I installed Ubuntu 12.04.2 LTS on my Dell Inspiron laptop. I have an Nvidia GeForce GT 525M graphics card but lspci shows 540M? I am unable to install nvidia drivers for this card now.
I also asked another question about unable to install nvidia drivers here.
I tried the solution mentioned in this answer, but doesn't work.
Sorry if it is inappropriate to ask two questions about the same thing...
Edit:
Result of
lspci| grep VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 540M] (rev a1)
optirun glxspheres
[ 1053.429303] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) NVIDIA(0): Failed to initialize the NVIDIA kernel module. Please see the
[ 1053.429348] [ERROR]Aborting because fallback start is disabled.
