In an optimus enabled laptoto (Dell XPS 15 L502X) I have a discrete graphics card ( GT525M) and when running Nvidia-settings, one can confirm it:
Yet, The command:
lspci -vnnn | grep VGA
outputs the following:
00:02.0 VGA compatible controller : Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller]) 01:00.0 VGA compatible controller : NVIDIA Corporation GF108 [GeForce GT 540M] [10de:0df5] (rev a1) (prog-if 00 [VGA controller])
The lspci command tells us the discrete card is GT540M and not GT525M. By no means I overclocked the card. Or does it mean the card comes undercocked. I can't tell. A bug maybe?
While, before upgrading to 12.04, under 11.10 the same command did output GT525m.