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Old 03-06-2017, 10:12 AM   #1
Conassa
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Default High CPU usage with latest driver

I'm running Debian 8.7 with Intel HD4000, the latest drivers and a Asus MB169+ screen.

With the screen on, DisplayLinkManager is using constantly 15% of one of my logical cores just idling.
If I start to drag windows or do some work in my normal (non-DisplayLink) screen, it jumps to 20-30%.
Dragging a window on the DisplayLink monitor makes it jump to 75%.
Watching a movie on YouTube in Chrome I get 140% cpu usage just from DisplayLinkManager!
Turning off the screen makes DisplayLinkManager drop down to 0%, as expected.

Is this a problem with my setup or is it normal? I'm using the openbox window manager with compton as a compositor. Killing compton doesn't seem to make a difference.

Last edited by Conassa; 03-06-2017 at 12:45 PM.
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Old 03-06-2017, 10:58 AM   #2
fastfire
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Same problem for me too. My environmente is: XPS 13 with Intel i7 7th Gen, Ubuntu 16.04, Dell Docking Station D3100, DisplayLink driver version 1.3.52. Also point out the presence, at a time when the process DisplayLInk loads the cpu high, of an annoying lag in the display on the monitor connected to HDMI outputs.
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Old 03-06-2017, 04:22 PM   #3
malidlkan
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Same problem with two external monitors on ACER Aspire v3-371 notebook running Ubuntu 14.04 LTS (up-to-date) and the newest available DisplayLink driver.

My workaround at the moment: I connect one monitor with the HDMI port of the notebook and the second monitor with the HDMI port of the docking station. The CPU usage drops down and seems to run constantly on 16%!
Sadly I run into the "mouse flickering" problem, which is also a known bug/problem. So on the monitor connected to the internal notebook HDMI port has got problems to display the mouse cursor.
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Old 08-30-2019, 11:06 AM   #4
Roman Pletka
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Default High CPU usage with latest driver 5.2.14 on Linux

Same problem here with latest driver 5.2.14 on Kubuntu 19.04.
I am using two external screens (attached to a ThinkPad Hybrid USB-C with USB-A Dock using HDMI.
Simply doing nothing CPU usage is at 15-40%, when moving the mouse it jumps to 200-240%.
That's unacceptable!
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Old 09-03-2019, 03:44 PM   #5
stijnos
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I can confirm this verry annoying bug on Ubuntu 19.04 with the latest DisplayLink drivers installed. We have HUNDREDS of these docks (ThinkPad docks) in our organization... Fortunately not everyone is using Linux, but about 50 people are doing so. All suffering from this bug. Quite unacceptable. Go Fix Displaylink!
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Old 09-23-2019, 11:23 PM   #6
Keith Dart
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Default Having the same problem - more info

The number of pipes it has open is enormous. Clearly buggy.
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Old 09-27-2019, 09:38 AM   #7
cloudboy
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Same issue here. top is showing displaylinkmanager proccess over 100% at times.
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Old 10-11-2019, 10:57 AM   #8
LongtimeUser4
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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?
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Old 10-21-2019, 05:32 PM   #9
hozertech
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Default XPS13 and D3100 Dock, Same issue

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
Attached Files
File Type: zip DLSupportTool_Output_2019-10-21T08:58:47.081571.zip (1.05 MB, 0 views)
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Old 10-21-2019, 11:36 PM   #10
hozertech
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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...
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