GeForce 9500 GT
Fedora Core 11
nVidia driver: 185.18.x
I was originally running FC10 and upgraded to FC11. I installed the latest nVidia driver (185.18.36) and had troubles getting it to work. I was running 180.29 and reinstalled that and ran into problems and re-installed 185.18 and actually got it to work.
However, the FC11 upgrade (from FC10) was a big fail. As I was testing out the new OS, I found many OS items not working. Unfortunately, I had to re-install FC11 from scratch.
Now I'm stuck. I've tried nVidia drivers versions 185.18.36, 185.18.14, 180.29, 180.60, all with no luck.
The basic FC install turns SELinux on by default. I caught that and set it to 'permissive' before I re-installed the drivers. Not sure if having SELinux on during my initial driver installs was a problem...
With 185.18.x I see 'NVIDIA: could not open device file /dev/nvidia0' logged when I 'startx'. The end of the /var/log/messages has the following when I 'startx'.
vmap allocation for size 16781312 failed: use vmalloc=<size> to increase size.
NVRM: RmInitAdapter failed! (0x26:0xffffffff:1092)
NVRM: rm_init_adapter(0) failed
I'm currently in the process of re-installing FC11.....