Memory Problems - Lenovo Flex System x280 X6 Compute Node Installation And Service Manual

Related Links: "Using the Setup utility" on page 29
Intermittent KVM problems
Use the information in this section to troubleshoot intermittent problems with
KVMs
Malfunctioning keyboard:
Make sure that all cables and the console breakout cable are properly connected
and secure.
Malfunctioning mouse:
Make sure that all cables and the console breakout cable are properly connected
and secure.
Video problems:
1. Make sure that all cables and the console breakout cable are properly connected
2. Make sure that the monitor is working properly by testing it on another
3. Test the console breakout cable on a working compute node to ensure that it is
Intermittent unexpected reboots
Use the information in this section to troubleshoot issues with intermittent and
unexpected reboots.
Check for an event code that indicates a reboot. See the event log for the IBM Flex
System Manager management software (if installed) or see the event log of the
CMM to determine what actions might be required to resolve this issue. See IMM
event log. Some correctable errors require that the compute node reboot so that it
can disable a device, such as a memory DIMM or a microprocessor to allow the
machine to boot up properly.

Memory problems

Use this information to solve memory problems
The amount of system memory that is displayed is less than the
amount of physical memory installed in the system
1. Make sure that:
2.
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Flex System x280 X6, x480 X6, and x880 X6 Compute Node Types 7903 and 4259: Installation and Service Guide
a. Make sure that the device is configured correctly (see Using the Setup
utility).
b. 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 (see Using the Setup utility).
c. Run DSA Preboot USB diagnostics (see IBM Dynamic System Analysis).
and secure.
compute node.
operating properly. Replace the console breakout cable if it is defective.
a. You have installed the correct type of memory (see Installing a DIMM).
b. Memory mirroring or memory sparring mode does not account for the
discrepancy. You can check the memory configuration in the Setup utility
(see Using the Setup utility).