Black screen on login page

Posted by Sulliwane on Ask Ubuntu See other posts from Ask Ubuntu or by Sulliwane
Published on 2012-09-28T14:52:52Z Indexed on 2012/09/28 15:50 UTC
Read the original article Hit count: 419

Filed under:

unity

|

lightdm

|

ivy-bridge

When I startup my Ubuntu 12.04 installed on a Z77 Pro4 (ASrock motherboard), crucial M4 SSD drive (sata 3), and intel i5 3570k (ivy bridge), I get this black login screen : enter image description here

I also hear the ubuntu login sound "tic toc" but the screen is black, and if I type in some text, only strange characters appears (as you can see on the picture).

Do you have any idea ?

Thanks.

ps : this is an evolution of a previous problem exposed here

© Ask Ubuntu or respective owner

Related posts about unity

Unity 3D won't load - Choosing "Ubuntu" during login still loads Unity 2D

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I just installed Ubuntu 11.10 on my ASUS N43SL laptop and Unity 3D loaded right after installation. But upon reboot, I noticed that Ubuntu loaded Unity 2D instead of Unity 3D. I logged-off and made sure I had "Ubuntu" selected during login, but after many attempts Unity 3D just won't load. Just… >>> More
unity screensaver ? - plans for unity

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Are there plans to develop a screensaver specifically for Unity? Since Unity uses gnome-screensaver by default currently, seems like a reasonable area for a desktop to attract much user appreciation. (My personal interest is in a nice Pictures folder type slideshow screensaver with more settings… >>> More
12.04 Unity 3D Not working where as Unity 2D works fine

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I updated from 11.10 to 12.04 using the distribution upgrade, after that I couldn't log into using the Unity 3D desktop after logging in I would either never get unity's launcher or I would get the launcher and once I tried to do anything the windows lost their decoration and nothing would respond… >>> More
Propose Unity Feature: Open Apps in the upper side of the Unity Launcher [closed]

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Possible Duplicate: What is the best medium for sending feature requests? I don't know if this is the right place to propose a feature. If someone can guide me to the correct forum, he's welcome. I want to propose that the opened applications appear in the upper side of the Unity Launcher… >>> More
Unity 3D Not working where as Unity 2D works fine [closed]

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I updated from 11.10 to 12.04 using the distribution upgrade, after that I couldn't log into using the Unity 3D desktop after logging in I would either never get unity's launcher or I would get the launcher and once I tried to do anything the windows lost their decoration and nothing would respond… >>> More

Related posts about lightdm

What does "error reading login count from pmvarrun" mean?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have the above mentioned error in my /var/log/auth.log file and just try to figure out if this is a harmelss statement. As far as I understand does pmvarrun tells the system how many active session (e.g. logins) a user has on the system. Full output of auth.log Jan 24 17:44:42 P835 lightdm:… >>> More
Unable to sign in. How to debug?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I had to reboot system with reset button. After reboot I can't sign in. When I enter my password It seems like X-server just restarts. I can sing in as guest and also I can sign in in text TTY. Here is first 150 lines of my lightdm.log: [+0.04s] DEBUG: Logging to /var/log/lightdm/lightdm.log [+0… >>> More
LightDM will not start after stopping it

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I am running Ubuntu 11.10 "Oneiric Ocelot", and in trying to install the nvidia CUDA developer drivers I switched to a virtual terminal (Ctrl-Alt-F5) and stopped lightdm (installation required that no X server instance be running) through sudo service lightdm stop. Re-starting lightdm with sudo… >>> More
Raleigh theme on LightDM, Ubuntu desktop, Nautilus window, menus & menu-bars

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
After performing an upgrade from Natty to Oneiric, I had a problem similar to the one reported in here at every system boot: Desktop forgets theme? Everything, from the LigthDM greeter to the ubuntu desktop used the ugly raleigh theme, apart from firefox, thunderbird few other applications after… >>> More
Run a startup script with lightdm

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have a tablet PC and the graphics driver doesn't support xrandr, so in order to rotate the screen I run a script which changes the Xorg.conf file and then restarts lightdm. I also have a script which uses xsetwacom and xinput to change the rotation of the input devices so that the match the new… >>> More