DisplayLink Forum - High CPU load (D3100 Ubuntu 15.04)

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DisplayLink Forum (https://displaylink.org/forum/index.php)

- Linux and Open Source (https://displaylink.org/forum/forumdisplay.php?f=29)

- - High CPU load (D3100 Ubuntu 15.04) (https://displaylink.org/forum/showthread.php?t=64039)

trepseq

08-24-2016 11:41 AM

Using XFCE solves the problem. Seems that it's caused by compiz when using Unity.

trepseq

08-24-2016 01:31 PM

Unity NOT supported

Running

Code:

metacity --replace

gets rid of the high CPU problem. But then you basically are not using Unity anymore.

So Ubuntu Unity ist NOT SUPPORTED by Displaylink. You can pick one of these:

a) Unity with permanent high CPU load
b) Different desktop than Unity
c) Different hardware

trepseq

08-25-2016 03:50 PM

https://bugs.launchpad.net/ubuntu/+s...z/+bug/1616981

jepster

10-21-2016 02:24 PM

We have the high CPU usage and flickering mouse pointer on laptop screen issue also without metacity. Using Ubuntu 16.10. I have two 27" screens connected on the DELL 3100 docking station. The latest Ubuntu driver is installed.

Here is a link to the htop command's output from my laptop:
http://pix.toile-libre.org/upload/or...1477060200.png

Another issue is the very low frame rate. See the report from the glxgears program below.
http://pix.toile-libre.org/upload/or...1477062734.png

Pandemie

04-13-2017 08:49 AM

1 Attachment(s)

So is there any update on this? I have the same issues.

- Ubuntu 16.04.
- Dell D3100 Docking station
- Two 2560x1400 Displays connected
- Not using unity, but i3
- Using LightDM

znd0	01-10-2018 04:26 PM

I get an extremely high FPS reported from glxgears:

Code:

$ glxgears 

Running synchronized to the vertical refresh.  The framerate should be

approximately the same as the monitor refresh rate.

303 frames in 5.0 seconds = 60.553 FPS

1203 frames in 5.0 seconds = 240.384 FPS

8173 frames in 5.0 seconds = 1634.242 FPS

9915 frames in 5.0 seconds = 1982.991 FPS

8718 frames in 5.0 seconds = 1743.354 FPS

8002 frames in 5.0 seconds = 1600.181 FPS

8554 frames in 5.0 seconds = 1710.762 FPS

However, it LAGS :(

I'm running xfce...

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