Lenovo System x3550 M4 - Intermittent Problems; Keyboard, Mouse, or USB-Device Problems

•FollowthesuggestedactionsintheorderinwhichtheyarelistedintheActioncolumnuntiltheproblemis
solved.
•Ifanactionstepisprecededby“(Trainedtechnicianonly),”thatstepmustbeperformedonlybyatrained
technician.
•Gotothesupportwebsiteathttp://www.lenovo.com/supporttocheckfortechnicalinformation,hints,tips,
andnewdevicedriversortosubmitarequestforinformation.
SymptomAction
Ifanoptionalembedded
hypervisorflashdeviceisnot
listedintheexpectedboot
order,doesnotappearinthe
listofbootdevices,orasimilar
problemhasoccurred.
1.Makesurethattheoptionalembeddedhypervisorflashdeviceisselectedon
thebootmanager<F12>SelectBootDeviceatstartup.
2.Makesurethattheembeddedhypervisorflashdeviceisseatedintheconnector
correctly(see“RemovingaUSBembeddedhypervisorflashdevice”onpage
268and“ReplacingaUSBembeddedhypervisorflashdevice”onpage268).
3.Seethedocumentationthatcomeswiththeoptionalembeddedhypervisor
flashdeviceforsetupandconfigurationinformation.
4.Makesurethatothersoftwareworksontheserver.
Intermittentproblems
Usethisinformationtosolveintermittentproblems.
•FollowthesuggestedactionsintheorderinwhichtheyarelistedintheActioncolumnuntiltheproblemis
solved.
•Ifanactionstepisprecededby“(Trainedtechnicianonly),”thatstepmustbeperformedonlybyatrained
technician.
•Gotothesupportwebsiteathttp://www.lenovo.com/supporttocheckfortechnicalinformation,hints,tips,
andnewdevicedriversortosubmitarequestforinformation.
SymptomAction
Aproblemoccursonly
occasionallyandisdifficultto
diagnose.
1.Makesurethat:
•Allcablesandcordsareconnectedsecurelytotherearoftheserverand
attacheddevices.
•Whentheserveristurnedon,airisflowingfromthefangrille.Ifthereis
noairflow,thefanisnotworking.Thiscancausetheservertooverheat
andshutdown.
2.Checkthesystem-errorlogorIMMeventlogs(see“Eventlogs”onpage133).
Theserverresets(restarts)
occasionally.
1.IftheresetoccursduringPOSTandthePOSTwatchdogtimerisenabled(click
SystemSettings➙Recovery➙SystemRecovery➙POSTWatchdogTimer
intheSetuputilitytoseethePOSTwatchdogsetting),makesurethatsufficient
timeisallowedinthewatchdogtimeoutvalue(POSTWatchdogTimer).Ifthe
servercontinuestoresetduringPOST,seeAppendixB“UEFI/POSTdiagnostic
codes”onpage791
andAppendixC“DSAdiagnostictestresults”onpage815.
2.Ifneitherconditionapplies,checkthesystem-errorlogorIMMsystem-event
log(see“Eventlogs”onpage133).
Keyboard,mouse,orUSB-deviceproblems
Usethisinformationtosolvekeyboard,mouse,orUSB-deviceproblems.
142Systemx3550M4InstallationandServiceGuide