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Question: Mid-2011 27" iMac crashing

Hi there! I have been having trouble with this iMac since I got it a few years ago. When it sleeps, it takes an age to wake up, and sometimes crashes on wake-up or just restarts itself whilst sleeping. I'd really like to know what the **** is going on and I can't understand the crash reports. No updates have seemed to have helped but I haven't yet tried High Sierra. Could you help please?


iMac 27" mid-2011

OS: macOS Sierra 10.12.6

Processor: 3.4GHz Intel Core i7

RAM: 16 GB 1333 MHz DDR3

Storage: 1.25TB Fusion drive (I think that's it - 1TB spinning and 250GB SSD)


*** Panic Report ***

Panic(CPU 4): Unresponsive processor (this CPU did not acknowledge interrupts) TLB state:0x0

RAX: 0xffffff802ccfa671, RBX: 0x41c4156c9014003e, RCX: 0xffffff802ccfa78c, RDX: 0x0000000000000001

RSP: 0xffffff92169ebdf0, RBP: 0xffffff92169ebe60, RSI: 0x0000000000000004, RDI: 0xffffff82152ac808

R8: 0x000000000000ffff, R9: 0x0000000000000001, R10: 0xffffff802d521b78, R11: 0x0000000000000100

R12: 0x0000000000000004, R13: 0x0000000000000000, R14: 0x0000000000000000, R15: 0xffffff82152ac808

RFL: 0x0000000000000297, RIP: 0xffffff802ccfa678, CS: 0x0000000000000008, SS: 0x0000000000000010

Backtrace (CPU 4), Frame : Return Address

0xffffff820a686f70 : 0xffffff802cdfd781

0xffffff820a686fd0 : 0xffffff802cc9a759

0xffffff92169ebe60 : 0xffffff7faec7a530

0xffffff92169ebe90 : 0xffffff7faec7c20c

0xffffff92169ebee0 : 0xffffff802d2bc46f

0xffffff92169ebf30 : 0xffffff802d2bacd1

0xffffff92169ebf80 : 0xffffff802d2ba2b6

0xffffff92169ebfb0 : 0xffffff802cc978f7

Kernel Extensions in backtrace:

com.apple.driver.AppleThunderboltNHI(4.5.4)[60300EA7-15C5-396B-B8E2-BBFFE5AA65C 2]@0xffffff7faec78000->0xffffff7faec94fff

dependency: com.apple.iokit.IOACPIFamily(1.4)[4F7FB6AD-2498-3F71-827C-ED7AA4BF2511]@0xfffff f7fad6d2000

dependency: com.apple.iokit.IOPCIFamily(2.9)[3E00E7D2-E569-341D-9BE0-34D5DE491825]@0xffffff 7fad697000

dependency: com.apple.iokit.IOThunderboltFamily(6.5.7)[151493AF-E856-395F-9F2D-151853A404FF ]@0xffffff7fae114000



BSD process name corresponding to current thread: kernel_task



Mac OS version:

16G29



Kernel version:

Darwin Kernel Version 16.7.0: Thu Jun 15 17:36:27 PDT 2017; root:xnu-3789.70.16~2/RELEASE_X86_64

Kernel UUID: ************************

Kernel slide: 0x000000002ca00000

Kernel text base: 0xffffff802cc00000

__HIB text base: 0xffffff802cb00000

System model name: iMac12,2 (Mac-942B59F58194171B)



System uptime in nanoseconds: 2536395370561

last loaded kext at 113550073390: com.apple.filesystems.smbfs 3.1.2 (addr 0xffffff7fadc6d000, size 425984)

last unloaded kext at 153824882722: com.apple.driver.usb.AppleUSBUHCI 1.1 (addr 0xffffff7fadfc2000, size 126976)

loaded kexts:

com.paceap.kext.pacesupport.snowleopard 5.9.1

tc.tctechnologies.driver.Saffire 4.3.0 41017

com.uaudio.driver.UAFWAudio 4.3.1 47542

com.uaudio.driver.UAD2System 9.2.0

com.apple.filesystems.smbfs 3.1.2

com.apple.filesystems.msdosfs 1.10

com.apple.driver.AudioAUUC 1.70

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.filesystems.autofs 3.0

com.apple.iokit.IOBluetoothSerialManager 5.0.5f1

com.apple.driver.AGPM 110.23.17

com.apple.driver.AppleMikeyHIDDriver 131

com.apple.driver.AppleMikeyDriver 279.48

com.apple.driver.AppleUpstreamUserClient 3.6.4

com.apple.driver.pmtelemetry 1

com.apple.iokit.IOUserEthernet 1.0.1

com.apple.kext.AMDLegacyFramebuffer 1.5.1

com.apple.driver.AppleHDA 279.48

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AppleIntelHD3000Graphics 10.0.2

com.apple.driver.AppleOSXWatchdog 1

com.apple.AMDRadeonX3000 1.5.1

com.apple.driver.AppleHV 1

com.apple.driver.AppleSMCPDRC 1.0.0

com.apple.kext.AMD6000Controller 1.5.1

com.apple.driver.AppleThunderboltIP 3.0.8

com.apple.driver.AppleBacklight 170.9.20

com.apple.driver.AppleLPC 3.1

com.apple.driver.AppleSMCLMU 208

com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0

com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0

com.apple.driver.AppleIntelSNBGraphicsFB 10.0.2

com.apple.driver.AppleMCCSControl 1.3.4

com.apple.driver.AppleUSBCardReader 404.50.6

com.apple.driver.AppleIRController 341.2

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0

com.apple.BootCache 40

com.apple.filesystems.hfs.kext 366.70.1

com.apple.iokit.SCSITaskUserClient 394.50.1

com.apple.iokit.IOAHCIBlockStorage 295.20.1

com.apple.iokit.AppleBCM5701Ethernet 10.2.10

com.apple.driver.AirPort.Atheros40 700.74.5

com.apple.driver.AppleFWOHCI 5.5.5

com.apple.driver.AppleAHCIPort 326.60.1

com.apple.driver.AppleRTC 2.0

com.apple.driver.AppleACPIButtons 5.0

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleSMBIOS 2.1

com.apple.driver.AppleACPIEC 5.0

com.apple.driver.AppleAPIC 1.7

com.apple.driver.AppleIntelCPUPowerManagementClient 219.0.0

com.apple.nke.applicationfirewall 172

com.apple.security.quarantine 3

com.apple.security.TMSafetyNet 8

com.apple.driver.AppleIntelCPUPowerManagement 219.0.0

com.apple.kext.triggers 1.0

com.apple.iokit.IOSerialFamily 11

com.apple.driver.DspFuncLib 279.48

com.apple.kext.OSvKernDSPLib 525

com.apple.driver.AppleSSE 1.0

com.apple.iokit.IOAcceleratorFamily2 311.14

com.apple.iokit.IOSurface 159.9

com.apple.driver.AppleSMBusPCI 1.0.14d1

com.apple.iokit.IOFireWireIP 2.2.7

com.apple.AppleGraphicsDeviceControl 3.14.49

com.apple.driver.AppleBacklightExpert 1.1.0

com.apple.iokit.IONDRVSupport 516.1

com.apple.driver.AppleHDAController 279.48

com.apple.iokit.IOHDAFamily 279.48

com.apple.iokit.IOAudioFamily 205.15

com.apple.vecLib.kext 1.2.0

com.apple.driver.IOPlatformPluginLegacy 1.0.0

com.apple.driver.IOPlatformPluginFamily 6.0.0d8

com.apple.kext.AMDLegacySupport 1.5.1

com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0

com.apple.driver.AppleThunderboltEDMSink 4.1.1

com.apple.driver.AppleSMC 3.1.9

com.apple.driver.AppleSMBusController 1.0.18d1

com.apple.iokit.IOGraphicsFamily 515.3

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 5.0.5f1

com.apple.iokit.IOBluetoothHostControllerUSBTransport 5.0.5f1

com.apple.iokit.IOBluetoothHostControllerTransport 5.0.5f1

com.apple.iokit.IOBluetoothFamily 5.0.5f1

com.apple.iokit.IOSCSIBlockCommandsDevice 394.50.1

com.apple.iokit.IOUSBMassStorageDriver 131.60.1

com.apple.driver.AppleThunderboltDPInAdapter 5.0.2

com.apple.driver.AppleThunderboltDPOutAdapter 5.0.2

com.apple.driver.AppleThunderboltDPAdapterFamily 5.0.2

com.apple.driver.AppleThunderboltPCIUpAdapter 2.1.3

com.apple.driver.AppleThunderboltPCIDownAdapter 2.1.3

com.apple.driver.usb.IOUSBHostHIDDevice 1.1

com.apple.driver.usb.networking 5.0.0

com.apple.driver.usb.AppleUSBHostCompositeDevice 1.1

com.apple.driver.usb.AppleUSBHub 1.1

com.apple.driver.CoreStorage 540.30.1

com.apple.filesystems.hfs.encodings.kext 1

com.apple.iokit.IOSCSIMultimediaCommandsDevice 394.50.1

com.apple.iokit.IOBDStorageFamily 1.8

com.apple.iokit.IODVDStorageFamily 1.8

com.apple.iokit.IOCDStorageFamily 1.8

com.apple.iokit.IOAHCISerialATAPI 266.50.1

com.apple.iokit.IOSCSIArchitectureModelFamily 394.50.1

com.apple.driver.AppleThunderboltNHI 4.5.4

com.apple.iokit.IOThunderboltFamily 6.5.7

com.apple.iokit.IOEthernetAVBController 1.0.3b4

com.apple.driver.mDNSOffloadUserClient 1.0.1b8

com.apple.iokit.IO80211Family 1200.12.2

com.apple.iokit.IONetworkingFamily 3.2

com.apple.driver.corecapture 1.0.4

com.apple.iokit.IOFireWireFamily 4.6.6

com.apple.iokit.IOAHCIFamily 288

com.apple.driver.usb.AppleUSBEHCIPCI 1.1

com.apple.driver.usb.AppleUSBEHCI 1.1

com.apple.driver.usb.AppleUSBHostPacketFilter 1.0

com.apple.iokit.IOUSBFamily 900.4.1

com.apple.driver.AppleUSBHostMergeProperties 1.1

com.apple.driver.AppleEFINVRAM 2.1

com.apple.driver.AppleEFIRuntime 2.1

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.KernelRelayHost 1

com.apple.iokit.IOUSBHostFamily 1.1

com.apple.driver.AppleBusPowerController 1.0

com.apple.driver.DiskImages 444.50.16

com.apple.iokit.IOStorageFamily 2.1

com.apple.iokit.IOReportFamily 31

com.apple.driver.AppleFDEKeyStore 28.30

com.apple.driver.AppleACPIPlatform 5.0

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

Panic(CPU 5): Unresponsive processor (this CPU did not acknowledge interrupts) TLB state:0x0

RAX: 0x0000000000000000, RBX: 0xffffff820be78800, RCX: 0x000000000002a000, RDX: 0x000000000002a000

RSP: 0xffffff9216a23be0, RBP: 0xffffff9216a23c60, RSI: 0x0000000000000000, RDI: 0x0000000041220042

R8: 0xffffff805110e180, R9: 0x0000000000000001, R10: 0x0000000000000000, R11: 0xffffff820a5f6058

R12: 0x000000000002a000, R13: 0x0000000000000000, R14: 0x0000000000000000, R15: 0x0000000000000000

RFL: 0x0000000000000246, RIP: 0xffffff802cf03d10, CS: 0x0000000000000008, SS: 0x0000000000000000

Backtrace (CPU 5), Frame : Return Address

0xffffff820a702f70 : 0xffffff802cdfd781

0xffffff820a702fd0 : 0xffffff802cc9a759

0xffffff9216a23c60 : 0xffffff802cefab50

0xffffff9216a23cd0 : 0xffffff7faea20bed

0xffffff9216a23d20 : 0xffffff7fad453224

0xffffff9216a23d70 : 0xffffff7fae68af17

0xffffff9216a23dd0 : 0xffffff7fae693cbf

0xffffff9216a23e10 : 0xffffff7fae662c1e

0xffffff9216a23e40 : 0xffffff7faf406c70

0xffffff9216a23e70 : 0xffffff7faf40619c

0xffffff9216a23ec0 : 0xffffff7faf405a0d

0xffffff9216a23f10 : 0xffffff7faf407d1f

0xffffff9216a23f30 : 0xffffff802d2bacd1

0xffffff9216a23f80 : 0xffffff802d2ba2b6

0xffffff9216a23fb0 : 0xffffff802cc978f7

Kernel Extensions in backtrace:

com.apple.iokit.IOStorageFamily(2.1)[F908D7F5-4F54-3B89-8657-57F06350F4DB]@0xff ffff7fad450000->0xffffff7fad476fff

com.apple.iokit.IOAHCIFamily(288.0)[5C275B66-A173-3D92-853A-44FC35D45FFC]@0xfff fff7fae65f000->0xffffff7fae678fff

com.apple.driver.AppleAHCIPort(326.60.1)[64D547B5-153B-34CC-B506-10E958212BF6]@ 0xffffff7faf3fe000->0xffffff7faf41bfff

dependency: com.apple.iokit.IOAHCIFamily(288)[5C275B66-A173-3D92-853A-44FC35D45FFC]@0xfffff f7fae65f000

dependency: com.apple.iokit.IOPCIFamily(2.9)[3E00E7D2-E569-341D-9BE0-34D5DE491825]@0xffffff 7fad697000

com.apple.iokit.IOAHCIBlockStorage(295.20.1)[0B188EA4-DAC4-3EB7-9212-36318F549C 19]@0xffffff7fae689000->0xffffff7fae6a4fff

dependency: com.apple.iokit.IOAHCIFamily(288)[5C275B66-A173-3D92-853A-44FC35D45FFC]@0xfffff f7fae65f000

dependency: com.apple.iokit.IOStorageFamily(2.1)[F908D7F5-4F54-3B89-8657-57F06350F4DB]@0xff ffff7fad450000

com.apple.driver.CoreStorage(540.30.1)[0E033F13-4AF3-38EB-966E-7FACAAFA222D]@0x ffffff7fae9d3000->0xffffff7faeaaefff

dependency: com.apple.iokit.IOStorageFamily(2.1)[F908D7F5-4F54-3B89-8657-57F06350F4DB]@0xff ffff7fad450000



BSD process name corresponding to current thread: kernel_task

Panic(CPU 6): Unresponsive processor (this CPU did not acknowledge interrupts) TLB state:0x0

RAX: 0x0000024e8cf1428e, RBX: 0x0000024e8cf1428e, RCX: 0x000000004b77373d, RDX: 0x0000000000000009

RSP: 0xffffff8214c23a98, RBP: 0xffffff8214c23ad0, RSI: 0x0000000000000003, RDI: 0xffffff804d383240

R8: 0x0000024e8d89c7ee, R9: 0xffffff804d3cd050, R10: 0x0000000000000000, R11: 0xffffff820a5cd058

R12: 0x0000024e8cf14b28, R13: 0x0000024e8cf16849, R14: 0x00000000fffffff7, R15: 0xffffff804d383240

RFL: 0x0000000000000287, RIP: 0xffffff802cc97490, CS: 0x0000000000000008, SS: 0x0000000000000010

Backtrace (CPU 6), Frame : Return Address

0xffffff820a6a5f70 : 0xffffff802cdfd781

0xffffff820a6a5fd0 : 0xffffff802cc9a759

0xffffff8214c23ad0 : 0xffffff802cc96df5

0xffffff8214c23af0 : 0xffffff802d2ba8a5

0xffffff8214c23b10 : 0xffffff802d2bd685

0xffffff8214c23b80 : 0xffffff7fad6f479a

0xffffff8214c23c00 : 0xfff





Model: iMac12,2, BootROM IM121.0047.B29, 4 processors, Intel Core i7, 3.4 GHz, 16 GB, SMC 1.72f5

Graphics: AMD Radeon HD 6970M, AMD Radeon HD 6970M, PCIe, 2048 MB

Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353237334348302D4348392020

Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353237334348302D4348392020

Memory Module: BANK 0/DIMM1, 4 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353237334348302D4348392020

Memory Module: BANK 1/DIMM1, 4 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353237334348302D4348392020

AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x9A), Atheros 9380: 4.0.74.0-P2P

Bluetooth: Version 5.0.5f1, 3 services, 27 devices, 1 incoming serial ports

Network Service: Ethernet, Ethernet, en0

PCI Card: Apollo Thunderbolt - QUAD, Other Multimedia, Thunderbolt@193,0,0

Serial ATA Device: ST31000528AS, 1 TB

Serial ATA Device: APPLE SSD TS256C, 251 GB

Serial ATA Device: OPTIARC DVD RW AD-5690H

USB Device: USB 2.0 Bus

USB Device: Hub

USB Device: IR Receiver

USB Device: Card Reader

USB Device: USB 2.0 Bus

USB Device: FaceTime HD Camera (Built-in)

USB Device: Hub

USB Device: USB 2.0 Hub [MTT]

USB Device: USB DISK 2.0

USB Device: USB 2.0 Hub [MTT]

USB Device: Generic USB2.0 Device

USB Device: HP USB Multimedia Keyboard

USB Device: iLok

USB Device: USB Optical Mouse

USB Device: OneTouch III

USB Device: BRCM2046 Hub

USB Device: Bluetooth USB Host Controller

Thunderbolt Bus: iMac, Apple Inc., 25.1

Thunderbolt Device: Thunderbolt 2 Option Card, Universal Audio, Inc., 3, 24.1

iMac, macOS Sierra (10.12.6)

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Dec 17, 2017 9:26 PM in response to Shrimpanzee In response to Shrimpanzee

Have you installed any RAM in it, if so exactly what brand and what are the specs?


Also, please uninstall the following:


com.paceap.kext.pacesupport.snowleopard 5.9.1

tc.tctechnologies.driver.Saffire 4.3.0 41017

com.uaudio.driver.UAFWAudio 4.3.1 47542

com.uaudio.driver.UAD2System 9.2.0

Dec 17, 2017 9:26 PM

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User profile for user: Shrimpanzee

Question: Mid-2011 27" iMac crashing