In this quick tip we will see how to deactivate global Menu in Unity.
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To deactivate Global Menu for applications, open terminal and enter the following command:
sudo apt-get remove appmenu-gtk3 appmenu-gtk appmenu-qt
To deactivate golbal Menu for Firefox and Thunderbird enter the following:
sudo apt-get remove firefox-globalmenu thunderbird-globalmenu
I tested both commands above and worked fine.
Global Menu activated
Global Menu deactivated
Via UbuntuLife