Ubuntu version is 12.04.3. My computer is a Asus laptop, UL30Jt with a Nvidia graphics card. I previously had problems getting the graphics drivers to work, but I resolved that previously today. Afterwards I attempted to reboot and it worked fine, then I installed glfw and afterwards it won't start the gui after restarting.
I am not completely sure, but I think it was after I installed glfw, and it's dependencies xorg-dev and libglu1-mesa-dev.
Pressing ctrl + alt + f1 brings up the terminal where I can login.
I tried running for example glxinfo, which just prints:
Error: unable to open display.
I tried running glxinfo previously, when I was trying to figure out my driver problems nad it printed .. information of some kind. (Different from this error message, I dont remember what it was.)
I have been using Ubuntu for about 4 months, so I am not terribly experienced with different useful commands.
I have looked at this without finding anything useful.
startx gets a fatal error:
Fatal server error: no screens found
sudo service lightdm start or
sudo start lightdm just takes me back to the blinking underscore, and pressing ctrl + shift + f1 takes me back to the terminal.
I tried running
sudo apt-get install nvidia-current (which installed a bunch of stuff) and then rebooting which had no effect.
This also happened the last time I tried to install glfw, I don't know if it is the actual cause, but it has happened after attempting to install glfw twice in a row now. The last time I got the error message "could not write bytes broken pipe", however this time I don't get that. I fixed it by reinstalling Ubuntu, but it would be painful to have to do that again.