Ubuntu – Firefox 82, create or edit shortcut


I would like to start and use Firefox with the command MOZ_X11_EGL=1 without having to type MOZ_X11_EGL=1 firefox into the terminal each and every time (I use the command in order to enable vaapi video acceleration on X11).

  • How can I edit the existing Firefox shortcut in order to add MOZ_X11_EGL=1 ?
  • How can I create a completely new shortcut with MOZ_X11_EGL=1 ?

OS: Ubuntu 20.10, using the preinstalled Firefox version that shipped with Ubuntu.

Best Answer

  • To edit the existing shortcut, copy the desktop file of Firefox from /usr/share/applications (firefox) to the folder .local/share/applications in the home folder. Edit the Exec= line.

    If more users need to be able to use that launcher, place a copy of the .desktop file in a /usr/local/share/applications folder. That will override the copy in /usr/share/applications. You could edit the original launcher directly, but it might be overwritten by a future update.