Blushing. But, my advice might not work.

When you run
sudo nvidia-xconfig
it brings up an error before it creates the
xconfig /etc/X11/xorg.conf file, saying pkgconfig isn't installed. But I could have this wrong, (
maybe it said dpkg) but it does mention something like this. My poor memory for remembering details shows. I don't know why, but I think it said that pkgconfig isn't installed, but it is available in the repositories. Again, I can't remember the details. I'll have to go over it again and see exactly what it says.
Okay, it says:
"unable to locate/open x configuration file
sh: pkg-config: not found
New X configuration file written to '/etc/X11/xorg.conf'"
From reading this bug report, the person says nvidia-xconfig depends on pkg-config.
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/575306/+activitySince I got that error, I went ahead and installed pkg-config
Lisa Marie
Edited: Oh, I see you were able to install the driver without pkg-config.
I've been playing with reverting back to nouveau and back again to nvidia to see how I did it.
Looking in /etc/X11/ there are the two new files:
xorg.conf and
XvMCConfig.
To revert back to nouveau, I use Midnight Commander:
At boot, I select F4 and boot select safe-mode and when it gets to greet login screen, switch to console (Ctrl+Alt+F1)
sudo mc
then I went ahead and deleted the two new files:
xorg.conf and XvMCConfig
as I want it back to how it was before I did the nvidia-xconfig command.
Then,
sudo reboot
and I'm back to using nouveau. This way I can test the Display GUI, when it is available from team Pardus, the GUI that lets you select your preferred driver.
To go back to nvidia, I booted again in safe-mode, switched to console, and:
sudo nvidia-xconfig
sudo reboot
then at boot screen I choose under F4, modprobe/probe again and then edit the kernel boot line, "blacklist=nouveau", though I don't know if the modprobing is needed. But, it worked for me. Now, time to switch back to nouveau.

I'll also remove pkgconfig via pisi.
Lisa Marie