This is the output from a Dell XPS17 L702X with a Geforce GT 555m (and i7-2630QM):
>sudo dmidecode -s system-product-name Dell System XPS L702X
>sudo dmidecode -s system-version Not Specified
>lspci -vnnn | perl -lne 'print if /^\d+\:.+(\[\S+\:\S+\])/' | grep VGA 00:02.0 VGA compatible controller [0300]: 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 [0300]: nVidia Corporation Device [10de:0dcd] (rev a1) (prog-if 00 [VGA controller])
DSDT.dsl file attached
This is the output from a Dell XPS17 L702X with a Geforce GT 555m (and i7-2630QM):
>sudo dmidecode -s system-product-name
Dell System XPS L702X
>sudo dmidecode -s system-version
Not Specified
>lspci -vnnn | perl -lne 'print if /^\d+\: .+(\[\S+ \:\S+\] )/' | grep VGA
00:02.0 VGA compatible controller [0300]: 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 [0300]: nVidia Corporation Device [10de:0dcd] (rev a1) (prog-if 00 [VGA controller])
DSDT.dsl file attached