I am trying to install proprietary drivers for a printer (EPSON L355, driver: epson-inkjet-printer-201207w) on Ubuntu 14.04 by adding a new printer in Printers.
The installation is currently stuck and I have already hit the cancel button but nothing happens.
My question is, how to proceed when installation seems to be stuck? I do not wish to break anything but this has been stuck for hours. Should I kill the process? And how can I verify if everything is in order afterwards?
My question is similar to https://askubuntu.com/questions/309850/proprietary-drivers-installer-stuck-in-ubuntu-12-04 but I am trying to make it more general.