For this extension to work it is needed first of all install ddccontrol by running sudo apt-get install ddccontrol
Later you have to allow ddccontrol to run as sudo. You can do this by editing your sudoer file as follows:
- Open a terminal (ctrl+alt+T)
- Enter the following command sudo visudo
- Once the file opens paste (ctrl+shift+v) the following command and replacing username with the your own username username ALL=(ALL) NOPASSWD: /usr/bin/ddccontrol
Make sure that /usr/bin/ddccontrol is the right path by running which ddccontrol