I have problem with this function because i work in Maya and other 3D applications that use this key combination... This option on Ubuntu 11.04 was in "window" section so i could change it to something else to avoid conflicts... where is this located in Ubuntu 11.10?
It’s a Compiz plugin.
Install Compiz Config Settings Manager (
sudo apt-get install compizconfig-settings-manager in a terminal) and open it.
Once opened, search for a “Move Window” plugin. Select it, and disable or change the first option, “Initiate Window Move”.
For Unity 2d:
With regard to Fitoschido's answer:
Clicking on the
<Alt>Button1 and just disabling it didn't work for me - it had no effect (and when restarting the computer, is was enabled again!). (I'm on Ubuntu 13.10)
What worked was clicking on the
<Alt>Button1 and setting it to a different combination, for example ALT-SUPER button1.