Intermittent KVM problemsComplete 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 rebootsNote: Some correctable errors require that the server reboot so that it can disable a device, such as amemory DIMM or a processor to allow the machine to boot up properly.1. If the reset occurs during POST and the POST watchdog timer is enabled, make sure that sufficient timeis allowed in the watchdog timeout value (POST Watchdog Timer).To check the POST watchdog time, restart the server and press F1 to display the Lenovo XClarityProvisioning Manager system setup interface. Then, click BMC Settings ➙ POST Watchdog Timer.2. If the reset occurs after the operating system starts, disable any automatic server restart (ASR) utilities,such as the Automatic Server Restart IPMI Application for Windows, or any ASR devices that areinstalled.3. See the management controller event log to check for an event code that indicates a reboot. See “Eventlogs” on page 143 for information about viewing the event log.Power problemsUse this information to resolve issues related to power.System error LED is on and event log "Power supply has lost input" is displayedTo resolve the problem, ensure that:1. The power supply is properly connected to a power cord.2. The power cord is connected to a properly grounded electrical outlet for the server.Network problemsUse this information to resolve issues related to networking.• “Cannot wake server using Wake on LAN” on page 156• “Could not log in using LDAP account with SSL enabled” on page 157Cannot wake server using Wake on LANComplete the following steps until the problem is resolved:156 ThinkSystem SR630 Maintenance Manual
