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Ifyouconfiguredtheadapterforfullduplex,makesurethattheswitchportalsoisconfiguredforfull
duplex.Settingwrongduplexmodecandegradeperformance,causedataloss,orresultinlost
connections.
–Youhaveinstalledallnetworkingsoftwarethatisnecessaryforyournetworkenvironment.
CheckwithyourLANadministratorforthenecessarynetworkingsoftware.
•Problem:Theadapterstopsworkingfornoapparentreason.
Solution:Thenetworkdriverfilesmightbecorruptormissing.Updatethedriverbyreferringtothe
previoussolutionfortheproceduretomakesurethatthecorrectdevicedriverisinstalled.
•Problem:MycomputerisaGigabitEthernetmodelandIuseaspeedof1000Mbps,buttheconnection
failsorerrorsoccur.
Solution:
–UseCategory5wiringandmakesurethatthenetworkcableissecurelyconnected.
–Connecttoa1000BASE-Thub/switch(not1000BASE-X).
•Problem:TheWakeonLANfeatureisnotworking.
Solution:EnsurethatWakeonLANisenabledinThinkPadSetup.Ifitis,checkwithyourLAN
administratorforthenecessarysettings.
•Problem:MycomputerisaGigabitEthernetmodel,butthecomputercannotconnecttothenetworkat
1000Mbps.Instead,itconnectsat100Mbps.
Solution:
–Tryanothercable.
–Makesurethatthelinkpartnerissettoauto-negotiate.
–Makesurethattheswitchis802.3ab-compliant(gigabitovercopper).
Awireless-LANproblem
Problem:Icannotconnecttothenetworkusingthebuilt-inwirelessnetworkcard.
Solution:Makesurethat:
•TheAirplanemodeisoff.
•Yourwireless-LANdriveristhelatestversion.
•Yourcomputeriswithinrangeofawirelessaccesspoint.
•Thewirelessradioisenabled.
Note:IfyouareusingtheWindows7operatingsystem,clickShowhiddeniconsonthetaskbar.The
AccessConnectionsiconisdisplayed.Formoreinformationabouttheicon,refertotheAccessConnections
helpinformationsystem.
FortheWindows7operatingsystem,checktheNetworkName(SSID)andyourencryptioninformation.Use
theAccessConnectionsprogramtoverifythiscase-sensitiveinformation.
Bluetoothproblems
Note:CheckyourconnectionanytimeandmakesurethatnootherBluetooth-enableddeviceissearchingfor
thedevicetowhichyouwanttoconnect.SimultaneoussearchingisnotallowedintheBluetoothconnection.
•Problem:SounddoesnotcomefromtheBluetoothheadset/headphonebutcomesfromthelocal
speakereventhoughtheBluetoothheadset/headphoneisconnectedusingaHeadsetprofileorAVprofile.
Chapter7.Troubleshootingproblems83
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