So hi! First question, which seems to be a big and common problem. And that is the login screen problem, where everything works fine until you enter your password and hit enter. I've read some posts that tells me to try to open the terminal through ctrl+alt+t or ctrl+alt+f1. Ctrl+alt+f1 is the only one that works, but I cant then login. I type in the name/password of my account, only to get the error message "login incorrect". I have tried several different names but it stills gives me the same error. It worked earlier today until I tried to extend my partition through gparted.
So my question is
"How can I get into the terminal through ctrl+alt+f1?
Specs: Processor: Eight core amd Ram: 8gb gddr5 Graphic card: sapphire radeon r9 290 Dualboot. Windows 10 and Ubuntu 14.04 lts