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nickatnyte_ Author

Level 1

42 points

iMac Pro restarting because of a problem?

iMac Pro intially booted as a Mac Pro backup, then reverted and reinstalled fresh High Sierra because of some compatibility issues, now getting forced restarts with this error code, thank you for any help!

{"caused_by":"macos","macos_system_state":"running","bug_type":"210","os_version ":"Bridge OS 2.0 (15P2064)","timestamp":"2018-01-12 06:47:28.38 +0000","incident_id":"3D1765A6-5583-44EF-9F16-BABB863EF278"}

{

"build" : "Bridge OS 2.0 (15P2064)",

"product" : "iBridge2,1",

"kernel" : "Darwin Kernel Version 17.3.0: Thu Nov 30 19:54:28 PST 2017; root:xnu-4570.37.11~2\/RELEASE_ARM64_T8010",

"incident" : "3D1765A6-5583-44EF-9F16-BABB863EF278",

"crashReporterKey" : "c0dec0dec0dec0dec0dec0dec0dec0dec0de0001",

"date" : "2018-01-12 06:47:28.05 +0000",

"panicString" : "panic(cpu 0 caller 0xfffffff0070fb3ec): macOS panic detected\nDebugger message: panic\nMemory ID: 0x6\nOS version: 15P2064\nKernel version: Darwin Kernel Version 17.3.0: Thu Nov 30 19:54:28 PST 2017; root:xnu-4570.37.11~2\/RELEASE_ARM64_T8010\nKernelCache UUID: D342183B0DC346B22ADABA5BB3219178\niBoot version: iBoot-4076.37.9\nsecure boot?: YES\nx86 EFI Boot State: 0xe\nx86 System State: 0x0\nx86 Power State: 0x0\nPaniclog version: 9\nKernel slide: 0x0000000000800000\nKernel text base: 0xfffffff007804000\nEpoch Time: sec usec\n
Boot : 0x5a57ac79 0x00085f05\n
Sleep
: 0x00000000 0x00000000\n
Wake : 0x00000000 0x00000000\n
Calendar: 0x5a5859ed 0x000e98dd\n\nPanicked task 0xffffffe0002eb610: 3545 pages, 156 threads: pid 0: kernel_task\nPanicked thread: 0xffffffe000314000, backtrace: 0xffffffe017f43550, tid: 334\n\t\t
lr: 0xfffffff0079f32e0
fp: 0xffffffe017f43690\n\t\t
lr: 0xfffffff0078dd588
fp: 0xffffffe017f436a0\n\t\t
lr: 0xfffffff00790dce4
fp: 0xffffffe017f43a10\n\t\t
lr: 0xfffffff00790dff4
fp: 0xffffffe017f43a50\n\t\t
lr: 0xfffffff00790f874
fp: 0xffffffe017f43a70\n\t\t
lr: 0xfffffff0070fb3ec
fp: 0xffffffe017f43ae0\n\t\t
lr: 0xfffffff0070fd674
fp: 0xffffffe017f43b80\n\t\t
lr: 0xfffffff0070fabac
fp: 0xffffffe017f43c00\n\t\t
lr: 0xfffffff0070bab08
fp: 0xffffffe017f43c30\n\t\t
lr: 0xfffffff007d56064
fp: 0xffffffe017f43c60\n\t\t
lr: 0xfffffff007d559b0
fp: 0xffffffe017f43c90\n\t\t
lr: 0xfffffff0078e84e0
fp: 0x0000000000000000\n\n",

"panicFlags" : "0x102",

"otherString" : "\n** Stackshot Succeeded ** Bytes Traced 73568 **\n",

"macOSPanicFlags" : "0x4",

"macOSPanicString" : "panic(cpu 0 caller 0xffffff8008f4bd7f): \"TLB invalidation IPI timeout, unresponsive CPU bitmap: 0x40, NMIPI acks: 0x0, now: 0x0, deadline: 9665438133613\"@\/BuildRoot\/Library\/Caches\/com.apple.xbs\/Sources\/xnu\/xnu- 4570.37.11\/osfmk\/x86_64\/pmap.c:2797\nBacktrace (CPU 0), Frame : Return Address\n0xffffffce4ac3af70 : 0xffffff8008e4f5f6 \n0xffffffce4ac3afc0 : 0xffffff8008f7c6f4 \n0xffffffce4ac3b000 : 0xffffff8008f6e109 \n0xffffffce4ac3b080 : 0xffffff8008e01120 \n0xffffffce4ac3b0a0 : 0xffffff8008e4f02c \n0xffffffce4ac3b1d0 : 0xffffff8008e4edac \n0xffffffce4ac3b230 : 0xffffff8008f79db8 \n0xffffffce4ac3b280 : 0xffffff8008e4f15a \n0xffffffce4ac3b2d0 : 0xffffff8008f7c6f4 \n0xffffffce4ac3b310 : 0xffffff8008f6e109 \n0xffffffce4ac3b390 : 0xffffff8008e01120 \n0xffffffce4ac3b3b0 : 0xffffff8008e4f02c \n0xffffffce4ac3b4e0 : 0xffffff8008e4edac \n0xffffffce4ac3b540 : 0xffffff8008f4bd7f \n0xffffffce4ac3b5e0 : 0xffffff8008f52ac4 \n0xffffffce4ac3b6c0 : 0xffffff8008f53a94 \n0xffffffce4ac3b720 : 0xffffff8008edbb1f \n0xffffffce4ac3b850 : 0xffffff8008edb402 \n0xffffffce4ac3b890 : 0xffffff8008f03e5b \n0xffffffce4ac3b8d0 : 0xffffff800906d4d9 \n0xffffffce4ac3b8e0 : 0xffffff7f8e27a49c \n0xffffffce4ac3b970 : 0xffffff8009076622 \n0xffffffce4ac3bab0 : 0xffffff800907a2d6 \n0xffffffce4ac3bb50 : 0xffffff8009079c97 \n0xffffffce4ac3bc90 : 0xffffff800907e2c4 \n0xffffffce4ac3bd00 : 0xffffff7f8e278e7e \n0xffffffce4ac3bd90 : 0xffffff80090ada64 \n0xffffffce4ac3be40 : 0xffffff8009341d8a \n0xffffffce4ac3bee0 : 0xffffff8009341efe \n0xffffffce4ac3bf40 : 0xffffff80093fa0b8 \n0xffffffce4ac3bfa0 : 0xffffff8008e01906 \n Kernel Extensions in backtrace:\n com.apple.filesystems.afpfs(11.1)[18924E77-CD8C-34F7-9C9F-D11EACF8A795]@0xffffff 7f8e272000->0xffffff7f8e2c1fff\n dependency: com.apple.filesystems.hfs.encodings.kext(1)[F1862033-F96A-398C-8231-DC48CC99056 7]@0xffffff7f8a5ad000\n dependency: com.apple.security.SecureRemotePassword(1.0)[347C3F6A-3E70-3DA1-B3B8-CD3746576C E7]@0xffffff7f8e261000\n\nBSD process name corresponding to current thread: diskimages-helpe\n\nMac OS version:\n17C2205\n\nKernel version:\nDarwin Kernel Version 17.3.0: Thu Nov 30 16:32:47 PST 2017; root:xnu-4570.37.11~1\/RELEASE_X86_64\nKernel UUID: AB211A98-9AA0-3640-9478-D16ABD4093BB\nKernel slide: 0x0000000008a00000\nKernel text base: 0xffffff8008c00000\n__HIB
text base: 0xffffff8008b00000\nSystem model name: iMacPro1,1 (Mac-7BA5B2D9E42DDD94)\n\nSystem uptime in nanoseconds: 9666940877554\nlast loaded kext at 1987187667816: @filesystems.smbfs\t3.2 (addr 0xffffff7f8e2c2000, size 434176)\nloaded kexts:\ncom.uaudio.driver.UAFWAudio\t4.3.1 47542\ncom.uaudio.driver.UAD2System\t9.4.0\n@filesystems.smbfs\t3.2\n@filesyste ms.afpfs\t11.1\n@nke.asp-tcp\t8.0.2\n@filesystems.msdosfs\t1.10\n>!ATopCaseHIDEv entDriver\t127.1\n>!AUpstreamUserClient\t3.6.4\n@kext.AMDFramebuffer\t1.6.4\n@ke xt.AMDRadeonX5000\t1.6.4\n>!AGraphicsDevicePolicy\t3.16.21\n@AGDCPluginDisplayMe trics\t3.16.2\n>!AHV\t1\n|IOUserEthernet\t1.0.1\n|IO!BSerialManager\t6.0.3f4\n>p mtelemetry\t1\n>AGPM\t110.23.24\n>!APlatformEnabler\t2.7.0d0\n>X86PlatformShim\t 1.0.0\n@Dont_Steal_Mac_OS_X\t7.0.0\n>AudioAUUC\t1.70\n@kext.AMD10000!C\t1.6.4\n> AGDCBacklightControl\t3.16.2\n>ACPI_SMC_PlatformPlugin\t1.0.0\n>!ABacklight\t170 .10.2\n>!AThunderboltIP\t3.1.1\n>!ABridgeAudio!C\t3.97\n>!AGFXHDA\t100.1.4\n>!A! ISlowAdaptiveClocking\t4.0.0\n>!AFIVRDriver\t4.1.0\n>!A!IPCHPMC\t2.0.1\n>!AOSXWa tchdog\t1\n>BridgeAudioCommunication\t3.97\n>!AMCCSControl\t1.5.3\n@filesystems. autofs\t3.0\n>!AHIDALSService\t1\n>!U!SCoexistentDriver\t439.37.1\n>!UCardReader \t439.37.1\n>usb.!UHostBillboardDevice\t1.0\n|SCSITaskUserClient\t404.30.2\n@!AE thernetAquantiaAqtionFirmwareDev\t1.0.34\n@!AEthernetAquantiaAqtionFirmware\t1.0 .34\n>BCMWLANFirmware4364.Datastore\t1\n>!ABCMWLANCoreV3.Datastore\t1\n@filesyst ems.apfs\t748.37.18\n>!AFileSystemDriver\t3.0.1\n@filesystems.hfs.kext\t407.30.1 \n@BootCache\t40\n@!AFSCompression.!AFSCompressionTypeDataless\t1.0.0d1\n@!AFSCo mpression.!AFSCompressionTypeZlib\t1.0.0\n>!AAHCIPort\t329\n>!ABCMWLANBusInterfa cePCIe\t1\n>!AACPIButtons\t6.1\n>!ASMBIOS\t2.1\n>!AACPIEC\t6.1\n>!AAPIC\t1.7\n@n ke.applicationfirewall\t183\n$TMSafetyNet\t8\n$quarantine\t3\n@IOBufferCopyEngin eTest\t1\n$SecureRemotePassword\t1.0\n>usb.cdc.acm\t5.0.0\n>!AHIDKeyboard\t203\n >!AMultitouchDriver\t1204.13\n>!AInputDeviceSupport\t1201.8\n>!AHS!BDriver\t127. 1\n>IO!BHIDDriver\t6.0.3f4\n|IOAccelerator!F2\t376.6\n@kext.AMDRadeonX5000AccelL ibs\t1.4.4\n>!AGraphicsControl\t3.16.21\n>!ASSE\t1.0\n|IOSurface\t209.2.2\n@kext .AMDRadeonX5100HWLibs\t1.0\n>!AHDA!C\t280.12\n|IOHDA!F\t280.12\n@!AGPUWrangler\t 3.16.2\n>IOPlatformPluginLegacy\t1.0.0\n@kext.AMDSupport\t1.6.4\n@!AGraphicsDevi ceControl\t3.16.21\n>!ABacklightExpert\t1.1.0\n|IONDRVSupport\t517.22\n|IOFireWi re!F\t4.6.8\n>!UAudio\t311.9\n|IOAudio!F\t206.5\n@vecLib.kext\t1.2.0\n>!ASMBusPC I\t1.0.14d1\n|IO!BHost!CUARTTransport\t6.0.3f4\n|IO!BHost!CTransport\t6.0.3f4\n> !A!ILpssUARTv1\t3.0.60\n>!A!ILpssUARTCommon\t3.0.60\n>!AOnboardSerial\t1.0\n|IOS kywalk!F\t1\n|IOSlowAdaptiveClocking!F\t1.0.0\n>X86PlatformPlugin\t1.0.0\n>IOPla tformPlugin!F\t6.0.0d8\n@kext.AMDRadeonX5000HWServices\t1.6.4\n>!ASMBus!C\t1.0.1 8d1\n|IOGraphics!F\t517.22\n>!AThunderboltEDMSink\t4.1.2\n@kext.triggers\t1.0\n> usb.IOUSBHostHIDDevice\t1.2\n>usb.cdc.ecm\t5.0.0\n>usb.cdc.ncm\t5.0.0\n|IOUSBMas s!SClass\t4.0.4\n>usb.cdc\t5.0.0\n>usb.networking\t5.0.0\n>usb.!UHostCompositeDe vice\t1.2\n|IOAHCISerialATAPI\t267\n@filesystems.hfs.encodings.kext\t1\n>!AThund erboltDPOutAdapter\t5.0.2\n>!AThunderboltPCIUpAdapter\t2.1.3\n>!AHPM\t3.1.3\n>!A !ILpssI2C!C\t3.0.60\n>!A!ILpssDmac\t3.0.60\n>!A!ILpssI2C\t3.0.60\n>!AThunderbolt PCIDownAdapter\t2.1.3\n>!AThunderboltDPInAdapter\t5.0.2\n>!AThunderboltDPAdapter !F\t5.0.2\n|IOAHCIBlock!S\t301.20.1\n|IOAHCI!F\t288\n>!AXsanScheme\t3\n>!AThunde rboltNHI\t4.5.6\n|IOThunderbolt!F\t6.6.4\n>!UVHCI\t1.2\n>usb.!UVHCICommon\t1.0\n >!AEffaceableNOR\t1.0\n|IOBufferCopy!C\t1.0.0\n|IONVMe!F\t2.1.0\n>!ABCMWLANCore\ t1.0.0\n>IOImageLoader\t1.0.0\n|IOSerial!F\t11\n|IO80211!FV2\t1200.12.2\n>coreca pture\t1.0.4\n>!AEthernetAquantiaAqtion\t1.3.43\n>mDNSOffloadUserClient\t1.0.1b8 \n>!UMergeNub\t900.4.1\n>!UHostMergeProperties\t1.2\n>usb.!UXHCIPCI\t1.2\n>usb.! UXHCI\t1.2\n>usb.!UHostPacketFilter\t1.0\n|IOUSB!F\t900.4.1\n>!AEFINVRAM\t2.1\n| IOHID!F\t2.0.0\n>!AEFIRuntime\t2.1\n>!ASMCRTC\t1.0\n|IOSMBus!F\t1.1\n$sandbox\t3 00.0\n@kext.!AMatch\t1.0.0d1\n|IOBufferCopyEngine!F\t1\n>!AKeyStore\t2\n>!UTDM\t 439.37.1\n>!AMobileFileIntegrity\t1.0.5\n|IOUSBMass!SDriver\t140.30.1\n|IOSCSIBl ockCommandsDevice\t404.30.2\n|IOSCSIArchitectureModel!F\t404.30.2\n>!ACredential Manager\t1.0\n>KernelRelayHost\t1\n>!ASEPManager\t1.0.1\n>IOSlaveProcessor\t1\n> !AFDEKeyStore\t28.30\n>!AEffaceable!S\t1.0\n|IOTimeSync!F\t650.7\n|IONetworking! F\t3.4\n>DiskImages\t480.30.2\n|IO!S!F\t2.1\n|IO!B!F\t6.0.3f4\n|IOUSBHost!F\t1.2 \n>usb.!UCommon\t1.0\n>!ABusPower!C\t1.0\n|IOReport!F\t31\n>!AACPIPlatform\t6.1\ n>!ASMC\t3.1.9\n|IOPCI!F\t2.9\n|IOACPI!F\t1.4\n@kec.Libm\t1\n@kec.pthread\t1\n@k ec.corecrypto\t1.0\n",

"macOSOtherString" : "\n** In Memory Panic Stackshot Succeeded ** Bytes Traced 607744 **\n",

"macOSRawStackshotData" : "AAEEACAAAAAAA\/

"binaryImages" : [["d342183b-0dc3-46b2-2ada-ba5bb3219178",18446743936270598144,"U"],["00000000-0 000-0000-0000-000000000000",0,"A"],["d34499bb-a808-3dbb-8766-9aa38ce89f35",64424 50944,"S"]],

"notes" : ["Source: \/dev\/rdisk1","28 unindexed user-stack frames from 17 pids: 26,27,28,29,30,31,36,37,38,39,41,42,44,46,47,51,58"]

}

Model: iMacPro1,1, BootROM , 10 processors, Intel Xeon W, 3 GHz, 128 GB, SMC

Graphics: Radeon Pro Vega 64, Radeon Pro Vega 64, PCIe, 16 GB

Memory Module: NODE 1/CPU1_DIMM_A0, 32 GB, DDR4, 2666 MHz, Micron, 36ASF4G72PZ-2G6D2 36ASF4G72PZ-2G6D2 36ASF4G72PZ-2G6D2 36ASF4G72PZ-2G6D2

Memory Module: NODE 1/CPU1_DIMM_B0, 32 GB, DDR4, 2666 MHz, Micron, 36ASF4G72PZ-2G6D2 36ASF4G72PZ-2G6D2 36ASF4G72PZ-2G6D2 36ASF4G72PZ-2G6D2

Memory Module: NODE 1/CPU1_DIMM_C0, 32 GB, DDR4, 2666 MHz, Micron, 36ASF4G72PZ-2G6D2 36ASF4G72PZ-2G6D2 36ASF4G72PZ-2G6D2 36ASF4G72PZ-2G6D2

Memory Module: NODE 1/CPU1_DIMM_D0, 32 GB, DDR4, 2666 MHz, Micron, 36ASF4G72PZ-2G6D2 36ASF4G72PZ-2G6D2 36ASF4G72PZ-2G6D2 36ASF4G72PZ-2G6D2

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x7BF), wl0: Nov
9 2017 09:46:34 version 9.100.30.0.32.1.18 FWID 01-57236d12

Bluetooth: Version 6.0.3f4, 3 services, 27 devices, 1 incoming serial ports

Network Service: Ethernet, Ethernet, en0

Network Service: Wi-Fi, AirPort, en1

PCI Card: pci1b4b,9220, AHCI Controller, Thunderbolt@184,0,0

PCI Card: Universal Audio Apollo Twin - SOLO, Other Multimedia, Thunderbolt@68,0,0

Serial ATA Device: LaCie
2big v2 THB USB3 Raid 0, 6 TB

Serial ATA Device: MARVELL VIRTUAL

USB Device: USB 3.0 Bus

USB Device: Card Reader

USB Device: Logitech Webcam C930e

USB Device: Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter

USB Device: Gaming Mouse G502

USB Device: AppleUSBVHCIBCE

USB Device: Headset

USB Device: iBridge ALS

USB Device: iBridge FaceTime HD Camera (Built-in)

USB Device: iBridge

Thunderbolt Bus: iMac Pro, Apple Inc., 25.4

Thunderbolt Device: Apollo Twin, Universal Audio, Inc., 3, 7.1

Thunderbolt Bus: iMac Pro, Apple Inc., 25.4

Thunderbolt Device: 2big TBT2 USB3, LaCie, 1, 22.1

iMac Pro (2017), iOS 11.2.2, Restart / Crashing

Posted on Jan 12, 2018 4:02 PM

252 replies

May 3, 2018 8:33 AM in response to sugaraspa

My iMac Pro (second one) don't randomly shut down/restart sinece I started to choose "no sleep" in energy settings (it's on 24/7). I'm in production now and I will use this one 11 month (still can get a new one first year) - IF Apple havn't fixed this issue untill then. I will get a new one...and do the same with that one, use it for 11 month. Maybe I can get a new iMacPro every year for a decade...just because they are to lazy to fix the problem. :-D

May 11, 2018 4:03 AM in response to nickatnyte_

Same exact problem. I was fine for the 1st month -- now anytime I walk away from the iMac Pro -- the darn thing crashes and restarts. Very frustrating. I have tried various things to troubleshoot -- but convinced it is. hardware issue. What should I do?

May 13, 2018 10:38 AM in response to nickatnyte_

Sunday, May 13, 2018

Same problem here, since last update to 10.13.4.

Now installing the Security Update 20018-001.

Perhaps this will help.

High Sierra v10.13.4 (17E199) on a new (late 2017) iMac Pro, 3.2 HGz Intel Xeon W, 1Tb SSD (APFS)

May 13, 2018 11:18 PM in response to nickatnyte_

I had the same problem, with the same error codes. Disabling "put hard disks to sleep", as suggested by our local mac admin, and in another reply here, has stopped it from happening.

Our theory is that it has to do with the SSD encryption not playing well with hard disk sleep. One idea is that the operating system wakes up quicker than the security hardware, and accesses the disk before it has been "unlocked". The system sees random garbage and crashes.

So waiting for an Apple fix, it would seem that some users can stop it from happening by disabling "put hard disks to sleep". Since it's an SSD, putting it "to sleep" is gibberish anyways.

May 14, 2018 12:30 AM in response to Viktor Fougstedt1

I got really excited by your response as it's one of the first suggestions that seems to make sense.

Unfortunately though, I realized that I've already disabled the feature that puts the SSD to sleep, and it's not done the trick (I'm on my third iMac Pro 😟)

I have noticed though that it goes through phases of rebooting multiple times per day, to not doing it at all for days on end, maybe that's what you're in now?

Let us know how it works out your side though, and if this solves it, or if you have any other thoughts/suggestions - most of us are willing to try just about anything by now.

May 17, 2018 8:30 AM in response to sugaraspa

I unticked "Put hard disks to sleep when possible" seven days ago today, and have not had a single restart since then. My other Energy Saver settings are "Prevent computer from sleeping" active, the other four inactive.

High Sierra 10.13.4.

If nothing else this should give Apple something to go on. With the "Put hard disks to sleep" option ticked, I had a crash as soon as I left my mac alone for too long, since I unticked it I haven't had a single crash.

My gut feeling is that this is a software-correctable bug, but possibly one which is triggered by hardware being at the edge of specs. Maybe my hardware is slightly closer to average and only triggered the bug on hard disk sleep, while others' hardware is a little closer to the spec edge and trigger the bug on other events as well...

If I have a new crash I will post here immediately again.

May 17, 2018 8:48 AM in response to newmediagroup

I likewise have not had the put hard disks to sleep box checked and still have the random restarts with the same error.

I use Final Cut Pro a great deal with this unit -- and it seems to occur less frequently when I have that program shut down. It also never happens when I manually put the iMac Pro to sleep.

What is maddening to me is the lack of feedback from Apple. Obviously many people are experiencing this issue. I have sent it in several times, and don't have the time in my work day to sit on the phone with support. Each of us invested big money into not just these units -- but to whole homes and offices chalk full of Apple products. A simple "We see the problem and we are working on a solution" would do a lot to assuage my disappointment - which is turning to anger.

$7,000 computers should not randomly crash and restart. Fix it.

lienffur

Level 1

4 points

May 17, 2018 10:28 AM in response to Sean O'Bryan

I’m willing to be that if all of us that are experiencing this issue start openly posting about it on Twitter, Facebook etc, copying Apple in on messages, things might start moving.

Something along the lines of ‘Don’t spend your money on one of these, all the time they have crashing issues which Apple won’t acknowledge ...’

May 20, 2018 11:55 AM in response to newmediagroup

Alas, nothing has worked for me.

I do notice that there are days, even about a week or more, where nothing happens and I think/hope all has been corrected, but nothing.

Would love to hear if you experience any more problems, or if indeed they're gone for good, please keep in touch.

May 21, 2018 10:38 AM in response to sugaraspa

Sugaraspa, Have you installed the latest Apple Security Update?

I assume you are running 10.13.4, right?

Build 17E202?

My issues, so far it's been about a week or so, seem to have vanished after having installed the update.

May 27, 2018 6:04 AM in response to nickatnyte_

I'm also investigating this problem from Belgium. In my case, compressor seems to be responsible for nearly all restarts and freezes. After a lot of testing I narrowed it down to a job I'm doing where I have to compress old DV-Pal movs (+30min movies) to H264 movs. In the activity monitor CompressorTranscoderX goes up first and then falls back to 4 procent. Then pretty much everything I do will cause the computer to freeze up or restart.

Next step I compressed a bunch of +45 min prores movs to H264 movs and everything remained stable.

I then tried to compress the dv-pal movs to prores and everything remained stable... In the Activity Monitor CompressorTranscoderX even went up to 780 procent. Very nice. The job was done at a tremendous speed!

So... DV-pal quicktime to H264 (any container) is the elephant in my room here.

What conclusion get we draw?

1) DV-Pal to H264 is a VERY complicated task and asks a lot of computing power which makes the system crash? So there is something wrong with the system (hard- or software)

2) There is something up with the Pro Video Formats

3) There is something up with compressor...

Feel free to add your own reasoning, guys 'n galls.

Monday, I will mail these conclusions to a pro apps specialist at Apple Care and see if he can upgrade this to engineering.

May 27, 2018 6:35 AM in response to newmediagroup

It’s been mentioned a few times that this occurs with brand new iMacs right out of the box with absolutely nothing installed. Consequently it’s not your software. I myself have gone three weeks with no problem then had it happen three nights in a row, no rhyme or reason to it. On my third iMac, same issue persists, it’s an Apple production issue without a doubt.

May 27, 2018 6:36 AM in response to newmediagroup

Thanks for the reply! Let me add the result of some new tests.

After having compressed the old DV-Pal movies to prores successfully, I then tried to recompress these proresfiles to H264.

And yes, there he went again. Not as fast as when I tried the DV-Pal to H264 route, but nevertheless. The machine couldn't finish the task...

In my case I have all the latest installs and updates. It is not related to peripherals (adaptors, screens, disks). My system is pretty basic. FCPX, Compressor, Adobe PS, Resolve Studio

I don't have a builtnumber next to my OS version

May 27, 2018 6:39 AM in response to HappyPappy

Yeah, but look, if it were an apple production issue, pretty much everybody who ever bought an iMac Pro would be complaining (as these machines are not being used to do wordprocessing).

So, is it software related or is the production quality of the iMac Pro's not consistent?

May 27, 2018 6:47 AM in response to INvisibleART

Production issue as in OS and/or hardware in combination. Personally I treat them as the same and it’s up to apple to fix it. I’ve gone through the process with Apple support twice, uninstalling, reinstalling Mac OS with and without time machine backups, enabled and disabled all kinds of power options, resetting smc, disabled system integrity protection, had my iMac replaced twice and the issue is still ther and occurs with no software other than Mac OS installed. If that’s not a production issue don’t know what is.

iMac Pro restarting because of a problem?