Re: Black login screen on 10.10 (weird problem)
I've encountered this time and time again -- and I'm NOT using a laptop -- and only on version 10.10.
What I've had to do to "fix" it (I put "fix" in quotes because it is not permanent), is the following:
1) Boot into GRUB selecting the Recovery Mode
2) Select the option to repair broken packages
3) When done, and the prompt is back, enter "startx"
That usually gets me a desktop and when I then reboot, the next time, I get a regular desktop screen -- until a few days later, when this starts all over again.
I tried to raise this as a concern a while back, but I got so soundly "thrashed" for DARING to criticize Ubuntu 10.10 that I've not brought it up since.
Ubuntu 12.10; Mint 15; MS Win7 & Win8.
Will not respond to PM requests for support -- use the forums.