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5
Troubleshooting and Repair
79
Sensor alarm troubleshooting
Table 38
on page 96 lists the IPMI managed sensors for the CPM. The table also provides sensor
descriptions and threshold values, discrete values, or reported states that might cause the IPMC to
generate an alarm or perform some other action. You can use a reported value or state of a managed
sensor to troubleshoot problems in the CPM. The managed sensor name, address, and description
provide a starting point for isolating a board problem.
The login prompt does not appear
after BIOS has booted.
• Verify the serial cable is plugged into both the CPM and the system with the serial connection.
• Verify the CPM is inserted into one of the shelf’s node slots.
• Verify the terminal emulation application is set to 115200 bps, no parity, 8 data bits, 1 stop bit, with
no flow control.
• Verify the default Linux port speed has not been changed in the
/boot/grub/grub.conf
or
/etc/inittab
file.
Message: Operating system not
found.
• Make sure an operating system is present on the selected boot media.
• Verify the correct device is first in the list in the BIOS boot menu.
• Verify that an appropriate network link is available between the CPM and the network boot device.
Table 18. Troubleshooting actions based on symptoms (continued)
Symptom
Recommendation