sudo unity restart won't work, because Unity isn't a sysvinit service
or something. If you want to restart unity, run unity --replace OR unity
--reset (use the latter to revert to default Unity and Compiz settings).
As for sudo service gdm restart, why doesn't it work? It would work only
in a
** Also affects: unity
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/796426
Title:
sudo service gdm restart and sudo unity restart does not work.