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I have a PCIe (ver 2) linux system. I want to find out how many PCIe lanes were negotiated and are being used between my device and the host controller . (I do not know how many lanes my device supports or how many lanes the slot has)

Kyle Brandt
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MK.
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1 Answers1

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lspci -vv should give you this information, look for the "Width" part in the LnkCap section.

Sven
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    Note that "LnkCap" is the capability of the slot, and "LnkSta" is the actual status of the card. I had to run this as root to get the link info. – Nattgew Nov 19 '16 at 17:02