisplayLink 1.4 - Deadly slow and CPU usage dependent First, I would like to thank you the DisplayLink for keeping up good work. Each release the DisplayLink on Linux is getting better. The quality of those drivers is still far away from their respective Windows version, but I think overall direction is good. Good luck The problem I am having is really laggy mouse on the screen connected via DisplayLink USB. The lag is hugely dependent on the CPU usage on the laptop. If laptop is idle, then the lag is visible, but it's still possible to work. When CPU gets closer to 100% CPU, the screen gets unusable, it reminds me playing video games having 5-6FPS I've got fresh Ubuntu 17.10 (default GNOME) with kernel: 4.13.0-16-generic on Asus Zenbook UX330-UA with i5-7200U. Previously I've had Ubuntu 17.04, with 4.12 kernel (custom) and DisplayLink 1.3.54. There was no mouse lag, however the was a mouse/screen flicker on different screens. Currently I can't see any flicker at all, which was never a case before ! However the lag is present. Linux support tool output: https://www.dropbox.com/s/skxpmgf4j7...77849.zip?dl=0 Last edited by tomekit; 10-26-2017 at 07:44 PM.