Accidentally I set the scale menu size to 6. This resulted to both menu and bar occupy half of my screen. I tried to restore it but the window of the settings cannot be re sized, so, it's not possible to see where this option is and reset it.
Is there any way to change it, even from command line?
In the system I already have other user accounts with administration rights and I can use them to gain access the user account that has this problem, if necessary.
System information: Ubuntu 14.04 LTS 64bit
Many thanks in advance.