I need to get rid of the GNOME Desktop Environment which has been installed by default when I updated my pc from 15.10 to 16.04.
After a while, I found myself not only with GNOME DE, but also with Cinnamon alongside (in the login screen, I could choose at least five or six DE!)
Now I am using Unity, and I'm happy with that, and I successfully uninstalled Cinnamon, but now I'm afraid that after uninstalling GNOME I will mess up the Unity DE, since I see many packages running in unity with the packagename starting with gnome-... Would someone mind to help me? Thx in advance
To be honest it would be better to back up for files and all config files in the Home folder and do a fresh install of Ubunutu.
If not try this:
Start by running this command:
Uninstall just ubuntu-gnome-desktop
sudo apt-get remove ubuntu-gnome-desktop sudo apt-get remove gnome-shell
This will remove just the ubuntu-gnome-desktop package itself.
Uninstall ubuntu-gnome-desktop and it's dependencies
sudo apt-get remove --auto-remove ubuntu-gnome-desktop
This will remove the ubuntu-gnome-desktop package and any other dependant packages which are no longer needed.
Purging your config/data too
If you also want to delete your local/config files for ubuntu-gnome-desktop then this will work.
Caution! Purged config/data can not be restored by reinstalling the package.
sudo apt-get purge ubuntu-gnome-desktop
Or similarly, like this ubuntu-gnome-desktop
sudo apt-get purge --auto-remove ubuntu-gnome-desktop
sudo apt-get autoremove
to remove extra packages and dependencies no longer needed on your system.
You might (or might not, depending on if gdm was removed already) need to use these commands to change your login screen back to Unity's default (which is lightDM) run
sudo dpkg-reconfigure gdm
Hit enter at the prompt and then select lightdm from the options. After that you can remove gdm with
sudo apt-get remove gdm
sudo apt-get install ubuntu-desktop sudo apt-get install unity
Reboot your system and press Control-Alt-F1 to get to a text terminal. Log in there and type the following:
sudo apt-get install ubuntu-desktop
sudo apt-get install --reinstall lightdm