Lenovo Flex System x220, Инструкция по установке и обслуживанию

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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:
a. Make sure that the device is configured correctly (see “Using the Setup utility” on page 24).
b. Connect the device to another port. If you are 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 (see “Using the Setup utility” on page 24).
c. Run DSA Preboot USB diagnostics (see “Lenovo Dynamic System Analysis” on page 65).
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 correctly 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 working properly.
Replace the console breakout cable if it is defective.
Keyboard problems:
Make sure that all cables and the console breakout cable are correctly connected and secure.
Mouse problems:
Make sure that all cables and the console breakout cable are correctly connected and secure.
Intermittent unexpected reboots
Check for an event code that indicates a reboot. See the Flex System Manager management software or the
CMM event log to determine what actions might be required to resolve this issue. See “IMM event log” on
page 63. Some correctable errors require that the compute node be restarted so that it can disable a device,
such as a memory DIMM or a microprocessor, to allow the compute node to restart correctly.
Intermittent connectivity problems
Use this information to solve intermittent connectivity problems.
Single compute node cannot connect intermittently
Complete the following steps until the problem is solved:
1. Make sure that the network cables are correctly connected in the switch module ports and the switch
module is correctly seated.
2. Update the NIC device driver or the storage device controller device driver.
3. See the documentation for the I/O module for resolving connectivity issues.
Two or more compute nodes cannot connect intermittently
Complete the following steps until the problem is solved:
1. Using the diagnostic tools that are provided by the device manufacturer, test the I/O module that
the devices are connected to.
Chapter 6
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Troubleshooting
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