Ubuntu: Black Login Screen after installing updates 12.04


I love my lixux 12.04..till yesterday it installed new updates and i clicked on restart..

As system went to grub all normal & loaded normal..then instead of pretty desktop (auto login turned on) i have black screen asking for login and password..

Why? How i get my desktop back to before?

Please help new noob!!! This is due to updates i am sure, nothing in hardware has changed and no other display settings changed.. using AMD diver from there site linux one for my raedeon 6850 and have catalyst driver working fine..

i have tried typing in weird commands but they didnt do much like sudo start lightdm and sudo startx .. didnt do anything just froze.. i dont exactly no what these commands do but something to do with black screen..so i thought id try it..



I tried your solution but it didn't seem to work. I removed my fglrx driver by the following command:

sudo sh /usr/share/ati/fglrx-uninstall.sh  

And then my desktop came back after reboot. Then reinstalled ATI catalyst driver. Now, everything is working fine.


in that black screen, login with your username and password, and install gdm

sudo apt-get install gdm  

that might solve the problem, I also had same problem when I did some things with my installation..


I have the same problem with Black Opal which is based on 12.04. Also switching to tty8 then tty7 seems to get you to the login screen with lightdm installed. I switched to gdm and the problems is gone, I just don't like how it changed the login screen to the old look...

Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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