High CPU usage with latest driver

Keith Dart · 09-23-2019, 10:23 PM

The number of pipes it has open is enormous. Clearly buggy.

cloudboy · 09-27-2019, 08:38 AM

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

LongtimeUser4 · 10-11-2019, 09:57 AM

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 · 10-21-2019, 04:32 PM

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 · 10-21-2019, 10:36 PM

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 · 10-22-2019, 09:57 AM

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 · 11-05-2019, 09:05 AM

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.

poecile · 01-18-2020, 07:33 AM

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?

09-23-2019, 10:23 PM	#1
Keith Dart Junior Member Join Date: Sep 2019 Posts: 1	Having the same problem - more info The number of pipes it has open is enormous. Clearly buggy.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

09-27-2019, 08:38 AM	#2
cloudboy Junior Member Join Date: Sep 2019 Posts: 1	Same issue here. top is showing displaylinkmanager proccess over 100% at times.

10-11-2019, 09:57 AM	#3
LongtimeUser4 Junior Member Join Date: Oct 2019 Posts: 1	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?

10-21-2019, 10:36 PM	#5
hozertech Junior Member Join Date: Oct 2019 Posts: 2	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...

11-05-2019, 09:05 AM	#7
rick_pri Junior Member Join Date: May 2019 Posts: 9	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.

01-18-2020, 07:33 AM	#8
poecile Junior Member Join Date: Jan 2020 Posts: 1	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?