Ubuntu 18

The GiD InstallJammer installer has problems with the 'Ubuntu 18 Gnome desktop environment', and become locked asking the install language window.

Note: once locked is possible to find the id of the locked process with something like

ps -auxw | grep gid14

and then can kill the process with

kill <pid>

To avoid GUI installer problems it is possible to run it without GUI with the flag --mode console
e.g.

./gid15.0.1-linux-x64-Install --mode console