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This question already has an answer here:

Last week i tried to install Ubuntu 11.04 and i have a problem i cannot solve.

Mit Grafics Card is an Nvidia 9500GS which worked well with Ubuntu, Compiz and stuff before.

The Problem:

  • i installed Ubuntu 11.04 from the life cd besides an Windows 7 Home Premium
  • When i boot up ubuntu everything seems to be right
  • The logon screen appears
  • When i log in the screen is black in an interval of less then a second i can see the gui elements (panels, desktop icons etc.. flickering).
  • The only way i can shutdown the system now is doing it the hardware-way

What i tryied so far (1. Attemp):

  • i logged into the Safe-Mode which works well
  • i tryied to install the nvidia properitary drivers through the gui this does not work saying "Can't find a valid source for the driver"
  • i activated the nvidia driver through the console with jockey which worked. In the gui there was the green dot then
  • rebooting, trying to log in again Same Problem

What i tryied so far (2. Attemp):

  • so i rembered that in some versions of ubuntu in the past i had to install fresh nvidia drivers downloaded from their website.
  • i downloaded the drivers from nvidia
  • tryied to start them (unfortunately the installation process requires to switch off X Server) which i tried by the way i knew (sudo /etc/init.d/gdm stop). Which tells me "Use sudo service gdm stop" or something similar. I tried that without success.
  • Then i tried to switch to a console without gui by hitting "strg+alt+f1" but this results in eternal black. I can then switch back to the gui through "strg+alt+f7".

So the problem with my second attemp is, that i can't get a console without a gui and i can't install nvidia drivers with the gui ant i can't shutdown the gui while being in the gui (spooky)...

So do you have any ideas, what i did wrong or what i could try to get this fixed again? Maybe its not a Graphics Problem at all and you know better?

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marked as duplicate by Luis Alvarado Apr 20 '13 at 1:28

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Mhm... thanks four the links. But in know everything in there. This does not solve my problem or even adresses it. My Problem is before installing Nvidia software. – Chris Jul 20 '11 at 16:56
I see. what happens when you do sudo service gdm stop? – user606723 Jul 20 '11 at 17:39

try to install latest driver

sudo apt-get install nvidia-glx-185

If you getting any problem after install then log with recovery mode[2nd option of grub menu] go to root shell.

sudo apt-get autoremove nvidia-glx-185
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thanks for your help, i got this to work yesterday afternoon before i read this answer here so i didn't try this. – Chris Jul 21 '11 at 11:43

Thanks for all the information. i couldn't get the service to stop and also no console windows without gui, but i solved the main problem. For some reason i had to make all updates in the safe mode. After that, i was able to install the NVidia driver through the jockey-gui successfully.

Now i habe a nice 11.04 installation with unitiy and everything working nice.

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