DisplayLink stopped working on 18.04

[Chrismb]

Exact same issue here.

[StefanF]

Same issue here with driver version 5.3.1.34.
Reinstalling the driver does not help.
With previous kernel the system is working properly.

[mabu]

I have the same issue after a kernel upgrade from 5.3.0-59-generic to 5.4.0-42-generic.

[mabu]

I had to downgrade to the previous kernel to get my second monitor working again.

[Chrismb]

In case anyone runs into the same issue I did whereby switching to 5.3.0-X kernel brought up the monitors ok but made it run super slow. Turning the laptop monitor on solved the issue per

https://bugs.launchpad.net/ubuntu/+b...15/comments/12

A superwide monitor is starting to look good on days like today!

[Chuck]

I'm not seeing any movement on this, should I be reporting to another channel (git, etc.)?

[KatarzynaCzaja]

Hello,

Please make sure that you are not missing the tools necessary for the installation.
You have to run following command prior to installing the newest driver:

sudo apt install build-essential dkms

You can also check the following article: https://support.displaylink.com/know...on-ubuntu-20-0

Please give that a try and let me know if it helped.

Best regards,
Katarzyna

[StefanF]

Originally Posted by KatarzynaKowalczyk

Hello,

Please make sure that you are not missing the tools necessary for the installation.
You have to run following command prior to installing the newest driver:

sudo apt install build-essential dkms

You can also check the following article: https://support.displaylink.com/know...on-ubuntu-20-0

Please give that a try and let me know if it helped.

Best regards,
Katarzyna

Hello,

i have both packages installed and the driver version 5.3.1 is installed and working properly together with the older kernel 5.3.0-62.
It stopped working with the delivery of the newest ubuntu 18.04 kernel version 5.4.0-42.

I tried again to uninstall der displaylink driver. Reboot with the newest kernel. Install all updates. Ensure that build-essential and dkms is installed and tried again to install the displaylink driver as described in article 1944022-how-to-install-displaylink-software-on-ubuntu-20-0 with the same result.
If i switch back to the older kernel it directly start working again.

It seems to be that the driver is incompatible with the actual ubuntu 18.04 kernel.

BR
Stefan

[schMick]

Originally Posted by KatarzynaKowalczyk

Hello,

Please make sure that you are not missing the tools necessary for the installation.
You have to run following command prior to installing the newest driver:

sudo apt install build-essential dkms

You can also check the following article: https://support.displaylink.com/know...on-ubuntu-20-0

Please give that a try and let me know if it helped.

Best regards,
Katarzyna

Hi Katarzyna,

I noticed in the above reply you linked to the docs relating to the latest (Ubuntu 20) driver, however this thread relates to Ubuntu 18.04. Was that a typo, or are you suggesting that for Ubuntu 18.04 under kernel 5.4 we should be using the latest DisplayLink driver (which isn't listed as being compatible with 18.04)?

In case it's helpful, I'm also experiencing this issue after a reboot (so I assume some updates have now completed on restart), and am seeing the following error from the DisplayLink service:

Starting DisplayLink Driver Service...
modprobe: FATAL: Module evdi not found in directory /lib/modules/5.4.0-42-generic