Greg Mckay

Q: Kernel Panic - intermittent

I have a late 2012 27" iMac running 10.10.4.

 

For the last few months I have been getting intermittent shutdown, with the "Your computer was shutdown due to a problem" message.

 

My iMac runs from around 09:00 til maybe 22:00 on most days.

 

The weird thing is, these shutdowns have NEVER occurred during the day - and always occur roughly between the evening hours of say, 17:30 til 19:45.

 

It will happen, roughly 2 or 3 nights out of 5. Sometimes more, and sometimes, not for a week. It has only happened while I have not been doing any activity on the computer. That is, it isn't "while I'm doing 'such and such' " - I'm never doing anything - it just shuts down, out of the blue.

 

I thought it may have been an electricity company power surge during evening peak hour? However my wife's iMac doesn't do it, and we don't ever notice a flicker of the house lights or anything.

 

I've unplugged all peripherals - still does it.

 

I have made no software installs which coincide with the time this all started.

 

This is the most recent "Send to Apple" report - (I'm curious about the "oxdeadbeefdeadbeef" text  - what the heck is that?)

 

Any thoughts?

 

Anonymous UUID:       01A24045-FF78-7831-C45F-ABF68034270A

 

Fri Jul 10 19:35:47 2015

 

*** Panic Report ***

panic(cpu 4 caller 0xffffff800136bf28): "a freed zone element has been modified in zone kalloc.128: expected 0xdeadbeefdeadbeef but found 0xffffff8060262dd0, bits changed 0x2152416fbe8b933f, at offset 88 of 128 in element 0xffffff803b93af00, cookies 0x3f00114a01e85b08 0x53521d9195696cd"@/SourceCache/xnu/xnu-2782.30.5/osfmk/kern/zalloc.c:496

Backtrace (CPU 4), Frame : Return Address

0xffffff83c3bdb130 : 0xffffff800132bda1

0xffffff83c3bdb1b0 : 0xffffff800136bf28

0xffffff83c3bdb2e0 : 0xffffff80017c53c4

0xffffff83c3bdb570 : 0xffffff8001571f03

0xffffff83c3bdb5e0 : 0xffffff80017adc2d

0xffffff83c3bdbf50 : 0xffffff800184bc56

0xffffff83c3bdbfb0 : 0xffffff8001435376

 

BSD process name corresponding to current thread: nsurlstoraged

 

Mac OS version:

14E46

 

Kernel version:

Darwin Kernel Version 14.4.0: Thu May 28 11:35:04 PDT 2015; root:xnu-2782.30.5~1/RELEASE_X86_64

Kernel UUID: E3C26B2F-8B97-3F1D-B193-690F7E34F830

Kernel slide:     0x0000000001000000

Kernel text base: 0xffffff8001200000

__HIB  text base: 0xffffff8001100000

System model name: iMac13,2 (Mac-FC02E91DDD3FA6A4)

 

System uptime in nanoseconds: 31720485915505

last loaded kext at 1243782604726: com.apple.filesystems.smbfs 3.0.1 (addr 0xffffff7f8425c000, size 389120)

last unloaded kext at 329179890260: com.apple.filesystems.msdosfs 1.10 (addr 0xffffff7f8425c000, size 61440)

loaded kexts:

com.symantec.kext.SymAPComm 12.7.1f4

com.symantec.kext.fw 5.3.1f4

com.Cycling74.driver.Soundflower 1.5.1

com.eltima.SyncMate.kext 0.2.5b15

com.symantec.kext.ips 3.10.2f23

com.symantec.kext.pf 5.7.1f4

com.symantec.kext.internetSecurity 5.4f4

com.apple.filesystems.smbfs 3.0.1

com.apple.driver.AppleBluetoothMultitouch 85.3

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.driver.AudioAUUC 1.70

com.apple.iokit.IOUserEthernet 1.0.1

com.apple.iokit.IOBluetoothSerialManager 4.3.5f8

com.apple.driver.ApplePlatformEnabler 2.2.0d4

com.apple.driver.AGPM 110.19.6

com.apple.driver.X86PlatformShim 1.0.0

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AppleHWAccess 1

com.apple.driver.AppleHV 1

com.apple.filesystems.autofs 3.0

com.apple.driver.AppleMikeyHIDDriver 124

com.apple.driver.AppleOSXWatchdog 1

com.apple.driver.AppleMikeyDriver 272.18.1

com.apple.driver.AppleHDA 272.18.1

com.apple.driver.AppleUpstreamUserClient 3.6.1

com.apple.GeForce 10.0.4

com.apple.driver.AppleThunderboltIP 2.0.2

com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0

com.apple.driver.AppleBacklight 170.7.4

com.apple.driver.AppleMCCSControl 1.2.12

com.apple.driver.AppleSMCLMU 2.0.7d0

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.5f8

com.apple.driver.AppleLPC 1.7.3

com.apple.driver.AppleIntelHD4000Graphics 10.0.6

com.apple.driver.AppleIntelFramebufferCapri 10.0.6

com.apple.iokit.IOUSBAttachedSCSI 1.1.1

com.apple.driver.AppleUSBHub 705.4.2

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0

com.apple.BootCache 36

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCIBlockStorage 2.7.1

com.apple.driver.AppleSDXC 1.6.5

com.apple.iokit.AppleBCM5701Ethernet 10.1.3

com.apple.driver.AirPort.Brcm4360 930.37.3

com.apple.driver.AppleAHCIPort 3.1.2

com.apple.driver.AppleUSBEHCI 705.4.14

com.apple.driver.AppleUSBXHCI 710.4.11

com.apple.driver.AppleACPIButtons 3.1

com.apple.driver.AppleRTC 2.0

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleSMBIOS 2.1

com.apple.driver.AppleACPIEC 3.1

com.apple.driver.AppleAPIC 1.7

com.apple.driver.AppleIntelCPUPowerManagementClient 218.0.0

com.apple.nke.applicationfirewall 161

com.apple.security.quarantine 3

com.apple.security.TMSafetyNet 8

com.apple.driver.AppleIntelCPUPowerManagement 218.0.0

com.apple.driver.AppleBluetoothHIDKeyboard 176.2

com.apple.driver.AppleHIDKeyboard 176.2

com.apple.driver.IOBluetoothHIDDriver 4.3.5f8

com.apple.driver.AppleMultitouchDriver 264.6

com.apple.iokit.IOSerialFamily 11

com.apple.kext.triggers 1.0

com.apple.driver.DspFuncLib 272.18.1

com.apple.kext.OSvKernDSPLib 1.15

com.apple.nvidia.driver.NVDAGK100Hal 10.0.4

com.apple.nvidia.driver.NVDAResman 10.0.4

com.apple.driver.AppleThunderboltEDMSink 4.0.3

com.apple.iokit.IOUSBUserClient 705.4.0

com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0

com.apple.driver.X86PlatformPlugin 1.0.0

com.apple.driver.AppleBacklightExpert 1.1.0

com.apple.driver.AppleSMBusController 1.0.13d1

com.apple.driver.AppleSMC 3.1.9

com.apple.driver.AppleSMBusPCI 1.0.12d1

com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.5f8

com.apple.iokit.IOBluetoothFamily 4.3.5f8

com.apple.driver.AppleHDAController 272.18.1

com.apple.iokit.IOHDAFamily 272.18.1

com.apple.iokit.IOAudioFamily 203.3

com.apple.vecLib.kext 1.2.0

com.apple.driver.IOPlatformPluginFamily 5.9.1d7

com.apple.iokit.IOSurface 97.4

com.apple.iokit.IONDRVSupport 2.4.1

com.apple.iokit.IOAcceleratorFamily2 156.16

com.apple.AppleGraphicsDeviceControl 3.10.24

com.apple.iokit.IOGraphicsFamily 2.4.1

com.apple.iokit.IOSCSIBlockCommandsDevice 3.7.5

com.apple.iokit.IOUSBMassStorageClass 3.7.2

com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.5

com.apple.iokit.IOUSBHIDDriver 705.4.0

com.apple.driver.AppleUSBMergeNub 705.4.0

com.apple.driver.AppleUSBComposite 705.4.9

com.apple.driver.AppleThunderboltDPInAdapter 4.0.6

com.apple.driver.AppleThunderboltDPOutAdapter 4.0.6

com.apple.driver.AppleThunderboltDPAdapterFamily 4.0.6

com.apple.driver.AppleThunderboltPCIUpAdapter 2.0.2

com.apple.driver.AppleThunderboltPCIDownAdapter 2.0.2

com.apple.driver.AppleThunderboltNHI 3.1.7

com.apple.iokit.IOThunderboltFamily 4.2.2

com.apple.iokit.IOEthernetAVBController 1.0.3b3

com.apple.iokit.IO80211Family 730.60

com.apple.driver.mDNSOffloadUserClient 1.0.1b8

com.apple.iokit.IONetworkingFamily 3.2

com.apple.iokit.IOAHCIFamily 2.7.5

com.apple.iokit.IOUSBFamily 720.4.4

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 300.0

com.apple.kext.AppleMatch 1.0.0d1

com.apple.driver.AppleKeyStore 2

com.apple.driver.AppleMobileFileIntegrity 1.0.5

com.apple.driver.AppleCredentialManager 1.0

com.apple.driver.DiskImages 397

com.apple.iokit.IOStorageFamily 2.0

com.apple.iokit.IOReportFamily 31

com.apple.driver.AppleFDEKeyStore 28.30

com.apple.driver.AppleACPIPlatform 3.1

com.apple.iokit.IOPCIFamily 2.9

com.apple.iokit.IOACPIFamily 1.4

com.apple.kec.pthread 1

com.apple.kec.corecrypto 1.0

com.apple.kec.Libm 1

Unable to gather system configuration information.

iMac (27-inch, Late 2012), OS X Yosemite (10.10.4), 32 GB RAM

Posted on Jul 10, 2015 5:23 PM

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Q: Kernel Panic - intermittent

  • All replies
  • Helpful answers

  • by Carolyn Samit,Helpful

    Carolyn Samit Carolyn Samit Jul 10, 2015 5:30 PM in response to Greg Mckay
    Level 10 (120,054 points)
    Apple Watch
    Jul 10, 2015 5:30 PM in response to Greg Mckay

    com.symantec.kext.fw 5.3.1f4

    com.Cycling74.driver.Soundflower 1.5.1

    com.eltima.SyncMate.kext 0.2.5b15

    com.symantec.kext.ips 3.10.2f23

    com.symantec.kext.pf 5.7.1f4

    com.symantec.kext.internetSecurity 5.4f4

     

     

    Uninstall all of the above then restart your Mac to test.

     

    Information for why it's not a good idea to install Symantec products on a Mac > Viruses, Trojans, Malware - and other aspects of Internet Security: Apple Support Communities

     

    Uninstall SoundFlower >  Uninstalling Soundflower

     

    Uninstall Eltima > How to uninstall SyncMate



    It won't do any good to send reports to Apple since third party software is the issue.

  • by Greg Mckay,

    Greg Mckay Greg Mckay Jul 10, 2015 5:49 PM in response to Carolyn Samit
    Level 1 (140 points)
    Jul 10, 2015 5:49 PM in response to Carolyn Samit

    Thanks for the prompt reply Carolyn.

     

    Why those ones? Last ones loaded? Or is there some giveaway in the text?

     

    BTW - yes, I'll do those - just trying to learn something out of this process.

     

    Any idea why it only happens during the times mentioned?

     

    Thanks again.

  • by Kappy,Helpful

    Kappy Kappy Jul 10, 2015 5:51 PM in response to Greg Mckay
    Level 10 (270,190 points)
    Desktops
    Jul 10, 2015 5:51 PM in response to Greg Mckay

    I would first uninstall your Symantec software. Use their uninstalling tool: Symantec Uninstall Application. Leave the other software installed for now. Check if there is a new version of SyncMate or How to uninstall SyncMate it as well. There is no evidence that SoundFlower is a problem, so you can leave it for the time being. After uninstalling the software you should boot into Safe Mode then reboot normally. See if this fixes the problems.

     

    You can Visit The XLab FAQs and read the FAQ on diagnosing kernel panics for more suggestions to deal with the problem.

  • by Greg Mckay,

    Greg Mckay Greg Mckay Jul 10, 2015 6:40 PM in response to Kappy
    Level 1 (140 points)
    Jul 10, 2015 6:40 PM in response to Kappy

    Thanks Kappy.

     

    Norton  - uninstalled.

     

    Syncmate - Uninstalled. I'll leave Soundflower for the moment.

     

    Have also reset PRAM and SCC.

     

    See how we go.

     

    Anyone know what "Oxdeadbeefdeadbeef" means?

  • by Kappy,

    Kappy Kappy Jul 10, 2015 6:47 PM in response to Greg Mckay
    Level 10 (270,190 points)
    Desktops
    Jul 10, 2015 6:47 PM in response to Greg Mckay

    Some clue to the problem's cause, but I have no idea what it refers to. Bad address, I think.

  • by horusmac,

    horusmac horusmac Jul 13, 2015 12:38 AM in response to Kappy
    Level 1 (0 points)
    Jul 13, 2015 12:38 AM in response to Kappy

    Same thing happens to me... Started with Yosemite upgrade. Here's a sample panic:

     

    Anonymous UUID:       5DCCC634-596E-56F0-C846-F080620DD7A8

     

     

    Mon Jul 13 00:03:03 2015

     

     

    *** Panic Report ***

    panic(cpu 0 caller 0xffffff8020f6cf6d): "a freed zone element has been modified in zone kalloc.128: expected 0xffffff805fa32880 but found 0xffffff805fa02880, bits changed 0x30000, at offset 0 of 128 in element 0xffffff805f33ff80, cookies 0x3f0011c0d4112e20 0x535210a9784be9b"@/SourceCache/xnu/xnu-2782.30.5/osfmk/kern/zalloc.c:496

    Backtrace (CPU 0), Frame : Return Address

    0xffffff820dd43180 : 0xffffff8020f2bda1

    0xffffff820dd43200 : 0xffffff8020f6cf6d

    0xffffff820dd43270 : 0xffffff8020f6ca71

    0xffffff820dd432b0 : 0xffffff8020f6b8b7

    0xffffff820dd433e0 : 0xffffff8020f34601

    0xffffff820dd43410 : 0xffffff80213c877c

    0xffffff820dd43450 : 0xffffff802112f89f

    0xffffff820dd434b0 : 0xffffff802132da28

    0xffffff820dd435a0 : 0xffffff802132e435

    0xffffff820dd43740 : 0xffffff8021327199

    0xffffff820dd437d0 : 0xffffff802133de8f

    0xffffff820dd439a0 : 0xffffff802113b268

    0xffffff820dd43a80 : 0xffffff802113aa05

    0xffffff820dd43bb0 : 0xffffff802114df95

    0xffffff820dd43c00 : 0xffffff802115bc57

    0xffffff820dd43f20 : 0xffffff8021150fca

    0xffffff820dd43f50 : 0xffffff802144bc56

    0xffffff820dd43fb0 : 0xffffff8021035376

     

     

    BSD process name corresponding to current thread: rsync

     

     

    Mac OS version:

    14E46

     

     

    Kernel version:

    Darwin Kernel Version 14.4.0: Thu May 28 11:35:04 PDT 2015; root:xnu-2782.30.5~1/RELEASE_X86_64

    Kernel UUID: E3C26B2F-8B97-3F1D-B193-690F7E34F830

    Kernel slide:     0x0000000020c00000

    Kernel text base: 0xffffff8020e00000

    __HIB  text base: 0xffffff8020d00000

    System model name: iMac13,2 (Mac-FC02E91DDD3FA6A4)

     

     

    System uptime in nanoseconds: 75564824631305

    last loaded kext at 65144899881658: com.apple.iokit.SCSITaskUserClient 3.7.5 (addr 0xffffff7fa3e1d000, size 36864)

    last unloaded kext at 65222954190749: com.apple.driver.AppleUSBCDC 4.3.3b1 (addr 0xffffff7fa3e19000, size 16384)

    loaded kexts:

    com.symantec.kext.SymAPComm 12.7.1f4

    com.symantec.kext.fw 5.3.1f4

    org.virtualbox.kext.VBoxNetAdp 4.3.24

    org.virtualbox.kext.VBoxNetFlt 4.3.24

    org.virtualbox.kext.VBoxUSB 4.3.24

    org.virtualbox.kext.VBoxDrv 4.3.24

    com.fsb.kext.logKext 2.3

    com.symantec.kext.ips 3.10.2f23

    com.symantec.kext.pf 5.7.1f4

    com.symantec.kext.internetSecurity 5.4f4

    com.apple.iokit.SCSITaskUserClient 3.7.5

    com.apple.driver.AudioAUUC 1.70

    com.apple.driver.AppleHWSensor 1.9.5d0

    com.apple.filesystems.autofs 3.0

    com.apple.driver.ApplePlatformEnabler 2.2.0d4

    com.apple.driver.AGPM 110.19.6

    com.apple.driver.X86PlatformShim 1.0.0

    com.apple.iokit.IOBluetoothSerialManager 4.3.5f8

    com.apple.driver.AppleMikeyHIDDriver 124

    com.apple.driver.AppleOSXWatchdog 1

    com.apple.driver.AppleMikeyDriver 272.18.1

    com.apple.driver.AppleUpstreamUserClient 3.6.1

    com.apple.GeForce 10.0.4

    com.apple.driver.AppleHDA 272.18.1

    com.apple.iokit.IOUserEthernet 1.0.1

    com.apple.driver.AppleIntelHD4000Graphics 10.0.6

    com.apple.driver.AppleSMCLMU 2.0.7d0

    com.apple.Dont_Steal_Mac_OS_X 7.0.0

    com.apple.driver.AppleHWAccess 1

    com.apple.driver.AppleHV 1

    com.apple.driver.AppleLPC 1.7.3

    com.apple.driver.AppleBacklight 170.7.4

    com.apple.driver.AppleMCCSControl 1.2.12

    com.apple.driver.AppleIntelFramebufferCapri 10.0.6

    com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0

    com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.5f8

    com.apple.driver.AppleThunderboltIP 2.0.2

    com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

    com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0

    com.apple.BootCache 36

    com.apple.driver.AppleUSBHub 705.4.2

    com.apple.driver.XsanFilter 404

    com.apple.iokit.IOAHCIBlockStorage 2.7.1

    com.apple.driver.AppleSDXC 1.6.5

    com.apple.iokit.AppleBCM5701Ethernet 10.1.3

    com.apple.driver.AirPort.Brcm4360 930.37.3

    com.apple.driver.AppleAHCIPort 3.1.2

    com.apple.driver.AppleUSBEHCI 705.4.14

    com.apple.driver.AppleUSBXHCI 710.4.11

    com.apple.driver.AppleACPIButtons 3.1

    com.apple.driver.AppleRTC 2.0

    com.apple.driver.AppleHPET 1.8

    com.apple.driver.AppleSMBIOS 2.1

    com.apple.driver.AppleACPIEC 3.1

    com.apple.driver.AppleAPIC 1.7

    com.apple.driver.AppleIntelCPUPowerManagementClient 218.0.0

    com.apple.nke.applicationfirewall 161

    com.apple.security.quarantine 3

    com.apple.security.TMSafetyNet 8

    com.apple.driver.AppleIntelCPUPowerManagement 218.0.0

    com.apple.kext.triggers 1.0

    com.apple.iokit.IOSerialFamily 11

    com.apple.nvidia.driver.NVDAGK100Hal 10.0.4

    com.apple.nvidia.driver.NVDAResman 10.0.4

    com.apple.driver.DspFuncLib 272.18.1

    com.apple.kext.OSvKernDSPLib 1.15

    com.apple.iokit.IOSurface 97.4

    com.apple.driver.AppleBacklightExpert 1.1.0

    com.apple.iokit.IONDRVSupport 2.4.1

    com.apple.driver.AppleSMBusController 1.0.13d1

    com.apple.driver.AppleHDAController 272.18.1

    com.apple.iokit.IOHDAFamily 272.18.1

    com.apple.iokit.IOAudioFamily 203.3

    com.apple.vecLib.kext 1.2.0

    com.apple.driver.AppleSMBusPCI 1.0.12d1

    com.apple.iokit.IOUSBUserClient 705.4.0

    com.apple.driver.X86PlatformPlugin 1.0.0

    com.apple.driver.AppleSMC 3.1.9

    com.apple.driver.IOPlatformPluginFamily 5.9.1d7

    com.apple.iokit.IOAcceleratorFamily2 156.16

    com.apple.AppleGraphicsDeviceControl 3.10.24

    com.apple.iokit.IOGraphicsFamily 2.4.1

    com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0

    com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.5f8

    com.apple.iokit.IOBluetoothFamily 4.3.5f8

    com.apple.driver.AppleThunderboltEDMSink 4.0.3

    com.apple.iokit.IOSCSIBlockCommandsDevice 3.7.5

    com.apple.iokit.IOUSBMassStorageClass 3.7.2

    com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.5

    com.apple.driver.AppleUSBHIDKeyboard 176.2

    com.apple.driver.AppleHIDKeyboard 176.2

    com.apple.iokit.IOUSBHIDDriver 705.4.0

    com.apple.driver.AppleUSBMergeNub 705.4.0

    com.apple.driver.AppleUSBComposite 705.4.9

    com.apple.driver.CoreStorage 471.30.1

    com.apple.driver.AppleThunderboltDPOutAdapter 4.0.6

    com.apple.driver.AppleThunderboltDPInAdapter 4.0.6

    com.apple.driver.AppleThunderboltDPAdapterFamily 4.0.6

    com.apple.driver.AppleThunderboltPCIDownAdapter 2.0.2

    com.apple.driver.AppleThunderboltNHI 3.1.7

    com.apple.iokit.IOThunderboltFamily 4.2.2

    com.apple.iokit.IOEthernetAVBController 1.0.3b3

    com.apple.iokit.IO80211Family 730.60

    com.apple.driver.mDNSOffloadUserClient 1.0.1b8

    com.apple.iokit.IONetworkingFamily 3.2

    com.apple.iokit.IOAHCIFamily 2.7.5

    com.apple.iokit.IOUSBFamily 720.4.4

    com.apple.driver.AppleEFINVRAM 2.0

    com.apple.iokit.IOHIDFamily 2.0.0

    com.apple.driver.AppleEFIRuntime 2.0

    com.apple.iokit.IOSMBusFamily 1.1

    com.apple.security.sandbox 300.0

    com.apple.kext.AppleMatch 1.0.0d1

    com.apple.driver.AppleKeyStore 2

    com.apple.driver.AppleMobileFileIntegrity 1.0.5

    com.apple.driver.AppleCredentialManager 1.0

    com.apple.driver.DiskImages 397

    com.apple.iokit.IOStorageFamily 2.0

    com.apple.iokit.IOReportFamily 31

    com.apple.driver.AppleFDEKeyStore 28.30

    com.apple.driver.AppleACPIPlatform 3.1

    com.apple.iokit.IOPCIFamily 2.9

    com.apple.iokit.IOACPIFamily 1.4

    com.apple.kec.Libm 1

    com.apple.kec.corecrypto 1.0

    com.apple.kec.pthread 1

     

     

    System Profile:

    AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF4), Broadcom BCM43xx 1.0 (7.15.166.24.3)

    Bluetooth: Version 4.3.5f8 15969, 3 services, 27 devices, 1 incoming serial ports

    Thunderbolt Bus: iMac, Apple Inc., 23.4

    Memory Module: BANK 0/DIMM1, 8 GB, DDR3, 1600 MHz, 0x029E, 0x434D5358384758334D314131363030433130

    Memory Module: BANK 1/DIMM1, 8 GB, DDR3, 1600 MHz, 0x029E, 0x434D5358384758334D314131363030433130

    USB Device: My Book 1140

    USB Device: USB3.0 Hub

    USB Device: USB2.0 Hub

    USB Device: SNA-DC/U

    USB Device: Hub

    USB Device: FaceTime HD Camera (Built-in)

    USB Device: Hub

    USB Device: Keyboard Hub

    USB Device: Comfort Mouse 3000

    USB Device: Apple Keyboard

    USB Device: Hub

    USB Device: BRCM20702 Hub

    USB Device: Bluetooth USB Host Controller

    Serial ATA Device: APPLE HDD ST1000DM003, 1 TB

    Serial ATA Device: APPLE SSD SM128E, 121.33 GB

    Model: iMac13,2, BootROM IM131.010A.B08, 4 processors, Intel Core i7, 3.4 GHz, 16 GB, SMC 2.11f14

    Network Service: Wi-Fi, AirPort, en1

    Graphics: NVIDIA GeForce GTX 675MX, NVIDIA GeForce GTX 675MX, PCIe, 1024 MB

     

    Any ideas greatly appreciated!

  • by Greg Mckay,

    Greg Mckay Greg Mckay Jul 13, 2015 12:53 AM in response to horusmac
    Level 1 (140 points)
    Jul 13, 2015 12:53 AM in response to horusmac

    Oh, that's no good!

     

    Well, I took the advice of the previous respondents, and did the following:

     

    Uninstalled Nortons (seems like that is a common theme)

    Uninstalled Syncmate - maybe you don't have that

    Reset PRAM and SCC - (that wasn't mentioned, but I read it elsewhere)

    I haven't yet done the "Safe Mode" startup - I'm really waiting to see how I go.

     

    So far, after a couple of days - all good.

     

    Best of luck.