Tente isto:
No terminal, execute:
exec sudo -i
dpkg --configure -a
apt-get -f install
apt-get update
apt-get dist-upgrade
apt-get install --reinstall ubuntu-desktop
apt-get autoremove
apt-get clean
Eu atualizei de 14.04 para 16.04 e recebi isso:
ubuntu 16.04.1 LTS pawan-vostro-3559 tty1
pawan-vostro-3559 login: pawan
password:
last login: sunday Dec 25 17:19:33 IST 2016 on tty1
Welcome to ubuntu 16.04.1 LTS(GNU/Linux 3.19.0-78-generic x86_64)
*Documentation: https://help.ubuntu.com
*Management: https://landscape.canonical.com
Tente isto:
No terminal, execute:
exec sudo -i
dpkg --configure -a
apt-get -f install
apt-get update
apt-get dist-upgrade
apt-get install --reinstall ubuntu-desktop
apt-get autoremove
apt-get clean