12 Replies Latest reply: Jan 7, 2015 11:15 PM by Ketsunegari
boss302beav Level 1 (65 points)

Here is the short version. I bought an older orignial Macbook Air Model A1237. The hinges had been damaged, and the screen would not display correctly - it had lines all across it and you could not see what you were doing. Anyway - I replaced the screen, hard drive, logic board, upper case, pretty much everything in sucession in an effort to get the MBA up and running again and get rid of the kernel panic I keep getting, all Apple replacement OEM parts. I bought a replacement screen - making sure I checked compatibility etc.. but when it started up I felt great perfect view - all was good - then it kernel paniced. I finally figured out that if I turned up the backlight manually all the way to max or if the ambient sensor made the backlight go to max - these were the only time I get a panic. Otherwise it runs perfeclty. The odd thing is I bought the original MBA disc that would have came with the MBA brand new - and if I wipe the hard drive and install leopard 10.5.2 from the dics and do not update anything - it works 100% perfectly no kernel panic at all. If I updgrade beyond the 10.5.2 I get the panic back. So that tells me its not the hardware, and I have confirmed the hardware and firmware are all up to date, as I was hoping it would be that easy a fix of updating the firmware.  I have tried everything - googled everything - I am at the end of my rope on this one - please help.


In addition to all the repair work - i have tried test user, upgrading to snow leopard and lion, taking to the apple store, everything I can do , with no solid answer  - the apple store told me it was hardware. But if it was then 10.5.2 should generate the panic as well.  There are lots of articles and posts on other forums on this very issue - usually surrounding having the MBA display repaired and then they started getting the panics thereafter - but no one has ever recieved an answer either at all, or that works.


Here is the KP log below - please let me know your thoughts - id like to upgrade to lion to get the most out of the MBA - any help is appreciated - - - - - heres the log - - - - ( the reason the BSD states at loginwindow is the ambient sensor at that time kicks in and creates the panic ):


Interval Since Last Panic Report:  3873 sec

Panics Since Last Report:          1

Anonymous UUID:                    3A665154-0D6B-4EDF-8F76-80C322CF134A


Mon Aug 27 23:04:07 2012

panic(cpu 0 caller 0x2E42320C): "IG: Invalid backlight duty cycle value"@/SourceCache/GraphicsDrivers/GraphicsDrivers-5.48.6/Common/GLKernel/Inte l/IntelIntegratedFramebuffer/IntelGMAX3100FB.cpp:7065

Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)

0x2e3dbaa8 : 0x12b4c6 (0x45f91c 0x2e3dbadc 0x13355c 0x0)

0x2e3dbaf8 : 0x2e42320c (0x2e431258 0xa4aa 0x2e3dbb18 0x0)

0x2e3dbb18 : 0x2e425434 (0x3af6c00 0x5f40 0xe 0x0)

0x2e3dbb68 : 0x2e4d2283 (0x3e75000 0x0 0x626b6c74 0x5f40)

0x2e3dbbd8 : 0x2e3f9769 (0x4639e00 0x4107280 0x3a6ace0 0x80)

0x2e3dbc08 : 0x2e3f724c (0x48f2a00 0x4107280 0x3a6ace0 0x80)

0x2e3dbc38 : 0x2e3f785d (0x48f2a00 0x80 0x2e3dbc68 0x3f158d)

0x2e3dbc58 : 0x2e3f71db (0x48f2a00 0x80 0x2e3dbc88 0x3f0942)

0x2e3dbc78 : 0x2e3f9475 (0x48f2a00 0x430c640 0x3a6ace0 0x80)

0x2e3dbca8 : 0x2e3f92b9 (0x48f2a00 0x430c640 0x3a6ace0 0x80)

0x2e3dbd28 : 0x440edf (0x48f2a00 0x3feb880 0x44 0x11e7de)

0x2e3dbd78 : 0x18b71a (0x48f2a00 0x3fea900 0x44 0x407c7c0)

0x2e3dbdb8 : 0x12d4d6 (0x3b92090 0x407c79c 0x2e3dbdf8 0x11f1c6)

0x2e3dbdf8 : 0x1264fa (0x3b92000 0x392e984 0x408226c 0x0)

0x2e3dbf08 : 0x198fa3 (0x2e3dbf44 0x0 0x0 0x0)

0x2e3dbfc8 : 0x1a1cfa (0x398d120 0x0 0x1a40b5 0x3dc0c80)

          Backtrace continues...

      Kernel loadable modules in backtrace (with dependencies):


            dependency: com.apple.iokit.IONDRVSupport(1.7.3)@0x2e435000

            dependency: com.apple.iokit.IOPCIFamily(2.6)@0x2e2d5000

            dependency: com.apple.iokit.IOGraphicsFamily(1.7.3)@0x2e3f5000


            dependency: com.apple.iokit.IOPCIFamily(2.6)@0x2e2d5000

            dependency: com.apple.iokit.IOGraphicsFamily(1.7.3)@0x2e3f5000

            dependency: com.apple.driver.AppleSMC(2.3.1d1)@0x2e412000

            dependency: com.apple.iokit.IOACPIFamily(1.2.0)@0x2e2ec000


            dependency: com.apple.iokit.IOPCIFamily(2.6)@0x2e2d5000


BSD process name corresponding to current thread: loginwindow


Mac OS version:



Kernel version:

Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386

System model name: MacBookAir1,1 (Mac-F42C8CC8)


System uptime in nanoseconds: 58935778708

unloaded kexts:


loaded kexts:

com.apple.driver.AppleHDAPlatformDriver          1.7.1a2 - last loaded 45739893296

com.apple.driver.InternalModemSupport          2.4.0

com.apple.iokit.IOBluetoothSerialManager          2.1.9f10

com.apple.filesystems.autofs          2.0.2

com.apple.driver.DiskImages          199

com.apple.driver.AppleHDAHardwareConfigDriver          1.7.1a2

com.apple.driver.AppleHWSensor          1.9d0

com.apple.driver.AppleUpstreamUserClient          2.7.5

com.apple.Dont_Steal_Mac_OS_X          6.0.3

com.apple.driver.AppleHDA          1.7.1a2

com.apple.driver.ApplePlatformEnabler          1.0.2d1

com.apple.driver.AppleGraphicsControl          2.8.15

com.apple.driver.AppleIntelGMAX3100          5.4.8

com.apple.iokit.IOSCSIArchitectureModelFamily          2.1.1

com.apple.driver.AppleIRController          113

com.apple.driver.AirPortBrcm43xx          367.91.22

com.apple.kext.AppleSMCLMU          1.4.5d1

com.apple.driver.AppleLPC          1.3.1

com.apple.driver.AppleTyMCEDriver          1.0.0d28

com.apple.driver.AppleHDAController          1.7.1a2

com.apple.driver.SMCMotionSensor          2.1.1d2

com.apple.driver.AudioIPCDriver          1.0.6

com.apple.driver.ACPI_SMC_PlatformPlugin          3.4.0a17

com.apple.driver.AppleBacklight          1.6.0

com.apple.driver.AppleIntelGMAX3100FB          5.4.8

com.apple.driver.AppleUSBTCButtons          1.7.4f1

com.apple.driver.AppleUSBMultitouch          189.35

com.apple.driver.AppleUSBTCKeyEventDriver          1.7.4f1

com.apple.driver.AppleUSBTCKeyboard          1.7.4f1

com.apple.driver.BroadcomUSBBluetoothHCIController          2.1.9f10

com.apple.driver.AppleUSBMergeNub          3.5.2

com.apple.driver.XsanFilter          2.7.91

com.apple.iokit.IOATABlockStorage          2.0.6

com.apple.driver.AppleUSBHub          3.4.9

com.apple.driver.AppleFileSystemDriver          1.1.0

com.apple.iokit.IOUSBUserClient          3.5.2

com.apple.driver.AppleAHCIPort          1.7.0

com.apple.driver.AppleIntelPIIXATA          2.0.1

com.apple.driver.AppleUSBEHCI          3.4.6

com.apple.driver.AppleUSBUHCI          3.5.2

com.apple.driver.AppleEFINVRAM          1.2.0

com.apple.driver.AppleRTC          1.2.3

com.apple.driver.AppleHPET          1.4

com.apple.driver.AppleSmartBatteryManager          158.10.5

com.apple.driver.AppleACPIPCI          1.2.5

com.apple.driver.AppleACPIButtons          1.2.5

com.apple.driver.AppleSMBIOS          1.4

com.apple.driver.AppleACPIEC          1.2.5

com.apple.driver.AppleAPIC          1.4

com.apple.security.seatbelt          107.12

com.apple.nke.applicationfirewall          1.8.77

com.apple.security.TMSafetyNet          3

com.apple.driver.AppleIntelCPUPowerManagement          76.2.0

com.apple.BootCache          30.4

com.apple.iokit.IOSerialFamily          9.4

com.apple.driver.DspFuncLib          1.7.1a2

com.apple.iokit.IO80211Family          216.1

com.apple.iokit.IONetworkingFamily          1.6.1

com.apple.iokit.IOHDAFamily          1.7.1a2

com.apple.iokit.IOAudioFamily          1.6.9fc5

com.apple.kext.OSvKernDSPLib          1.1

com.apple.driver.IOPlatformPluginFamily          3.4.0a17

com.apple.iokit.IONDRVSupport          1.7.3

com.apple.driver.AppleSMC          2.3.1d1

com.apple.iokit.IOGraphicsFamily          1.7.3

com.apple.iokit.IOUSBHIDDriver          3.4.6

com.apple.driver.AppleUSBBluetoothHCIController          2.1.9f10

com.apple.iokit.IOBluetoothFamily          2.1.9f10

com.apple.driver.AppleUSBComposite          3.2.0

com.apple.iokit.IOStorageFamily          1.5.6

com.apple.iokit.IOAHCIFamily          1.5.0

com.apple.iokit.IOATAFamily          2.0.1

com.apple.iokit.IOUSBFamily          3.5.2

com.apple.driver.AppleEFIRuntime          1.2.0

com.apple.iokit.IOSMBusFamily          1.1

com.apple.iokit.IOHIDFamily          1.5.5

com.apple.driver.AppleACPIPlatform          1.2.5

com.apple.iokit.IOACPIFamily          1.2.0

com.apple.iokit.IOPCIFamily          2.6

MacBook Air, Mac OS X (10.5.8), 1.6Ghz Intel Core 2 Duo 2gb RAM