lspci displays network interfaces but systool does not

Solution Verified - Updated -

Issue

  • After an update from RHEL 6.1 to RHEL 6.4, some PCI devices are not seen.
  • The system reports 8 NIC ports in lspci, but only a few of the NICs are seen in systool
  • These devices worked fine on RHEL 6.1, and booting into the old kernel allows the devices to start again

Environment

  • Red Hat Enterprise Linux 6
  • Upgrading from RHEL 6.2 (kernel-2.6.32-220) or earlier to RHEL 6.3 (kernel-2.6.32-279) or later
  • nVidia nForce CK804 system chipset (optional)

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