DisplayLink Forum - help with ubuntu 18.04 and USB 3.0 to HDMI adapter

Hi folks,

My goal is to get setup with two monitors. I already have one working via HDMI cable directly from the HDMI out on the laptop. There is only one HDMI out. Was hoping to get another one working with a spare USB output.

I have this laptop running ubuntu 18.04 LTS:

Code:

$ lsb_release -a

No LSB modules are available.

Distributor ID:        Ubuntu

Description:        Ubuntu 18.04.4 LTS

Release:        18.04

Codename:        bionic



$ sudo dmidecode -t1

# dmidecode 3.1

Getting SMBIOS data from sysfs.

SMBIOS 2.8 present.



Handle 0x0001, DMI type 1, 27 bytes

System Information

        Manufacturer: Dell Inc.

        Product Name: Latitude E7450

        Version: Not Specified

        Wake-up Type: Power Switch

        SKU Number: 062E

        Family: Not Specified

And I recently bought this adapter because in the comments section someone said it was compatible with ubuntu 18.04
https://www.amazon.com/gp/product/B07DWXWW63

I downloaded displaylink-driver-5.2.14.run from here:
https://www.displaylink.com/downloads/ubuntu

And followed instructions here to install it:
https://support.displaylink.com/know...on-legacy-ubun

The install ran without error.

However the monitor the adapter is plugged into gets no signal. It shows a dialog saying no signal then goes black.

I am not a hardware expert so would be very grateful for tips! did I buy the wrong adapter?

Thanks!

Jesse