Have tried several solutions for other flavors
How to disable window move with alt + left mouse button?
How to disable alt+click from moving windows in Unity 2D?

but no luck so far. Any ubuntu-mate users no how to disable alt-option LEFT & RIGHT Mouse button clicks? They interfere with most 3D apps. I don't want option LEFT click to drag my entire IDE window, or option RIGHT click to resize my IDE.

2 Answers 2


I read this as "disable" as to "completely remove the functionality of" which was the case I had because it was conflicting with VSCode and Terminator's alt+click functionalities. In order to do that, open up dconf. If you don't have it you can get is using

sudo apt-get install dconf-editor -y

After that open dconf and navigate to org → mate → Marco → general → mouse-button-modifier. There change the switch to not use the default and remove 'Alt' from the text area leaving an empty text box. dconf org.mate.Marco.general.mouse-button-modifier Afterward, you will be able to use the functionalities of other programs with alt+click, but you will no longer be able to move a window with anything other than it's title bar.


System -> Preferences -> Look and Feel -> Windows -> Behavior -> Movement Key

Change from Alt to Super.


  • Please enrich your answers with screen shots. Jan 26, 2017 at 0:24

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