ATTENTION: We would like to say before hand that installing Gnome 3 on your system may break it and renderGnome 3 repository is highly unstable even now. So in case you are planning to install Gnome 3 on your production system, we would recommend you to hold on till your distribution comes out with a supported version of Gnome 3. many things un-usable as the
Installing Gnome 3 Desktop in Ubuntu 11.04 Natty Narwhal
Step 1: Install the Gnome 3 team's Ubuntu PPA (repository) using this command:
sudo apt-add-repository ppa:gnome3-team/gnome3
Step 2: Now update your software sources:
sudo apt-get update
Step 3: Install the Gnome 3 Desktop environment using this command:
sudo apt-get install gnome-desktop3
If the above does not work for you, then you can try the following, as suggestedmentioned user has talked about) by Aechols in the comments. (Please not we have not tested these steps, which the above
sudo apt-get dist-upgrade
sudo apt-get install gnome-shell
sudo apt-get install gnome3-session
Installing Gnome 3 Desktop in Ubuntu 10.10 Maverick Meerkat
Gnome 3 Desktop can be installed in Ubuntu 10.10 Maverick using the following commands. Please note that this PPA (For Ubuntu 10.10) is old and hasn't been updated unlike Natty and there is NO WAY TO ROLL BACK!
sudo add-apt-repository ppa:ubuntu-desktop/gnome3-builds
sudo apt-get update
sudo apt-get install gnome-desktop3
Reboot your computer after the installation is over so that the new components and the environment can sink in properly. In case you are facing a problem or want to report a bug, you can do it here.