Upgraded Ubuntu 15.04 and its going into login loop after that
1520
How to install software or upgrade from an old unsupported release?
7014
I can't access the login screen in Lubuntu 16.04 LTS (2)
17860
Black screen after login Kubuntu 15.04
69553
Unable to login to my wordpress site. reauth=1 redirection loop
9212
Freeze after upgrading kernel to 3.13.0-66 (14.04) or 3.19.0-31 (15.04)
76248
"Failed to start session" after interrupted upgrade to 14.04
36354
Why am I not able to shutdown, log-off and restart after an upgrade to Ubuntu 13.10?
23702
Login Loop - "BadValue (integer parameter out of range for operation)" - 16.04
62361
Ubuntu stuck on login screen
135035
How to fix the UUID in Grub after restore from another machine?
8535
Long wait time on login
88808
12.04 stuck at the login screen
26634
How do I debug when the system freezes or when it crashes back to login?
8699
Getting "System program problem detected" pops up regularly after upgrade
49173
How to repair/restore ubuntu 10.04 after 'sudo chmod / 777'
150811
Ubuntu 16.04 freezes on login screen, no keyboard or mouse working
91361
Messed up my PATH environment variable and can't login to desktop