High CPU usage with latest driver

[cloudboy]

Same issue here. top is showing displaylinkmanager proccess over 100% at times.

[LongtimeUser4]

I recently switched to a new work laptop that requires a (Dell) DisplayLink dock and am also seeing this issue.

The OP reported this issue more than 2 and a half years old, is there no update at all on this situation?

[hozertech]

I am using a Dell D3100 dock with an XPS13 9365 and currently have 3 screens attached, 1 @ 3440x1440 and 2 @ 1920x1080, with the laptop screen disabled and am running KUbuntu 19.04.
kWin_x11 will use 20 to 40% CPU when connected to the dock and DisplayLinkManager will use 20 to 50% CPU only when there is movement on a screen (video or mouse mainly).
i have tried two screens, and 1 screen as well as set the laptop screen as primary with no difference, these processes use a tone of CPU as long as the dock is connected. if i disconnect the dock completely kWin drops to 1% or less CPU usage and of course displaylink is no longer needed at that point.
I have also tried Cinnamon desktop over KDE Plasma and at least there i only have to deal with DisplayLink using ton of CPU...

output of DL Linux Support Tool is attached

[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.

[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 :-(