Linux 5.9 and Display Link

[nvergontbij]

As per January, 1st 2021, all changes have been pushed to branch v.1.7.x: #225.

The updated (simpler) instructions are the following:

1. Download the DisplayLink driver from [the official download page](https://www.displaylink.com/downloads/ubuntu). Then run the following commands:

    unzip 'DisplayLink USB Graphics Software for Ubuntu 5.3.1.zip'
    chmod +x displaylink-driver-5.3.1.34.run
    ./displaylink-driver-5.3.1.34.run --noexec --keep

2. Get the updated evdi version by typing:

    git clone https://github.com/DisplayLink/evdi.git
    cd evdi
    git checkout v1.7.x
    tar cf evdi.tar.gz *
    cp evdi.tar.gz ../displaylink-driver-5.3.1.34

3. Install displaylink:

    cd ../displaylink-driver-5.3.1.34
    sudo ./displaylink-installer.sh install

Tested on Ubuntu 20.04, kernel version 5.10.2 (-surface).
Hope that helps.