VIP!!

Where are the kernel source files held in Ubuntu??

I need them to get my nvidia card working, as Ubuntu won't do it.
I tried to install the nvidia package manually, and it asks for a kernel source directory!

Help! Going down for the second time!

You need to install the header files first. Usually it's called linux-headers-XXXXXXX. Search through your package manager for the linux-headers package. Or in Debian, I could install the build-essential package and get the header files as a dependency.

When that's done, they should be installed to /usr/src.

Well that got a bit more complicated. The installer script for nvidia worked fine. But I did it in a low level root shell. It warned me that some systems need to be in run level 3 or the changes may not work. I went ahead anyway. No errors. But on boot, it took a while then up came ubuntu. With nvidia 180, although I had just installed 192.
I repeated, using telinit 3 first, from the basic root shell. That switched me to run level 3. I ran nvidias script again. Then I get the error X is already running.

How do I shutdown X??

Either sudo /etc/init.d/gdm stop or sudo service gdm stop

Do an "sudo init 1" from a terminal.
(Ubuntu and Fedora ???).