I have an Nvidia GeForce 8400 card. Everything looks fine when the PC is booting, and I can also see the Ubuntu loading screen, but when it's time to show the login screen I see some strange freezes like multiple colors on my screen and then it becomes black and there is no way to get back.
I also tried to press Ctrl+Alt+F1 but I don't get a shell prompt. nvidia-current
and nvidia-settings
are already installed.