How to completely remove an environment?

Question

linux

I installed xubuntu-desktop on my ubuntu 14.04. The diagonal is simply large at the monitor, and Unity + window titles ate a lot of space. When I restarted xfce, the hotkeys and function keys stopped working, the PC now woke up from the mouse, the screen somehow blocked incorrectly, the layout disappeared. Rolled back via purge xubuntu-desktop. But the loading panel and xubuntu wallpaper for some reason remained. And in the choice of the session she is still.
PS. Put Gnome3 everything worked, but it was worth switching to 2D graphics and the same garbage started as in xfce.
What to do?

Answer 1

aptitude purge ubuntu
aptitude install debian
The astronaut team is already completely confused about the versions of their distributions. Heaped up a bunch of different ones, like in Redmond.
I do not recommend using Gnome 3, it is monstrous and glitchy everywhere.

Answer 2

reinstall the system (from bootable flash 15 min) + 2 hours to fine-tune and load the specific one you need
and it is better to have two partitions for two Linux and a third for your accumulated files
(such as an archive - just a passive partition efes4)),
one - for permanent ( 14.04) the other is to play (15.04)
and you can always change everything using gp (gnupart) ...