On OSX Lion, My MacBook Pro freezes with rainbow on log in screen.

When I restart or shut down the rainbow circle shows up on my log in screen. I've also noticed a slight battery life changed. My MacBook Pro is 2.4GHz Core i5. I taught the update OSX Lion 10.7.1 helped but it didn't.
Please Help. Thanks.

Yep, because unchecking the 'Automatic graphics switching' uses your AMD or GeForce graphics card instead of the low power usage Intel onboard graphics. This is why I don't use the login screen. I just automatically log in. I'd rather have Apple fix the login screen lockup in a future dot release.
To see what I mean, click on the Apple in the upper left corner of your menu bar, then 'About this Mac' then the 'More Info...' button and look at the Graphics. It should say your AMD or GeForce graphics card. When that checkbox is checked and you log in, the Graphics info should show your Intel onboard graphics card.

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    10K549
    Kernel version:
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    com.apple.driver.AppleTyMCEDriver          1.0.2d2
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    com.apple.driver.AudioIPCDriver          1.1.6
    com.apple.driver.AppleIntelYonahProfile          14
    com.apple.driver.AppleIntelPenrynProfile          17
    com.apple.driver.AppleIntelNehalemProfile          11
    com.apple.driver.AppleIntelMeromProfile          19
    com.apple.driver.ACPI_SMC_PlatformPlugin          4.7.0a1
    com.apple.GeForce          6.3.6
    com.apple.driver.AppleLPC          1.5.1
    com.apple.driver.AppleGraphicsControl          2.10.6
    com.apple.driver.AppleBacklight          170.0.46
    com.apple.kext.AppleSMCLMU          1.5.2d10
    com.apple.driver.AppleUSBTCButtons          201.6
    com.apple.driver.AppleUSBTCKeyEventDriver          201.6
    com.apple.driver.AppleUSBTCKeyboard          201.6
    com.apple.driver.AppleIRController          303.8
    com.apple.iokit.SCSITaskUserClient          2.6.8
    com.apple.driver.AppleUSBCardReader          2.6.1
    com.apple.iokit.IOAHCIBlockStorage          1.6.4
    com.apple.BootCache          31.1
    com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
    com.apple.driver.AppleSmartBatteryManager          160.0.0
    com.apple.driver.AppleFWOHCI          4.7.3
    com.apple.driver.AirPortBrcm43xx          423.91.27
    com.apple.driver.AirPortBrcm43224          428.42.4
    com.apple.driver.AppleAHCIPort          2.1.7
    com.apple.nvenet          2.0.17
    com.apple.driver.AppleUSBHub          4.2.4
    com.apple.driver.AppleUSBEHCI          4.2.4
    com.apple.driver.AppleEFINVRAM          1.4.0
    com.apple.driver.AppleRTC          1.3.1
    com.apple.driver.AppleHPET          1.5
    com.apple.driver.AppleUSBOHCI          4.2.0
    com.apple.driver.AppleACPIButtons          1.3.6
    com.apple.driver.AppleSMBIOS          1.7
    com.apple.driver.AppleACPIEC          1.3.6
    com.apple.driver.AppleAPIC          1.4
    com.apple.driver.AppleIntelCPUPowerManagementClient          142.6.0
    com.apple.security.sandbox          1
    com.apple.security.quarantine          0
    com.apple.nke.applicationfirewall          2.1.14
    com.apple.driver.AppleIntelCPUPowerManagement          142.6.0
    com.apple.driver.AppleHDAHardwareConfigDriver          2.0.5f14
    com.apple.driver.DspFuncLib          2.0.5f14
    com.apple.driver.AppleProfileReadCounterAction          17
    com.apple.driver.AppleSMBusController          1.0.10d0
    com.apple.driver.AppleProfileTimestampAction          10
    com.apple.driver.AppleProfileThreadInfoAction          14
    com.apple.driver.AppleProfileRegisterStateAction          10
    com.apple.driver.AppleProfileKEventAction          10
    com.apple.driver.AppleProfileCallstackAction          20
    com.apple.iokit.IOFireWireIP          2.0.3
    com.apple.iokit.IOSurface          74.2
    com.apple.iokit.IOBluetoothSerialManager          2.4.5f3
    com.apple.iokit.IOSerialFamily          10.0.3
    com.apple.iokit.IOAudioFamily          1.8.3fc2
    com.apple.kext.OSvKernDSPLib          1.3
    com.apple.driver.AppleHDAController          2.0.5f14
    com.apple.iokit.IOHDAFamily          2.0.5f14
    com.apple.iokit.AppleProfileFamily          41
    com.apple.driver.IOPlatformPluginFamily          4.7.0a1
    com.apple.driver.AppleSMBusPCI          1.0.10d0
    com.apple.nvidia.nv50hal          6.3.6
    com.apple.NVDAResman          6.3.6
    com.apple.driver.AppleBacklightExpert          1.0.1
    com.apple.iokit.IONDRVSupport          2.2.1
    com.apple.driver.AppleSMC          3.1.0d5
    com.apple.iokit.IOGraphicsFamily          2.2.1
    com.apple.driver.BroadcomUSBBluetoothHCIController          2.4.5f3
    com.apple.driver.AppleUSBBluetoothHCIController          2.4.5f3
    com.apple.iokit.IOBluetoothFamily          2.4.5f3
    com.apple.driver.AppleUSBMultitouch          207.7
    com.apple.iokit.IOUSBHIDDriver          4.2.0
    com.apple.iokit.IOSCSIMultimediaCommandsDevice          2.6.8
    com.apple.iokit.IOBDStorageFamily          1.6
    com.apple.iokit.IODVDStorageFamily          1.6
    com.apple.iokit.IOCDStorageFamily          1.6.1
    com.apple.iokit.IOUSBMassStorageClass          2.6.7
    com.apple.driver.AppleUSBMergeNub          4.2.4
    com.apple.driver.AppleUSBComposite          3.9.0
    com.apple.iokit.IOAHCISerialATAPI          1.2.6
    com.apple.driver.XsanFilter          402.1
    com.apple.iokit.IOFireWireSerialBusProtocolTransport          2.1.0
    com.apple.iokit.IOFireWireSBP2          4.0.6
    com.apple.iokit.IOSCSIBlockCommandsDevice          2.6.8
    com.apple.iokit.IOSCSIArchitectureModelFamily          2.6.8
    com.apple.driver.AppleFileSystemDriver          2.0
    com.apple.iokit.IOFireWireFamily          4.2.6
    com.apple.iokit.IO80211Family          320.1
    com.apple.iokit.IOAHCIFamily          2.0.6
    com.apple.iokit.IONetworkingFamily          1.10
    com.apple.iokit.IOUSBUserClient          4.2.4
    com.apple.driver.NVSMU          2.2.7
    com.apple.driver.AppleEFIRuntime          1.4.0
    com.apple.iokit.IOUSBFamily          4.2.4
    com.apple.iokit.IOHIDFamily          1.6.6
    com.apple.iokit.IOSMBusFamily          1.1
    com.apple.kext.AppleMatch          1.0.0d1
    com.apple.security.TMSafetyNet          6
    com.apple.driver.DiskImages          289
    com.apple.iokit.IOStorageFamily          1.6.3
    com.apple.driver.AppleACPIPlatform          1.3.6
    com.apple.iokit.IOPCIFamily          2.6.5
    com.apple.iokit.IOACPIFamily          1.3.0
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    Remove the battery to find your serial number in the battery bay. Then you can look your MBP up on EveryMac.com:
    http://www.everymac.com/ultimate-mac-lookup/
    That will give you all the information on your Mac.
    This is assuming that you have the MBP with the removable battery and not the unibody. The unibody has different graphic chips.
    Good luck!
    Message was edited by: S.U.

  • Since upgrading to Lion my MacBook Pro freezes randomly

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    Try these
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    http://support.apple.com/kb/ht3964
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    http://support.apple.com/kb/HT1379
    Hardware Test
    http://support.apple.com/kb/HT1509
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