I'm getting these errors when I try to start x with "nvidia" as the driver in X11 config.

(EE) Unable to open /usr/X11R6/lib/modules/extensions/libglx.a
(EE) Failed to load module "/usr/X11R6/lib/modules/extensions/libglx.a" (open failed, 2)
(EE) NVIDIA(0): Failed to initalize the NVIDIA kernel
(EE) NVIDIA(0): *** Aborting ***
(EE) Screen(s) found, but none have a usuable configuration

Fatal server error:
no screens found

Works fine with default vesa drivers. (thats how I booted back into x) I'm running mandrake 10.1 with my own 2.6.10 kernel.

type and try "startx" again. If it works, add it to the end of /etc/modprobe.preload like so

I don't think the latest nvidia driver 6629 works with 2.6.10 yet. You'll need to wait for the next driver release or try a patch. I think there may be one available. I went back to the 2.6.9 kernel on my production box for the moment...

There is some info here...
http://www.nvnews.net/vbulletin/showthread.php?t=42964

oh i didn't see that.... i'd agree with amosf on this, then

I'm running 2.6.10 with 6629 right now on gentoo fine.
Make sure you reinstalled the driver when you upgraded the kernel (needs to build a new kernel object) and then try modprobe nvidia and startx again

there are patches availble for the nvida drivers and info how to patch them for the 2.6.10 kernel

i had to do this if you want to keep the same kernel

search google or one of my posts

modprobe says it can't find the nvidia module. I'll try patching then running the drive install again

I use the 2.6.10 kernel with no worries concerning my nvidia drivers, just need to reinstall the nvidia drivers after you install a new kernel so it can build a new module

I am using kernel version 2.6.10 and I have installed nVidia graphics version 6629 using gcc version 3.3.4. Of course you have to compile drivers (modules) that you did for your previous kernel version. If you do not, the module design for the older kernel will not work with the new kernel. You do not need a patch. You probably did not select the right options that nvidia needs during configuring the 2.6.10 kernel. There could be problems with Geforce6 video cards because nVidia just added support for certain GeForce6 cards. Also I had problems compiling programs in Mandrake 10, so it could be Mandrake 10 screwd up the setup for compiling might messed up compiling the kernel.