I have installed Gnome 3 just to try it using this command:
sudo apt-get update && sudo apt-get install gnome-shell ubuntu-gnome-desktop sudo reboot
After this on log screen I have choice between Unity and Gnome desktop enviroment.
Gnome works fine but when I have rebooted machine and loged in a Unity session there was a "mixed Unity". It was Unity with Gnome font, Gnome dialogs and a Gnome look terminal window. Also when I boot machine there is a blue GRUB screen instead of ubuntu purple one. I have tried to restore Unity
sudo apt-get install unity but nothing was installed ("
...there is latest version..."). Lastly I decided to remove Gnome and tried (from here):
sudo apt-get remove libgtk-3-common sudo apt-get install ppa-purge sudo ppa-purge ppa:gnome3-team/gnome3 #This apt-get remove libgtk-3-common was deleted many things...
Now I can't boot Ubuntu anyway, when I choose Ubuntu from grub (this is dual boot) there is just black screen and cursor in uper left corner. I have tried to automatically update grub by choosing appropriate option in recovery mode.
I really don't want to loose this instalation because there are many settings and software that I really need. How to solve this boot problem and how to remove Gnome?
I also tried to install libgtk-3-common but
libgtk-3-common is already the newest version libgtk-3-common set to manually installed
And tried to
sudo apt-get install ubuntu-desktop
I have solved this unmet dependencies by:
sudo cp /etc/apt/sources.list /etc/apt/sources.list.original sudo cp /var/lib/dpkg/status /var/lib/dpkg/status.original apt-get autoclean apt-get autoremove sudo apt-get -f install
sudo apt-get install --reinstall ubuntu-desktop works and now I can normally boot a Gnome session but Unity still have some problems. There is no launcher, upper line...