Revision history [back]

To add to @tfoote's answer: If you had installed the Unity window manager before, but then switched to a different one (like XFCE or KDE), you might run into the situation that the menu bar is still hidden, but hovering the mouse at the top of the screen does nothing. To fix this, run:

sudo apt remove indicator-appmenu

If you are running Unity, there are more hints on how to configure whether to hide the menu bar on a per-application basis here: https://askubuntu.com/questions/10481/how-do-i-enable-or-disable-the-global-application-menu

To add to @tfoote's answer: If you had installed the Unity window manager before, but then switched to a different one (like XFCE or KDE), you might run into the situation that the menu bar is still hidden, but hovering the mouse at the top of the screen does nothing. To fix this, run:

sudo apt remove indicator-appmenu

This seems to be a bug in RViz (or Qt), since other (GTK-based) applications don't have this problem.

If you are running Unity, there are more hints on how to configure whether to hide the menu bar on a per-application basis here: https://askubuntu.com/questions/10481/how-do-i-enable-or-disable-the-global-application-menu