MATE desktop has recently migrated, as of version 1.6, from using
gsettings. This breaks traditional solutions for changing MATE's window manager to Compiz.
I assume you have already installed Compiz. If not:
sudo apt-get install compiz
gsettings has an equivalent operation to the
mateconf-editor key-change operation you had to do to set the window manager to Compiz. Now, to activate Compiz, simply run the following terminal command:
sudo gsettings set org.mate.session.required-components windowmanager compiz
This will change the
windowmanager key to
compiz in the
org.mate.session.required-components schema. Next, I highly recommend installing CompizConfig Settings Manager:
sudo apt-get install compizconfig-settings-manager
With this, you are done. You may either run
compiz --replace in the Terminal to start Compiz, or simply reboot your machine. I recommend the latter, as the former may have problems.