Performance Problems - Lenovo Flex System x440 Compute Node Installation And Service Manual

• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
Chapter 5 "Parts listing, Types 7167 and 2590" on page 53
• See
replaceable units (CRU) and which components are field replaceable units (FRU) that must be replaced only
by a trained service technician.
• If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Symptom
External USB device not
recognized
PCIe adapters not recognized/
functioning

Performance problems

Use this information to solve performance problems.
Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
Lenovo Flex System x440 Compute NodeInstallation and Service Guide
872
Action
1. Make sure that the correct device drivers are installed on the compute node.
See the product documentation for the USB device for information about device
drivers.
2. Use the Setup utility to make sure that the device is configured correctly.
3. If the USB device is connected to a hub or the console breakout cable,
disconnect the device and connect it directly into the USB port on the front of
the compute node.
4. Run the DSA USB diagnostic tests.
1. Check the event log and resolve any issues related to the device.
2. See
http://www.lenovo.com/ serverproven/
supported.
3. Make sure that the adapter is installed in a correct slot.
4. Make sure that the correct device drivers are installed for the device.
5. Resolve any resource conflicts if running legacy mode (UEFI).
6. Check
http://www.lenovo.com/support
7. Make sure that any adapter external connections are correct and that the
connectors are not physically damaged.
to determine which components are customer
to validate that the adapter is
for any service bulletins.