Sun Server X4-8 Product Notes

Hotplugging PCIe Card Causes Error AER (16949957, 16956385)

Hotplugging PCIe cards in a Linux system might cause AER due to an option ROM speed mismatch.

Workaround

If you encounter an AER after a PCIe card hotplug:

• For Oracle Linux 6.5, add the following line to the /etc/grub.conf file:

  pci=pcie_bus_perf

• For Red Hat Linux 5.10 or 6.5 (or equivalent Oracle Red Hat compatible Oracle Linux), use the BIOS Setup utility to set the Maximum Payload to 128.

  1. Access the BIOS Setup utility.

  2. Select the I/O tab.

  3. Select PCI Subsystem Settings from the drop-down list.

  4. On the PCI Subsystem Settings page, set Maximum Payload to 128.

     The default is 256.