CX8 Device lspci information

Infrastructure & Networking Adapters and Cables InfiniBand/VPI Adapter Cards
1

During our PCIe device inspection using the lspci command, we encountered an unexpected scenario. While checking device information, we identified a device labeled as Device 3. However, there was no information about Device 1 or Device 2 in the lspci output.

Additionally, the target link width for Device 3 was displayed as x1, which caused confusion regarding the actual connection speed. The absence of the earlier devices and the seemingly limited link width raised questions:

  • What happened to Device 1 and Device 2?

  • Is the reported link width of x1 correct, or is there a misconfiguration?

  • Could this affect device performance or system behavior?

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2

Hello,

Please make sure the devices are physically installed and properly seated in the PCIe slot.
Also, verify that they are enabled in BIOS/UEFI and no lanes are disabled due to resource limitation.

I would also suggest reviewing dmesg for any pci related errors that might indicate why the devices did not enumerate.

If the issue still persists, please open a case directly with Enterprise Support and it will be handled based on entitlement.

Thanks,

Jonathan.

3

Thank you for your advice — it was very helpful. The issue has been resolved.”

4

It would be helpful if you provide the solution that was implemented to fix the issue so that it would be helpful to others.

Thanks.