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I had put in a new video card on the box and tried installing nvidia drivers version 173 via command line and System ➜ Administration ➜ Additional Drivers.

Now when I try to restart ubuntu 11.04 it is starting in command prompt mode.

What can I do to fix this or get the things back as they were?

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migrated from Jun 28 '11 at 2:33

This question came from our site for system and network administrators.

I'm having a similar problem... I know I have nvidia hardware on this thing, but I didn't actively try to install any new drivers. What happens when you type "unity" into the prompt? – Daniel Jun 28 '11 at 3:18
Have you tried typing startx? In the past when my boot has failed to start graphics, I found simply typing that to usually be a quick and simple solution. – Christopher Kyle Horton Jun 28 '11 at 4:56
Maybe a conflict with /etc/X11/xorg.conf? Try moving it away and reboot (sudo mv /etc/X11/xorg.conf{,.back}. – htorque Jun 28 '11 at 6:17

When this happened to me, I went into recovery and then failsafe graphics (your gfx is turned off) and then you uninstall the drivers. this should revert to how things were. =)

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