Not able to install Display Link software in Ubuntu 18.04.1 LTS

[situsnow]

Hi,

I am really new to Ubuntu and I would like to extend my laptop to two monitors.

I followed the commands in this link (https://support.displaylink.com/knowledgebase/articles/684649-how-to-install-displaylink-software-on-ubuntu) to install but failed as "screen1.jpg" in the attachments.

Using the hints in the error, I got logs as "screen2.jpg" and "screen3.jpg". I also attached the log generated by the support tool -- "mu001143611_2018-08-10T11:18:52.524635.zip"

Using command "lsusb -d 17e9:", I can see one device connected - "Bus 002 Device 003: ID 17e9:6006 DisplayLink", but there's no response on both monitors.

Really appreciate if anyone could help in this issue.

Regards,
Snow

[mlukaszek]

Looks like you have secure boot enabled, and (unsigned) evdi kernel module cannot be loaded.

Cheers,
Michal

[situsnow]

Looks like you have secure boot enabled, and (unsigned) evdi kernel module cannot be loaded.

Cheers,
Michal
Hi Michal,

Thank you very much for your hints. It turns out that I have the wrong port connected (really stupid mistakes that I injected the USB embedded with thunderbolt), but I also disabled the secure boot. After upgraded the thunderbolt driver automatically, things work really well now. So I am not sure if the "secure boot" issue actually helps or not.

But anyway, thank you again for the message :)

Regards,
Snow