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Tonight My system informed me of an update, having preformed the update I was asked to restart the system. Now on start up I'm now presented with the linux console, asking for my user name and password. How do I get back my graphical interface back, when the update left conflicting versions of nVidia Graphics Drivers in place.

I get the error
ERROR API mismatch Nvidia Kernel is ver 304.48 but the driver component is 295.40
when attempting to start X from the console.

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Solutions for similar problems might help: askubuntu.com/questions/141606/… –  belacqua Nov 17 '12 at 4:44
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1 Answer

Your getting to the text console because X won't start. The easiest way to get it working again so you have a UI to work from is to run

sudo mv /etc/X11/xorg.conf /home/username/xorg.conf.backup
sudo apt-get remove nvidia-* sudo restart

When you come back up, everything should auto detect fine and you will get a basic GUI.

From that point your going to have to set back up your video card drivers. To do that:

sudo apt-get install nvidia-current
sudo restart

When you restart this time you should have a fully working GUI.

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Thanks coteyr I will try this also my system is an ASUS with a i7 the graphics card is a NVIDIA –  Stan Nov 16 '12 at 18:09
    
Ok, then once your back inside the basic GUI, run "additional hardware drivers", and activate the Nvidia drivers. –  coteyr Nov 16 '12 at 18:33
    
Hi That didn't work –  Stan Nov 16 '12 at 19:27
    
this was OK .. sudo mv /etc/X11/xorg.conf /home/username/xorg.conf.backup, the "restart" wouldn't work. I forced a restart but on restarting I get just a blank screen. any ideas ! –  Stan Nov 16 '12 at 19:32
    
Define "blank screen". It's normal for that next boot to take FOREVER. Also do you/can you get to a console again? You likely just need to resetup the drivers. If you can get to a console then it's easy. –  coteyr Nov 16 '12 at 20:35
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