Hi,
I´m having problems that my iMac 27" (Mid 2011) restarts very often when I use Thunderbolt Display Mode with that and my 13" Retina (Late 2012).
This happend very often after a while with usage, where I get to display and initilize Thunderbolt Display Mode on both screens.
Here´s the error message I got yesterday on this:
Anonymous UUID: 0F3B6E53-C635-55BC-4240-AB24ADB34253
Wed Jul 9 00:00:51 2014
panic(cpu 0 caller 0xffffff802d254ca4): "a freed zone element has been modified: expected 0xffffff80443a3c00 but found 0xffffff8044393c00, bits changed 0x30000, at offset 0 of 128 in zone: kalloc.128"@/SourceCache/xnu/xnu-2422.110.17/osfmk/kern/zalloc.c:461
Backtrace (CPU 0), Frame : Return Address
0xffffff8139f9b030 : 0xffffff802d222f79
0xffffff8139f9b0b0 : 0xffffff802d254ca4
0xffffff8139f9b0f0 : 0xffffff802d25273d
0xffffff8139f9b150 : 0xffffff802d251dc9
0xffffff8139f9b250 : 0xffffff802d22aa3f
0xffffff8139f9b280 : 0xffffff802d29af75
0xffffff8139f9b2c0 : 0xffffff802d29bb5e
0xffffff8139f9b630 : 0xffffff802d29b95f
0xffffff8139f9b710 : 0xffffff802d6bc2e9
0xffffff8139f9b810 : 0xffffff802d6bc58e
0xffffff8139f9b840 : 0xffffff7fad7f8278
0xffffff8139f9b900 : 0xffffff802d40dcae
0xffffff8139f9b960 : 0xffffff802d3c562c
0xffffff8139f9ba60 : 0xffffff802d400826
0xffffff8139f9bab0 : 0xffffff802d3c7dc6
0xffffff8139f9bb10 : 0xffffff802d5713c1
0xffffff8139f9bb60 : 0xffffff802d400896
0xffffff8139f9bbb0 : 0xffffff802d40796c
0xffffff8139f9bca0 : 0xffffff802d404177
0xffffff8139f9bd40 : 0xffffff802d406b4e
0xffffff8139f9bd90 : 0xffffff802d58385f
0xffffff8139f9bdc0 : 0xffffff802d577e30
0xffffff8139f9be70 : 0xffffff802d3fab66
0xffffff8139f9bea0 : 0xffffff802d3e51d3
0xffffff8139f9bed0 : 0xffffff802d3de50a
0xffffff8139f9bf40 : 0xffffff802d3e5177
0xffffff8139f9bf50 : 0xffffff802d640a33
0xffffff8139f9bfb0 : 0xffffff802d2f3f46
Kernel Extensions in backtrace:
com.apple.iokit.IOStorageFamily(1.9)[9B09B065-7F11-3241-B194-B72E5C23548B]@0xffffff7fad7ec000->0xffffff7fad810fff
BSD process name corresponding to current thread: launchd
Mac OS version:
13E28
Kernel version:
Darwin Kernel Version 13.3.0: Tue Jun 3 21:27:35 PDT 2014; root:xnu-2422.110.17~1/RELEASE_X86_64
Kernel UUID: BBFADD17-672B-35A2-9B7F-E4B12213E4B8
Kernel slide: 0x000000002d000000
Kernel text base: 0xffffff802d200000
System model name: iMac12,2 (Mac-942B59F58194171B)
System uptime in nanoseconds: 121083018432168
last loaded kext at 120030803031862: com.apple.driver.AppleIntelMCEReporter 104 (addr 0xffffff7fafaa7000, size 49152)
last unloaded kext at 120142689306977: com.motu.driver.MicroBookAudio 1.6 52865 (addr 0xffffff7fafa84000, size 90112)
loaded kexts:
org.pqrs.driver.KeyRemap4MacBook 9.3.0
com.paceap.kext.pacesupport.snowleopard 5.8
com.Cycling74.driver.Soundflower 1.6.6
com.logmein.driver.LogMeInSoundDriver 1.0.3
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AGPM 100.14.28
com.apple.filesystems.autofs 3.0
com.apple.driver.AppleMikeyHIDDriver 124
com.apple.driver.AppleHDA 2.6.3f4
com.apple.driver.AppleMikeyDriver 2.6.3f4
com.apple.driver.AppleUpstreamUserClient 3.5.13
com.apple.kext.AMDFramebuffer 1.2.4
com.apple.AMDRadeonX3000 1.2.4
com.apple.driver.AppleSMCLMU 2.0.4d1
com.apple.driver.AppleIntelHD3000Graphics 8.2.4
com.apple.kext.AMD6000Controller 1.2.4
com.apple.driver.AppleBacklight 170.3.5
com.apple.driver.AppleMCCSControl 1.2.5
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.2.6f1
com.apple.driver.AppleIntelSNBGraphicsFB 8.2.4
com.apple.driver.AppleSMCPDRC 1.0.0
com.apple.driver.AudioAUUC 1.60
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleLPC 1.7.0
com.apple.driver.AppleThunderboltIP 1.1.2
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.iokit.IOBluetoothSerialManager 4.2.6f1
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleHWAccess 1
com.apple.driver.AppleIRController 325.7
com.apple.iokit.SCSITaskUserClient 3.6.6
com.apple.driver.AppleUSBCardReader 3.4.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeLZVN 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 35
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.6.0
com.apple.driver.AppleUSBHub 683.4.0
com.apple.iokit.AppleBCM5701Ethernet 3.8.1b2
com.apple.driver.AirPort.Atheros40 700.74.5
com.apple.driver.AppleUSBEHCI 660.4.0
com.apple.driver.AppleFWOHCI 5.0.2
com.apple.driver.AppleAHCIPort 3.0.5
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleACPIButtons 2.0
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 2.0
com.apple.driver.AppleAPIC 1.7
com.apple.driver.AppleIntelCPUPowerManagementClient 217.92.1
com.apple.nke.applicationfirewall 153
com.apple.security.quarantine 3
com.apple.driver.AppleIntelCPUPowerManagement 217.92.1
com.apple.kext.triggers 1.0
com.apple.driver.DspFuncLib 2.6.3f4
com.apple.vecLib.kext 1.0.0
com.apple.iokit.IOAcceleratorFamily 98.22
com.apple.kext.AMDSupport 1.2.4
com.apple.AppleGraphicsDeviceControl 3.6.22
com.apple.iokit.IOFireWireIP 2.2.6
com.apple.driver.AppleThunderboltEDMSink 2.1.3
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.iokit.IONDRVSupport 2.4.1
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.2.6f1
com.apple.driver.AppleSMBusController 1.0.12d1
com.apple.driver.AppleSMBusPCI 1.0.12d1
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.IOPlatformPluginFamily 5.7.1d6
com.apple.driver.AppleHDAController 2.6.3f4
com.apple.iokit.IOHDAFamily 2.6.3f4
com.apple.iokit.IOAudioFamily 1.9.7fc2
com.apple.kext.OSvKernDSPLib 1.14
com.apple.iokit.IOSurface 91.1
com.apple.iokit.IOGraphicsFamily 2.4.1
com.apple.iokit.IOSerialFamily 10.0.7
com.apple.iokit.IOBluetoothFamily 4.2.6f1
com.apple.driver.AppleSMC 3.1.8
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.6.6
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.iokit.IOAHCISerialATAPI 2.6.1
com.apple.driver.AppleThunderboltDPInAdapter 3.1.7
com.apple.driver.AppleThunderboltDPOutAdapter 3.1.7
com.apple.driver.AppleThunderboltDPAdapterFamily 3.1.7
com.apple.driver.AppleThunderboltPCIDownAdapter 1.4.5
com.apple.iokit.IOUSBHIDDriver 660.4.0
com.apple.iokit.IOSCSIBlockCommandsDevice 3.6.6
com.apple.iokit.IOUSBMassStorageClass 3.6.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.6.6
com.apple.driver.AppleUSBMergeNub 650.4.0
com.apple.driver.AppleUSBComposite 656.4.1
com.apple.iokit.IOUSBUserClient 660.4.2
com.apple.driver.AppleThunderboltNHI 2.0.1
com.apple.iokit.IOThunderboltFamily 3.3.1
com.apple.iokit.IOEthernetAVBController 1.0.3b4
com.apple.driver.mDNSOffloadUserClient 1.0.1b5
com.apple.iokit.IO80211Family 640.36
com.apple.iokit.IONetworkingFamily 3.2
com.apple.iokit.IOFireWireFamily 4.5.5
com.apple.iokit.IOAHCIFamily 2.6.5
com.apple.iokit.IOUSBFamily 683.4.0
com.apple.driver.AppleEFINVRAM 2.0
com.apple.driver.AppleEFIRuntime 2.0
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 278.11.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.AppleKeyStore 2
com.apple.driver.DiskImages 371.1
com.apple.iokit.IOStorageFamily 1.9
com.apple.iokit.IOReportFamily 23
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 2.0
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.pthread 1
com.apple.kec.corecrypto 1.0
Kan ikke samle informasjon om systemkonfigurasjonenModel: iMac12,2, BootROM IM121.0047.B1F, 4 processors, Intel Core i5, 3.1 GHz, 8 GB, SMC 1.72f1
Graphics: AMD Radeon HD 6970M, AMD Radeon HD 6970M, PCIe, 1024 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1333 MHz, 0x859B, 0x435435313236344243313333392E4D313646
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1333 MHz, 0x859B, 0x435435313236344243313333392E4D313646
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x9A), Atheros 9380: 4.0.74.0-P2P
Bluetooth: Version 4.2.6f1 14216, 3 services, 23 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: WDC WD1001FALS-403AA0, 1 TB
Serial ATA Device: HL-DT-STDVDRW GA32N
USB Device: Hub
USB Device: USB 2.0 Hub [MTT]
USB Device: MicroBook
USB Device: Keyboard Hub
USB Device: Apple Keyboard
USB Device: Evoluent VerticalMouse 3
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: Internal Memory Card Reader
USB Device: IR Receiver
Thunderbolt Bus: iMac, Apple Inc., 22.1
Thunderbolt Device: Macintosh, Apple Inc.
Any idea on what might be the problem? Both computers running Mavericks OSX.
I´m having problems that my iMac 27" (Mid 2011) restarts very often when I use Thunderbolt Display Mode with that and my 13" Retina (Late 2012).
This happend very often after a while with usage, where I get to display and initilize Thunderbolt Display Mode on both screens.
Here´s the error message I got yesterday on this:
Anonymous UUID: 0F3B6E53-C635-55BC-4240-AB24ADB34253
Wed Jul 9 00:00:51 2014
panic(cpu 0 caller 0xffffff802d254ca4): "a freed zone element has been modified: expected 0xffffff80443a3c00 but found 0xffffff8044393c00, bits changed 0x30000, at offset 0 of 128 in zone: kalloc.128"@/SourceCache/xnu/xnu-2422.110.17/osfmk/kern/zalloc.c:461
Backtrace (CPU 0), Frame : Return Address
0xffffff8139f9b030 : 0xffffff802d222f79
0xffffff8139f9b0b0 : 0xffffff802d254ca4
0xffffff8139f9b0f0 : 0xffffff802d25273d
0xffffff8139f9b150 : 0xffffff802d251dc9
0xffffff8139f9b250 : 0xffffff802d22aa3f
0xffffff8139f9b280 : 0xffffff802d29af75
0xffffff8139f9b2c0 : 0xffffff802d29bb5e
0xffffff8139f9b630 : 0xffffff802d29b95f
0xffffff8139f9b710 : 0xffffff802d6bc2e9
0xffffff8139f9b810 : 0xffffff802d6bc58e
0xffffff8139f9b840 : 0xffffff7fad7f8278
0xffffff8139f9b900 : 0xffffff802d40dcae
0xffffff8139f9b960 : 0xffffff802d3c562c
0xffffff8139f9ba60 : 0xffffff802d400826
0xffffff8139f9bab0 : 0xffffff802d3c7dc6
0xffffff8139f9bb10 : 0xffffff802d5713c1
0xffffff8139f9bb60 : 0xffffff802d400896
0xffffff8139f9bbb0 : 0xffffff802d40796c
0xffffff8139f9bca0 : 0xffffff802d404177
0xffffff8139f9bd40 : 0xffffff802d406b4e
0xffffff8139f9bd90 : 0xffffff802d58385f
0xffffff8139f9bdc0 : 0xffffff802d577e30
0xffffff8139f9be70 : 0xffffff802d3fab66
0xffffff8139f9bea0 : 0xffffff802d3e51d3
0xffffff8139f9bed0 : 0xffffff802d3de50a
0xffffff8139f9bf40 : 0xffffff802d3e5177
0xffffff8139f9bf50 : 0xffffff802d640a33
0xffffff8139f9bfb0 : 0xffffff802d2f3f46
Kernel Extensions in backtrace:
com.apple.iokit.IOStorageFamily(1.9)[9B09B065-7F11-3241-B194-B72E5C23548B]@0xffffff7fad7ec000->0xffffff7fad810fff
BSD process name corresponding to current thread: launchd
Mac OS version:
13E28
Kernel version:
Darwin Kernel Version 13.3.0: Tue Jun 3 21:27:35 PDT 2014; root:xnu-2422.110.17~1/RELEASE_X86_64
Kernel UUID: BBFADD17-672B-35A2-9B7F-E4B12213E4B8
Kernel slide: 0x000000002d000000
Kernel text base: 0xffffff802d200000
System model name: iMac12,2 (Mac-942B59F58194171B)
System uptime in nanoseconds: 121083018432168
last loaded kext at 120030803031862: com.apple.driver.AppleIntelMCEReporter 104 (addr 0xffffff7fafaa7000, size 49152)
last unloaded kext at 120142689306977: com.motu.driver.MicroBookAudio 1.6 52865 (addr 0xffffff7fafa84000, size 90112)
loaded kexts:
org.pqrs.driver.KeyRemap4MacBook 9.3.0
com.paceap.kext.pacesupport.snowleopard 5.8
com.Cycling74.driver.Soundflower 1.6.6
com.logmein.driver.LogMeInSoundDriver 1.0.3
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AGPM 100.14.28
com.apple.filesystems.autofs 3.0
com.apple.driver.AppleMikeyHIDDriver 124
com.apple.driver.AppleHDA 2.6.3f4
com.apple.driver.AppleMikeyDriver 2.6.3f4
com.apple.driver.AppleUpstreamUserClient 3.5.13
com.apple.kext.AMDFramebuffer 1.2.4
com.apple.AMDRadeonX3000 1.2.4
com.apple.driver.AppleSMCLMU 2.0.4d1
com.apple.driver.AppleIntelHD3000Graphics 8.2.4
com.apple.kext.AMD6000Controller 1.2.4
com.apple.driver.AppleBacklight 170.3.5
com.apple.driver.AppleMCCSControl 1.2.5
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.2.6f1
com.apple.driver.AppleIntelSNBGraphicsFB 8.2.4
com.apple.driver.AppleSMCPDRC 1.0.0
com.apple.driver.AudioAUUC 1.60
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleLPC 1.7.0
com.apple.driver.AppleThunderboltIP 1.1.2
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.iokit.IOBluetoothSerialManager 4.2.6f1
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleHWAccess 1
com.apple.driver.AppleIRController 325.7
com.apple.iokit.SCSITaskUserClient 3.6.6
com.apple.driver.AppleUSBCardReader 3.4.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeLZVN 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 35
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.6.0
com.apple.driver.AppleUSBHub 683.4.0
com.apple.iokit.AppleBCM5701Ethernet 3.8.1b2
com.apple.driver.AirPort.Atheros40 700.74.5
com.apple.driver.AppleUSBEHCI 660.4.0
com.apple.driver.AppleFWOHCI 5.0.2
com.apple.driver.AppleAHCIPort 3.0.5
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleACPIButtons 2.0
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 2.0
com.apple.driver.AppleAPIC 1.7
com.apple.driver.AppleIntelCPUPowerManagementClient 217.92.1
com.apple.nke.applicationfirewall 153
com.apple.security.quarantine 3
com.apple.driver.AppleIntelCPUPowerManagement 217.92.1
com.apple.kext.triggers 1.0
com.apple.driver.DspFuncLib 2.6.3f4
com.apple.vecLib.kext 1.0.0
com.apple.iokit.IOAcceleratorFamily 98.22
com.apple.kext.AMDSupport 1.2.4
com.apple.AppleGraphicsDeviceControl 3.6.22
com.apple.iokit.IOFireWireIP 2.2.6
com.apple.driver.AppleThunderboltEDMSink 2.1.3
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.iokit.IONDRVSupport 2.4.1
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.2.6f1
com.apple.driver.AppleSMBusController 1.0.12d1
com.apple.driver.AppleSMBusPCI 1.0.12d1
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.IOPlatformPluginFamily 5.7.1d6
com.apple.driver.AppleHDAController 2.6.3f4
com.apple.iokit.IOHDAFamily 2.6.3f4
com.apple.iokit.IOAudioFamily 1.9.7fc2
com.apple.kext.OSvKernDSPLib 1.14
com.apple.iokit.IOSurface 91.1
com.apple.iokit.IOGraphicsFamily 2.4.1
com.apple.iokit.IOSerialFamily 10.0.7
com.apple.iokit.IOBluetoothFamily 4.2.6f1
com.apple.driver.AppleSMC 3.1.8
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.6.6
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.iokit.IOAHCISerialATAPI 2.6.1
com.apple.driver.AppleThunderboltDPInAdapter 3.1.7
com.apple.driver.AppleThunderboltDPOutAdapter 3.1.7
com.apple.driver.AppleThunderboltDPAdapterFamily 3.1.7
com.apple.driver.AppleThunderboltPCIDownAdapter 1.4.5
com.apple.iokit.IOUSBHIDDriver 660.4.0
com.apple.iokit.IOSCSIBlockCommandsDevice 3.6.6
com.apple.iokit.IOUSBMassStorageClass 3.6.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.6.6
com.apple.driver.AppleUSBMergeNub 650.4.0
com.apple.driver.AppleUSBComposite 656.4.1
com.apple.iokit.IOUSBUserClient 660.4.2
com.apple.driver.AppleThunderboltNHI 2.0.1
com.apple.iokit.IOThunderboltFamily 3.3.1
com.apple.iokit.IOEthernetAVBController 1.0.3b4
com.apple.driver.mDNSOffloadUserClient 1.0.1b5
com.apple.iokit.IO80211Family 640.36
com.apple.iokit.IONetworkingFamily 3.2
com.apple.iokit.IOFireWireFamily 4.5.5
com.apple.iokit.IOAHCIFamily 2.6.5
com.apple.iokit.IOUSBFamily 683.4.0
com.apple.driver.AppleEFINVRAM 2.0
com.apple.driver.AppleEFIRuntime 2.0
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 278.11.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.AppleKeyStore 2
com.apple.driver.DiskImages 371.1
com.apple.iokit.IOStorageFamily 1.9
com.apple.iokit.IOReportFamily 23
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 2.0
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.pthread 1
com.apple.kec.corecrypto 1.0
Kan ikke samle informasjon om systemkonfigurasjonenModel: iMac12,2, BootROM IM121.0047.B1F, 4 processors, Intel Core i5, 3.1 GHz, 8 GB, SMC 1.72f1
Graphics: AMD Radeon HD 6970M, AMD Radeon HD 6970M, PCIe, 1024 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1333 MHz, 0x859B, 0x435435313236344243313333392E4D313646
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1333 MHz, 0x859B, 0x435435313236344243313333392E4D313646
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x9A), Atheros 9380: 4.0.74.0-P2P
Bluetooth: Version 4.2.6f1 14216, 3 services, 23 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: WDC WD1001FALS-403AA0, 1 TB
Serial ATA Device: HL-DT-STDVDRW GA32N
USB Device: Hub
USB Device: USB 2.0 Hub [MTT]
USB Device: MicroBook
USB Device: Keyboard Hub
USB Device: Apple Keyboard
USB Device: Evoluent VerticalMouse 3
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: Internal Memory Card Reader
USB Device: IR Receiver
Thunderbolt Bus: iMac, Apple Inc., 22.1
Thunderbolt Device: Macintosh, Apple Inc.
Any idea on what might be the problem? Both computers running Mavericks OSX.