Sounds like there is no Nvidia Module installed.
Anything like this in /var/log/syslog ?
Feb 23 15:09:49 moon44 kernel: [ 29.659969] nvidia: module license 'NVIDIA' ta
ints kernel.
Feb 23 15:09:50 moon44 kernel: [ 29.914750] nvidia 0000:01:00.0: PCI INT A ->
GSI 18 (level, low) -> IRQ 18
Feb 23 15:09:50 moon44 kernel: [ 29.914820] nvidia 0000:01:00.0: setting laten
cy timer to 64
Feb 23 15:09:50 moon44 kernel: [ 29.915050] NVRM: loading NVIDIA UNIX x86 Kern
el Module 195.30 Fri Dec 18 13:34:49 PST 2009
Send output of "lsmod |grep nvidia" :
nvidia 9865060 60
agpgart 42184 1 nvidia
i2c_core 31892 16 ves1x93,tda10023,dvb_pll,lnbp21,stb6100,stv0299,stb0899,dvb_ttpci,budget_av,budget_ci,dvb_usb_opera,budget_core,ttpci_eeprom,dvb_usb,i2c_piix4,nvidia
and "modinfo nvidia"
filename: /lib/modules/2.6.27-16-generic/updates/dkms/nvidia.ko
license: NVIDIA
alias: char-major-195-*
alias: pci:v000010DEd00000E00sv*sd*bc04sc80i00*
alias: pci:v000010DEd00000AA3sv*sd*bc0Bsc40i00*
alias: pci:v000010DEd*sv*sd*bc03sc02i00*
alias: pci:v000010DEd*sv*sd*bc03sc00i00*
depends: agpgart,i2c-core
vermagic: 2.6.27-16-generic SMP mod_unload modversions 586
parm: NVreg_EnableVia4x:int
parm: NVreg_EnableALiAGP:int
parm: NVreg_ReqAGPRate:int
parm: NVreg_EnableAGPSBA:int
parm: NVreg_EnableAGPFW:int
parm: NVreg_Mobile:int
parm: NVreg_ResmanDebugLevel:int
parm: NVreg_RmLogonRC:int
parm: NVreg_ModifyDeviceFiles:int
parm: NVreg_DeviceFileUID:int
parm: NVreg_DeviceFileGID:int
parm: NVreg_DeviceFileMode:int
parm: NVreg_RemapLimit:int
parm: NVreg_UpdateMemoryTypes:int
parm: NVreg_UseVBios:int
parm: NVreg_RMEdgeIntrCheck:int
parm: NVreg_UsePageAttributeTable:int
parm: NVreg_EnableMSI:int
parm: NVreg_MapRegistersEarly:int
parm: NVreg_RegistryDwords:charp
parm: NVreg_NvAGP:int
and " dpkg -l|grep nvidia"
ii nvidia-173-modaliases 173.14.12-1-0ubuntu5.1 Modaliases for the NVIDIA binary X.Org drive
ii nvidia-177-modaliases 177.82-0ubuntu0.1 Modaliases for the NVIDIA binary X.Org drive
ii nvidia-180-modaliases 180.60-0ubuntu9 Modaliases for the NVIDIA binary X.Org drive
ii nvidia-195-kernel-source 195.30-0ubuntu1 NVIDIA binary kernel module source
ii nvidia-195-libvdpau 195.30-0ubuntu1 Video Decode and Presentation API for Unix
ii nvidia-71-modaliases 71.86.04-0ubuntu10 Modaliases for the NVIDIA binary X.Org drive
ii nvidia-96-modaliases 96.43.09-0ubuntu1.1 Modaliases for the NVIDIA binary X.Org drive
ii nvidia-common 0.2.4.2 Find obsolete NVIDIA drivers
rc nvidia-glx-180 180.60-0ubuntu9 NVIDIA binary Xorg driver
ii nvidia-glx-195 195.30-0ubuntu1 NVIDIA binary Xorg driver
ii nvidia-settings 190.36-0ubuntu5 Tool of configuring the NVIDIA graphics driv
ii pluto-nvidia-video-drivers 2.0.0.44.09112922522 <insert up to 60 chars description>
root@dcerouter:/usr/pluto/diskless/44# dpkg -l|grep nvidia-glx
rc nvidia-glx-180 180.60-0ubuntu9 NVIDIA binary Xorg driver
ii nvidia-glx-195 195.30-0ubuntu1 NVIDIA binary Xorg driver
Greetings
Viking