Ubuntu’s new Unity shell is certainly pretty, and certainly maximises screen real estate, making it in other words perfect for tablets, laptops and other small screen devices. However, when it comes to desktop machines, and especially ones hooked up to more than one monitor, then certain aspects of Unity start to become pretty damn annoying – like the global menu bar for instance!
Luckily, to disable this annoying little critter turns out to be actually pretty easy. Simply run the following command in a terminal:
sudo apt-get autoremove appmenu-gtk appmenu-gtk3 appmenu-qt
Once this has finished running (and freed up a nice little bit of disk space in the process), simply restart your applications to find the application menus now stuck at the top of the application window – exactly where they’ve always meant to be.
You’ll note that Firefox and Thunderbird haven’t responded to your menu removal, and to achieve the same affect on these two, go into Tools -> Add-Ons and disable the Global Menu Bar Integration extension, followed by a restart.