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Intermittent problems

Use this information to solve intermittent problems.

Intermittent external device problems​

Complete the following steps until the problem is solved.

  1. Make sure that the correct device drivers are installed. See the manufacturer's website for documentation.

  2. For a USB device:

    1. Restart the compute node and press the key according to the on-screen instructions to display the LXPM system setup interface. (For more information, see the “Startup” section in the LXPM documentation compatible with your server at Lenovo XClarity Provisioning Manager portal page.) Then, click System Settings > Devices and I/O Ports > USB Configuration.

    2. Connect the device to another port. If using a USB hub, remove the hub and connect the device directly to the compute node. Make sure that the device is configured correctly for the port.

Intermittent KVM problems​

Complete the following steps until the problem is solved.

Video problems:

  1. Make sure that all cables and the console breakout cable are properly connected and secure.
  2. Make sure that the monitor is working properly by testing it on another compute node.
  3. Test the console breakout cable on a working compute node to ensure that it is operating properly. Replace the console breakout cable if it is defective.

Keyboard problems:

Make sure that all cables and the console breakout cable are properly connected and secure.

Mouse problems:

Make sure that all cables and the console breakout cable are properly connected and secure.

Intermittent unexpected reboots​

Note
Some correctable errors require that the compute node reboot so that it can disable a device, such as a memory DIMM or a processor to allow the machine to boot up properly.

Complete the following steps until the problem is solved.

  1. See the management controller event log to check for an event code that indicates a reboot. See Event logs for information about viewing the event log.