High CPU usage with latest driver

[hozertech]

after more testing and trying different desktop environments , LXDE is same as KDE as its using x11. GNOME Wayland seems to be pretty good, DisplayLink onliy hits 15% CPU, standard GNOME without Wayland it hits nearly 60% at times.

problem is, i dont care for GNOME and with Wayland my mouse cursor seems to stutter or get stuck quite a bit...

[ubuntu-user]

I have the same problem!
The problem is really annoying and the system load so high that it is hardly usable, please fix this!

- Lenovo ThinkPad T480s
- Intel i915 chipset
- Ubuntu 18.04.3 LTS
- Kernel 5.0.0-31-generic
- Displaylink driver 5.2

[rick_pri]

I think that this is causing issues in Gnome under X on Ubuntu 19.10 as I'm getting occasional hangs and am getting kicked out of Gnome, followed by X freezing, an inability to get to the consoles and the only resolution is pressing the power button to start the shutdown process or REISUB.

The CPU usage under X is 200%. Unfortunately I can't use Gnome under Wayland either as it crashes (when trying to edit the screen layout) so that's not a workaround for me.

[nabab]

I too have this problem with 19.10 and drivers 5.2.
This issue makes docking stations unusable with Ubuntu and my latest XPS 13. I tried different dock models and found myself stuck each time with this high CPU problem,
With Wayland I get a crash as soon as I change any display setting, otherwise it works but slowly because of the ridiculous CPU load.

[q-wertz]

Same here with Lenovo ThinkPad L580 and ThinkPad USB-C dockingstation.

Ubuntu 19.10
Displaylink Version 5.2
Displaylinkmanager 210% CPU load

[rick_pri]

Originally Posted by nabab

I too have this problem with 19.10 and drivers 5.2.
This issue makes docking stations unusable with Ubuntu and my latest XPS 13. I tried different dock models and found myself stuck each time with this high CPU problem,
With Wayland I get a crash as soon as I change any display setting, otherwise it works but slowly because of the ridiculous CPU load.

Yes this is my experience, that Wayland crashes if you try to change anything in the display settings. It's slow and laggy in X too and every so often X will crash requiring the previously noted interventions.

[more]

Same here with Lenovo ThinkPad T490 and ThinkPad USB-C dockingstation.

Ubuntu 18.04

DisplayLink Ubuntu Software
Build: 5.2.14 (5447f8a)
Date: 18th June 2019

CPU load of over 50% for all 8 cores/threads

Do contact me if you need more info.

lsusb
Bus 002 Device 015: ID 17e9:6015 DisplayLink

[richardfearn]

The issue where changing display settings causes the Wayland session to hang has been seen on Fedora too: https://github.com/displaylink-rpm/d...rpm/issues/112

[poecile]

I also have this issue.
Xubuntu 18.04
Kernel Version: 5.3.0-26-generic
DisplayLink Version: 5.2.14
I use an NVIDIA GT 650M with nouveau

Processor load of DisplayLinkManager process (with one 2560x1440 60Hz monitor connected) reaches 14% to 40%, when moving mouse it reaches around 200% in sum. Load is similarly disastrous when watching videos. I used htop to look at load. I have 2 cores and 4 threads so this impacts cpu performance immensely!

Is this supposed to be normal behavior or can we expect a fix?

[magnus]

Hello,

I also have huge CPU usage making the laptop unusable -- when stuff moves on the screen.

My setup:
- Dell XPS 13
- linux
- gnome
- X
- latest displaylink software
- i-tec USB 3.0 / USB-C Dual 4K Dock


Is there anybody from DisplayLink who could eventually give some hint on this issue that seems to annoy several users ?

I will have to sell my docking station if no solution are provided :-(