Ubuntu 17.10 with DisplayLink 1.4 - Laggy mouse, CPU usage dependent

[tarkingt0n]

Originally Posted by Antoine DAVID RCA

I guys, I have exactly the same issue (Ubuntu 16.04 / DisplayLink 1.4 driver).
I switch to the 1.3.54 driver, it's better but it's not enough at all...
I have a XPS 13,3" with Intel Core i7 (7th generation) + 16Go RAM and it's really slow slow... I'm very disappointed about the product/drivers.

DisplayLink Support Tool output : https://wetransfer.com/downloads/48d...2114404/88ccf4

I believe I'm in the same boat. Dell XPS 13 9360.
Running Linux Mint 18.2 (based on Xenial)
Kernel 4.10.0-40-generic
Running two monitors off the HDMI ports on the Displaylink in addition to the lid monitor

I uninstalled the 1.3.54 driver, rebooted, installed the 1.4 driver, rebooted and I get the laggy mouse and high CPU when working on the external monitors.

I uninstalled 1.4, rebooted, installed 1.3.54, rebooted and that issue no longer occurred... however the process /opt/displaylink/DisplayLinkManager still consumes high CPU as it always has.

[galeon]

Hi guys,

I fought with some similiar problems. Laggy screen, high CPU usage and I just tried this from another thread:

echo 1 > /sys/devices/evdi/add

My system instantly became more responsiveat a level I totally forgot it existed (except when the CPU is under high usage, but that is still better than it being always in stat state)
To be frank: That is far from what I actually would expect and I'm still mad as hell about it and would not buy any system where I would have to use a DisplayLink device again.

Ubuntu 17.10
Dell XPS 13
External Monitor connected via D3100

I still have to figure out what this actually does and make it permanent.

Hope it may help someone.

Cheers,
Finn

[GoSaneFr]

Originally Posted by galeon

echo 1 > /sys/devices/evdi/add

Thanks a lot, this is much better ! Not perfect and haven't been able to make it permanent. sysfsutils package for Debian/Ubuntu should have worked :

• apt-get install sysfsutils
• echo "devices/evdi/add = 1" >> /etc/sysfs.conf

But I don't think it did. However, my third screen is now usable so thanks again.