galternatives fails to work? The application window opens but you’re unable to make any changes? Perhaps you’re seeing errors like
sh: 1: /usr/sbin/update-alternatives: not found?
galternatives package in Ubuntu 14.04 (Trusty Tahr) suffers from a fatal flaw. It calls a hardcoded path to
update-alternatives which does not exist. This is mostly the fault of dpkg, as it failed to include a symlink to
update-alternatives in /usr/sbin as it had done in previous releases. Unfortunately
galternatives did not help matters by referencing a symlink instead of a canonical path.
Luckily, this appears to have been fixed in future releases. In the meantime, there is an easy fix:
sudo ln -s ../bin/update-alternatives /usr/sbin/