lspci
02:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce GT 610] (rev a1)
the pci bus is 02 the deivce id is 00
and why can't find this info in dmidecode
thisi is dmidecode
SMBIOS 2.7 present. 104 structures occupying 5095 bytes. Table at 0x000EB110.
The SMBIOS information is a little bit limited - If you look at the latest specification in section 7 it indicates the structures that would be populated in the information tables. Things like baseboard, etc. The list is pretty self-explanatory, and generally includes the slots exposed by the motherboard and whether they're occupied or not.
The issue is that it relies on the BIOS vendor to populate everything - if they choose not to populate a type 10/type 41 entry for the built-in GPU, then you won't find one in the dmi output, and there's pretty much nothing you can do about it except complain to the vendor.
In general if you've got add-on cards, the only information you would get from smbios is the fact that one of the add-on slots is occupied. I would not expect a bios vendor to interrogate the add-on cards to populate this information as this information would not be considered 'built-in' to the motherboard.
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