Установите рабочий стол gnome в kubuntu

Я пытаюсь установить рабочий стол gnome из kubuntu. Итак, я сделал это: sudo apt-get install ubuntu-desktop Все прошло хорошо, но теперь я получаю эту ошибку:

sudeep@sudeep:~$ sudo apt-get install ubuntu-desktop 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
ubuntu-desktop is already the newest version.
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 firefox-globalmenu : Depends: firefox (= 20.0+build1-0ubuntu0.12.10.3) but it is not going to be installed
 firefox-gnome-support : Depends: firefox but it is not going to be installed
 lightdm-remote-session-uccsconfigure : Depends: firefox but it is not going to be installed
 xul-ext-websites-integration : Depends: firefox (>= 9.0) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

Пожалуйста, помогите мне исправить это.

РЕДАКТИРОВАТЬ sudo apt-get -f установить ubuntu-desktop

Reading package lists... Done
Building dependency tree       
Reading state information... Done
ubuntu-desktop is already the newest version.
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 firefox-globalmenu : Depends: firefox (= 20.0+build1-0ubuntu0.12.10.3) but it is not going to be installed
 firefox-gnome-support : Depends: firefox but it is not going to be installed
 lightdm-remote-session-uccsconfigure : Depends: firefox but it is not going to be installed
 xul-ext-websites-integration : Depends: firefox (>= 9.0) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).