In the new Gimp version 2.7 has a new single called new-window or single window mode, just bring them in the menu window and we can activate or deactivate the "Single-window mode" so as to please everyone.
If we want to know all the new 2.7.1 version of the new council to consult this page.
the version is still under development so you may encounter while using glitches
Here's how to install / update to Gimp 2.7.1 varsion.
Open the terminal and first install the key repository of authentication and writing:
sudo apt-add-ppa repository: matthaeus123/mrw-gimp-svn & & sudo apt-get update
now if we have Gimp installed an earlier version you have to update our distribution otherwise install gimp with a simple:
sudo apt-get install gimp
and confirm. Now we have our Gimp installed / updated in our Distribution