DisplayLink USB Graphics Software for Ubuntu 1.3.54 won't install - permission denied

[mlukaszek]

The installer script is a bash script and its shebang is #!/bin/bash.
Is it possible you either don't have bash installed or don't have privileges to use it?

You can extract the .run file with

--keep --noexec

options.
Then, you can modify the installer script as you like.

Cheers,
Michal