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Brand New 2020 MBP 13' Automatically Restarts after Shutdown

J

jayinla

macrumors regular
Original poster
Sep 17, 2010
151
90
His everyone. I'm having an interesting issue that I cannot figure out. About 70% to 80% of the time I shutdown the computer, it immediately will restart and leave a kernel panic message on reboot. This only happens though when I shut down in clamshell mode using an external monitor. If i shut down with the clamshell open it will not restart automatically. I have a copy of a error report but i cannot make sense of it. Anyone ever see something like this? Just an FYI I'm on 10.15.5 and it's a brand new MPB 13" 16gb memory, I5, 500gb ssd. Thanks in advance!
[automerge]1592800084[/automerge]
Here is just a brief part of the error report. Thanks again!

panic(cpu 0 caller 0xffffff7f8a9bbb76): "[IGPU] sendHostToGucMessage: Firmware communication error: no action response!\n"@icl/sched3/IGGuC.cpp:3626

Backtrace (CPU 0), Frame : Return Address


Kernel Extensions in backtrace:

com.apple.iokit.IOGraphicsFamily(576.1)[B1C0006F-E1F5-37D9-9548-5F918E92B422]@0xffffff7f8a3b9000->0xffffff7f8a409fff

dependency: com.apple.iokit.IOPCIFamily(2.9)[BE052F4D-9B80-3FCD-B36D-BACB7DEE0DF2]@0xffffff7f87112000

com.apple.iokit.IOAcceleratorFamily2(438.5.4)[D695D9DA-7C20-35D6-910F-E7A332A0F515]@0xffffff7f8a40a000->0xffffff7f8a4cdfff

dependency: com.apple.driver.AppleMobileFileIntegrity(1.0.5)[E35D090D-DB9E-3DD0-9723-651FA730AA13]@0xffffff7f8782e000

dependency: com.apple.iokit.IOPCIFamily(2.9)[BE052F4D-9B80-3FCD-B36D-BACB7DEE0DF2]@0xffffff7f87112000

dependency: com.apple.iokit.IOSurface(269.11)[F1E7389D-2807-3C5D-8A7F-5422542E867F]@0xffffff7f88c78000

dependency: com.apple.iokit.IOGraphicsFamily(576.1)[B1C0006F-E1F5-37D9-9548-5F918E92B422]@0xffffff7f8a3b9000

dependency: com.apple.iokit.IOReportFamily(47)[1FB49168-0280-3F04-A99A-F830C915E994]@0xffffff7f87049000

com.apple.driver.AppleIntelICLGraphics(14.0.6)[2C4498C3-E315-3C13-976D-7B28C0103CCF]@0xffffff7f8a92c000->0xffffff7f8aa6afff

dependency: com.apple.iokit.IOPCIFamily(2.9)[BE052F4D-9B80-3FCD-B36D-BACB7DEE0DF2]@0xffffff7f87112000

dependency: com.apple.iokit.IOSurface(269.11)[F1E7389D-2807-3C5D-8A7F-5422542E867F]@0xffffff7f88c78000

dependency: com.apple.iokit.IOGraphicsFamily(576.1)[B1C0006F-E1F5-37D9-9548-5F918E92B422]@0xffffff7f8a3b9000

dependency: com.apple.iokit.IOAcceleratorFamily2(438.5.4)[D695D9DA-7C20-35D6-910F-E7A332A0F515]@0xffffff7f8a40a000
 
Last edited:
I can confirm that I experience the same issue as you, in approximately the same
frequency:

Code: 
panic(cpu 0 caller 0xffffff7f87a4cb76): "[IGPU] sendHostToGucMessage: Firmware communication error: no action response!\n"@icl/sched3/IGGuC.cpp:3626
Backtrace (CPU 0), Frame : Return Address
0xffffffa3d63cb2f0 : 0xffffff800371f5cd
0xffffffa3d63cb340 : 0xffffff8003858b05
0xffffffa3d63cb380 : 0xffffff800384a68e
0xffffffa3d63cb3d0 : 0xffffff80036c5a40
0xffffffa3d63cb3f0 : 0xffffff800371ec97
0xffffffa3d63cb4f0 : 0xffffff800371f087
0xffffffa3d63cb540 : 0xffffff8003ec27cc
0xffffffa3d63cb5b0 : 0xffffff7f87a4cb76
0xffffffa3d63cb5f0 : 0xffffff7f879d621d
0xffffffa3d63cb620 : 0xffffff7f879d44b5
0xffffffa3d63cb650 : 0xffffff7f879d6910
0xffffffa3d63cb6b0 : 0xffffff7f879d748f
0xffffffa3d63cb6f0 : 0xffffff7f87a4cb0e
0xffffffa3d63cb730 : 0xffffff7f879d621d
0xffffffa3d63cb760 : 0xffffff7f879d4522
0xffffffa3d63cb790 : 0xffffff7f879d68a0
0xffffffa3d63cb7f0 : 0xffffff7f879e1c4b
0xffffffa3d63cb810 : 0xffffff7f874fe00c
0xffffffa3d63cb850 : 0xffffff7f87544599
0xffffffa3d63cb890 : 0xffffff7f874a3d58
0xffffffa3d63cb9d0 : 0xffffff7f8748ee16
0xffffffa3d63cba60 : 0xffffff7f8749640f
0xffffffa3d63cbb00 : 0xffffff8003e01b6f
0xffffffa3d63cbb70 : 0xffffff8003e95d4f
0xffffffa3d63cbbd0 : 0xffffff8003e02359
0xffffffa3d63cbc20 : 0xffffff8003e95309
0xffffffa3d63cbce0 : 0xffffff8003c82106
0xffffffa3d63cbda0 : 0xffffff8003c9c7a9
0xffffffa3d63cbee0 : 0xffffff7f87bb8a95
0xffffffa3d63cbf20 : 0xffffff7f87b95665
0xffffffa3d63cbf40 : 0xffffff8003d87097
0xffffffa3d63cbfa0 : 0xffffff80036c6206
      Kernel Extensions in backtrace:
         com.apple.iokit.IOGraphicsFamily(576.1)[B1C0006F-E1F5-37D9-9548-5F918E92B422]@0xffffff7f87485000->0xffffff7f874d5fff
            dependency: com.apple.iokit.IOPCIFamily(2.9)[BE052F4D-9B80-3FCD-B36D-BACB7DEE0DF2]@0xffffff7f84112000
         com.apple.iokit.IOAcceleratorFamily2(438.5.4)[D695D9DA-7C20-35D6-910F-E7A332A0F515]@0xffffff7f874fd000->0xffffff7f875c0fff
            dependency: com.apple.driver.AppleMobileFileIntegrity(1.0.5)[E35D090D-DB9E-3DD0-9723-651FA730AA13]@0xffffff7f8482e000
            dependency: com.apple.iokit.IOPCIFamily(2.9)[BE052F4D-9B80-3FCD-B36D-BACB7DEE0DF2]@0xffffff7f84112000
            dependency: com.apple.iokit.IOSurface(269.11)[F1E7389D-2807-3C5D-8A7F-5422542E867F]@0xffffff7f85c78000
            dependency: com.apple.iokit.IOGraphicsFamily(576.1)[B1C0006F-E1F5-37D9-9548-5F918E92B422]@0xffffff7f87485000
            dependency: com.apple.iokit.IOReportFamily(47)[1FB49168-0280-3F04-A99A-F830C915E994]@0xffffff7f84049000
         com.apple.driver.AppleIntelICLGraphics(14.0.6)[2C4498C3-E315-3C13-976D-7B28C0103CCF]@0xffffff7f879bd000->0xffffff7f87afbfff
            dependency: com.apple.iokit.IOPCIFamily(2.9)[BE052F4D-9B80-3FCD-B36D-BACB7DEE0DF2]@0xffffff7f84112000
            dependency: com.apple.iokit.IOSurface(269.11)[F1E7389D-2807-3C5D-8A7F-5422542E867F]@0xffffff7f85c78000
            dependency: com.apple.iokit.IOGraphicsFamily(576.1)[B1C0006F-E1F5-37D9-9548-5F918E92B422]@0xffffff7f87485000
            dependency: com.apple.iokit.IOAcceleratorFamily2(438.5.4)[D695D9DA-7C20-35D6-910F-E7A332A0F515]@0xffffff7f874fd000
         com.carbonblack.cbsystemproxy.62fc7(1912.12.62f7)[C0CEC577-BD24-378B-942D-2C97EF23BED7]@0xffffff7f87b8f000->0xffffff7f87b9cfff
         com.carbonblack.CbOsxSensorProcmon(1912.12.62f7)[65965F60-902B-3DF2-B90D-FDD8F9A9642C]@0xffffff7f87b9d000->0xffffff7f87bbffff
            dependency: com.carbonblack.cbsystemproxy.62fc7(1912.12.62fc7)[C0CEC577-BD24-378B-942D-2C97EF23BED7]@0xffffff7f87b8f000
BSD process name corresponding to current thread: launchd
Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev
Mac OS version:
19F101
Kernel version:
Darwin Kernel Version 19.5.0: Tue May 26 20:41:44 PDT 2020; root:xnu-6153.121.2~2/RELEASE_X86_64
Kernel UUID: 54F1A78D-6F41-32BD-BFED-4381F9F6E2EF
Kernel slide:     0x0000000003400000
Kernel text base: 0xffffff8003600000
__HIB  text base: 0xffffff8003500000
System model name: MacBookPro16,2 (Mac-5F9802EFE386AA28)
System shutdown begun: YES
System uptime in nanoseconds: 33002590259186
last loaded kext at 10535989668864: >AudioAUUC    1.70 (addr 0xffffff7f87953000, size 28672)
last unloaded kext at 31537129679867: >usb.IOUSBHostHIDDevice    1.2 (addr 0xffffff7f8790d000, size 45056)
loaded kexts:
com.cisco.kext.acsock    4.8.0
org.virtualbox.kext.VBoxNetAdp    6.1.10
com.carbonblack.CbOsxSensorNetmon    1912.12.62fc7
org.virtualbox.kext.VBoxNetFlt    6.1.10
org.virtualbox.kext.VBoxUSB    6.1.10
com.carbonblack.CbOsxSensorProcmon    1912.12.62fc7
com.carbonblack.cbsystemproxy.62fc7    1912.12.62fc7
org.virtualbox.kext.VBoxDrv    6.1.10
>usb.!UHostBillboardDevice    1.0
>!AGraphicsDevicePolicy    5.2.4
@fileutil    20.036.15
@AGDCPluginDisplayMetrics    5.2.4
>!AHV    1
|IOUserEthernet    1.0.1
|IO!BSerialManager    7.0.5f6
>!AUpstreamUserClient    3.6.8
>AGPM    111.4.4
>X86PlatformShim    1.0.0
>!APlatformEnabler    2.7.0d0
>pmtelemetry    1
>!A!IICLGraphics    14.0.6
@Dont_Steal_Mac_OS_X    7.0.0
>!AThunderboltIP    3.1.4
>BridgeAudioCommunication    6.70.7
>!ABacklight    180.3
>!ATopCaseHIDEventDriver    3430.1
>!ABridgeAudio!C    6.70.7
>!AGFXHDA    100.1.428
>!A!IPCHPMC    2.0.1
>!AHIDALSService    1
>!A!IICLLPGraphicsFramebuffer    14.0.6
>!A!ISlowAdaptiveClocking    4.0.0
>!AAVEBridge    6.1
>!AMCCSControl    1.14
@filesystems.autofs    3.0
@filesystems.apfs    1412.120.2
>BCMWLANFirmware4355.Hashstore    1
>BCMWLANFirmware4364.Hashstore    1
>BCMWLANFirmware4377.Hashstore    1
>!ABCMWLANBusInterfacePCIe    1
@filesystems.hfs.kext    522.100.5
@BootCache    40
@!AFSCompression.!AFSCompressionTypeDataless    1.0.0d1
@!AFSCompression.!AFSCompressionTypeZlib    1.0.0
>!AVirtIO    1.0
@private.KextAudit    1.0
>!ASmartBatteryManager    161.0.0
>!AACPIButtons    6.1
>!ASMBIOS    2.1
>!AACPIEC    6.1
>!AAPIC    1.7
$!AImage4    1
@nke.applicationfirewall    303
$TMSafetyNet    8
@!ASystemPolicy    2.0.0
|EndpointSecurity    1
>!UAudio    323.1
>!A!BHIDKeyboard    209
>usb.!UHub    1.2
>!AGraphicsControl    5.2.4
|IOUSBUserClient    900.4.2
|IOAVB!F    850.1
>!ASSE    1.0
@!AGPUWrangler    5.2.4
>!ABacklightExpert    1.1.0
>X86PlatformPlugin    1.0.0
>!AHS!BDriver    3430.1
>IO!BHIDDriver    7.0.5f6
>!AActuatorDriver    3440.1
>!AMultitouchDriver    3440.1
>!AInputDeviceSupport    3440.8
|IONDRVSupport    576.1
>IOPlatformPlugin!F    6.0.0d8
>!AHIDKeyboard    209
|IO!BHost!CUARTTransport    7.0.5f6
|IO!BHost!CTransport    7.0.5f6
>!A!ILpssUARTv1    3.0.60
>!A!ILpssUARTCommon    3.0.60
>!AOnboardSerial    1.0
@!AGraphicsDeviceControl    5.2.4
|IOAccelerator!F2    438.5.4
|IOSlowAdaptiveClocking!F    1.0.0
>!ASMBus!C    1.0.18d1
|IOGraphics!F    576.1
@plugin.IOgPTPPlugin    840.3
|IOEthernetAVB!C    1.1.0
@kext.triggers    1.0
>usb.cdc.ncm    5.0.0
>usb.cdc    5.0.0
>usb.networking    5.0.0
>usb.!UHostCompositeDevice    1.2
>usb.!UVHCIBCE    1.2
>usb.!UVHCI    1.2
>usb.!UVHCICommonBCE    1.0
>usb.!UVHCICommon    1.0
>!AEffaceableNOR    1.0
|IOBufferCopy!C    1.1.0
|IOBufferCopyEngine!F    1
|IONVMe!F    2.1.0
>!ABCMWLANCore    1.0.0
>mDNSOffloadUserClient    1.0.1b8
>IOImageLoader    1.0.0
|IO80211!FV2    1200.12.2b1
>corecapture    1.0.4
|IOSkywalk!F    1
>!AThunderboltPCIDownAdapter    2.5.4
>!AThunderboltDPInAdapter    6.2.6
>!AThunderboltDPAdapter!F    6.2.6
>!AHPM    3.4.4
>!A!ILpssI2C!C    3.0.60
>!A!ILpssDmac    3.0.60
>!A!ILpssI2C    3.0.60
>!AThunderboltNHI    5.8.6
|IOThunderbolt!F    7.6.1
>usb.!UXHCIPCI    1.2
>usb.!UXHCI    1.2
|IOSurface    269.11
@filesystems.hfs.encodings.kext    1
|IOAudio!F    300.2
@vecLib.kext    1.2.0
|IOSerial!F    11
|IOUSB!F    900.4.2
>!AEFINVRAM    2.1
>!AEFIRuntime    2.1
>!ASMCRTC    1.0
|IOSMBus!F    1.1
|IOHID!F    2.0.0
$quarantine    4
$sandbox    300.0
@kext.!AMatch    1.0.0d1
>!AKeyStore    2
>!UTDM    489.120.1
|IOSCSIBlockCommandsDevice    422.120.3
>!ACredentialManager    1.0
>KernelRelayHost    1
>!ASEPManager    1.0.1
>IOSlaveProcessor    1
>!AFDEKeyStore    28.30
>!AEffaceable!S    1.0
>!AMobileFileIntegrity    1.0.5
@kext.CoreTrust    1
|CoreAnalytics!F    1
|IOTimeSync!F    840.3
|IONetworking!F    3.4
>DiskImages    493.0.0
|IO!B!F    7.0.5f6
|IO!BPacketLogger    7.0.5f6
|IOUSBMass!SDriver    157.121.1
|IOSCSIArchitectureModel!F    422.120.3
|IO!S!F    2.1
|IOUSBHost!F    1.2
>usb.!UCommon    1.0
>!UHostMergeProperties    1.2
>!ABusPower!C    1.0
|IOReport!F    47
>!AACPIPlatform    6.1
>!ASMC    3.1.9
>watchdog    1
|IOPCI!F    2.9
|IOACPI!F    1.4
@kec.pthread    1
@kec.corecrypto    1.0
@kec.Libm    1
 
I think that this issue has something to do with the Thunderbolt 3 dockingstation problem - it should be Right here in this forum. The problem seems to be, that there is something wrong with apples thunderbolt implementation with the 2020 MBP (they changed the connection in the hardware). I can’t use any of my thunderbolt accessories without a kernel panic after disconnecting the thunderbolt cable after a sleep.

the mentioned LG Monitor seems to also use the thunderbolt connection.
For at least a quick work around you should use another port with a usb c cable (DisplayPort to usb c). Sorry that I could not help further.
 
Don't worry, I posted my answer as well as the link so that other people can find it ;)
 
I encounter the same issue with Big Sur but not with Catalina. 🤷🏻‍♂️
Any solution to share?
 
I recently had this once, with macOS BigSur 11.3.1, two Eizo EV3285 via USB-C.
It happened while I watched a Youtube Video.

MacMini 2018 / i7 / 32GB / 1TB.


panic(cpu 0 caller 0xffffff7faa099461): "[IGPU] sendHostToGucMessage: Firmware communication error: no action response!\n"@skl/sched3/IGGuC.cpp:3468 Backtrace (CPU 0), Frame : Return Address 0xffffffa1386ab9c0 : 0xffffff801148e02d 0xffffffa1386aba10 : 0xffffff80115d48e3 0xffffffa1386aba50 : 0xffffff80115c4eda 0xffffffa1386abaa0 : 0xffffff8011432a2f 0xffffffa1386abac0 : 0xffffff801148d84d 0xffffffa1386abbe0 : 0xffffff801148db43 0xffffffa1386abc50 : 0xffffff8011c9d68a 0xffffffa1386abcc0 : 0xffffff7faa099461 0xffffffa1386abd00 : 0xffffff7faa0143e3 0xffffffa1386abd30 : 0xffffff7faa0125c0 0xffffffa1386abd60 : 0xffffff7faa014ae2 0xffffffa1386abdc0 : 0xffffff7faa0155cb 0xffffffa1386abe00 : 0xffffff7faa012c1a 0xffffffa1386abe40 : 0xffffff7faa09917d 0xffffffa1386abe80 : 0xffffff7faa010e76 0xffffffa1386abee0 : 0xffffff8011bf0340 0xffffffa1386abf30 : 0xffffff8011beeaae 0xffffffa1386abf70 : 0xffffff8011bee096 0xffffffa1386abfa0 : 0xffffff801143213e Kernel Extensions in backtrace: com.apple.driver.AppleIntelKBLGraphics(16.0.2)[F215ACB8-73AE-3891-B6D8-F17299303599]@0xffffff7faa00f000->0xffffff7faa0c6fff dependency: com.apple.iokit.IOAcceleratorFamily2(442.9)[5523A2B9-D179-3560-9738-E720033965D7]@0xffffff7faa91a000->0xffffff7faa984fff dependency: com.apple.iokit.IOGraphicsFamily(585.1)[CC341A35-707F-3C8B-8EFD-925F742166A1]@0xffffff7faaa9b000->0xffffff7faaac9fff dependency: com.apple.iokit.IOPCIFamily(2.9)[B99B3B05-71B8-3178-8C27-E0A0ACA9F16E]@0xffffff8013f5f000->0xffffff8013f87fff dependency: com.apple.iokit.IOSurface(290.7)[6AE0FD31-9444-350A-88A6-620DF634FF78]@0xffffff8014089000->0xffffff80140a5fff Process name corresponding to current thread: kernel_task Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev Mac OS version: 20E241 Kernel version: Darwin Kernel Version 20.4.0: Thu Apr 22 21:46:47 PDT 2021; root:xnu-7195.101.2~1/RELEASE_X86_64 Kernel UUID: 068F99A3-1DB3-31C0-87D5-09942F122BB6 KernelCache slide: 0x0000000011200000 KernelCache base: 0xffffff8011400000 Kernel slide: 0x0000000011210000 Kernel text base: 0xffffff8011410000 __HIB text base: 0xffffff8011300000 System model name: Macmini8,1 (Mac-7BA5B2DFE22DDD8C) System shutdown begun: NO Hibernation exit count: 0 System uptime in nanoseconds: 32219313546492 Last Sleep: absolute base_tsc base_nano Uptime : 0x00001d4da4bd29fb Sleep : 0x0000000000000000 0x0000000000000000 0x0000000000000000 Wake : 0x0000000000000000 0x000000045b71953a 0x0000000000000000 last started kext at 54487038437: >AudioAUUC 1.70 (addr 0xffffff7faa78c000, size 12288) loaded kexts: >AudioAUUC 1.70 >usb.!UHostBillboardDevice 1.0 >!A!BMultitouch 99 >AGPM 122 >!APlatformEnabler 2.7.0d0 >X86PlatformShim 1.0.0 @filesystems.autofs 3.0 @fileutil 20.036.15 >!AUpstreamUserClient 3.6.8 >!AMCCSControl 1.14 >!AGraphicsDevicePolicy 6.2.9 >!A!IKBLGraphics 16.0.2 >BridgeAudioCommunication 140.4 >!ABridgeAudio!C 140.4 @AGDCPluginDisplayMetrics 6.2.9 >pmtelemetry 1 |IOUserEthernet 1.0.1 >usb.!UUserHCI 1 |IO!BSerialManager 8.0.4d18 @Dont_Steal_Mac_OS_X 7.0.0 >!AHV 1 >!ADiskImages2 1 >!A!ICFLGraphicsFramebuffer 16.0.2 >!AGFXHDA 100.1.433 >!AAVEBridge 6.1 >!AFIVRDriver 4.1.0 >ACPI_SMC_PlatformPlugin 1.0.0 >!A!IPCHPMC 2.0.1 >!AThunderboltIP 4.0.3 >!A!ISlowAdaptiveClocking 4.0.0 >Core!SFsck 554 |SCSITaskUserClient 436.100.4 >BCMWLANFirmware4378.Hashstore 1 >BCMWLANFirmware4377.Hashstore 1 >BCMWLANFirmware4364.Hashstore 1 >BCMWLANFirmware4355.Hashstore 1 >!AFileSystemDriver 3.0.1 @filesystems.tmpfs 1 @filesystems.hfs.kext 556.100.11 @BootCache 40 @!AFSCompression.!AFSCompressionTypeZlib 1.0.0 @!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1 >!ASDXC 1.9.0 |!ABCM5701Ethernet 11.0.0 >!ABCMWLANBusInterfacePCIeMac 1 @filesystems.apfs 1677.100.114 @private.KextAudit 1.0 >!AACPIButtons 6.1 >!ASMBIOS 2.1 >!AACPIEC 6.1 >!AAPIC 1.7 @!ASystemPolicy 2.0.0 @nke.applicationfirewall 311 |IOKitRegistryCompatibility 1 |EndpointSecurity 1 >!UAudio 405.39 >usb.!UHub 1.2 >IO!BHIDDriver 8.0.4d18 >!AMultitouchDriver 4440.3 >!AInputDeviceSupport 4400.35 @kext.triggers 1.0 >!ASMBus!C 1.0.18d1 >!AGraphicsControl 6.2.9 >!ASMBusPCI 1.0.14d1 |IOAVB!F 940.4 |IOEthernetAVB!C 1.1.0 |IOAccelerator!F2 442.9 |IONDRVSupport 585.1 >!AHDA!C 283.15 |IOHDA!F 283.15 |IOAudio!F 300.6.1 @vecLib.kext 1.2.0 >usb.IOUSBHostHIDDevice 1.2 @plugin.IOgPTPPlugin 980.4 |IO!BHost!CUARTTransport 8.0.4d18 |IO!BHost!CTransport 8.0.4d18 >IOPlatformPluginLegacy 1.0.0 >X86PlatformPlugin 1.0.0 >IOPlatformPlugin!F 6.0.0d8 >!A!ILpssUARTv1 3.0.60 >!A!ILpssUARTCommon 3.0.60 >!AOnboardSerial 1.0 >!AThunderboltEDMSink 5.0.3 >!AThunderboltDPOutAdapter 8.1.4 @!AGPUWrangler 6.2.9 @!AGraphicsDeviceControl 6.2.9 |IOGraphics!F 585.1 |IOSlowAdaptiveClocking!F 1.0.0 >Core!S 554 >usb.cdc.ecm 5.0.0 >usb.cdc.ncm 5.0.0 >usb.cdc 5.0.0 >usb.networking 5.0.0 >usb.!UHostCompositeDevice 1.2 >!AThunderboltPCIDownAdapter 4.1.1 >!AThunderboltDPInAdapter 8.1.4 >!AThunderboltDPAdapter!F 8.1.4 >!AHPM 3.4.4 >!A!ILpssI2C!C 3.0.60 >!A!ILpssI2C 3.0.60 >!A!ILpssDmac 3.0.60 >!ABSDKextStarter 3 |IOSurface 290.7 @filesystems.hfs.encodings.kext 1 >!ABCMWLANCoreMac 1.0.0 |IOSerial!F 11 |IO80211!FV2 1200.12.2b1 |IOSkywalk!F 1 >mDNSOffloadUserClient 1.0.1b8 >IOImageLoader 1.0.0 >corecapture 1.0.4 >!AXsanScheme 3 >!AThunderboltNHI 7.2.8 |IOThunderbolt!F 9.3.2 >usb.!UVHCIBCE 1.2 >usb.!UVHCICommonBCE 1.0 >usb.!UVHCI 1.2 >usb.!UVHCICommon 1.0 >!AEffaceableNOR 1.0 |IOBufferCopy!C 1.1.0 |IOBufferCopyEngine!F 1 |IONVMe!F 2.1.0 >usb.!UHostPacketFilter 1.0 |IOUSB!F 900.4.2 >usb.!UXHCIPCI 1.2 >usb.!UXHCI 1.2 >!AEFINVRAM 2.1 >!AEFIRuntime 2.1 >!ASMCRTC 1.0 |IOSMBus!F 1.1 |IOHID!F 2.0.0 $!AImage4 3.0.0 |IOTimeSync!F 980.4 |IONetworking!F 3.4 >DiskImages 493.0.0 |IO!B!F 8.0.4d18 |IOReport!F 47 |IO!BPacketLogger 8.0.4d18 $quarantine 4 $sandbox 300.0 @kext.!AMatch 1.0.0d1 |CoreAnalytics!F 1 >!ASSE 1.0 >!AKeyStore 2 >!UTDM 511.101.1 |IOUSBMass!SDriver 184.101.1 |IOSCSIBlockCommandsDevice 436.100.4 |IO!S!F 2.1 |IOSCSIArchitectureModel!F 436.100.4 >!AMobileFileIntegrity 1.0.5 @kext.CoreTrust 1 >!AFDEKeyStore 28.30 >!AEffaceable!S 1.0 >!ACredentialManager 1.0 >KernelRelayHost 1 |IOUSBHost!F 1.2 >!UHostMergeProperties 1.2 >usb.!UCommon 1.0 >!ABusPower!C 1.0 >!ASEPManager 1.0.1 >IOSlaveProcessor 1 >!AACPIPlatform 6.1 >!ASMC 3.1.9 |IOPCI!F 2.9 |IOACPI!F 1.4 >watchdog 1 @kec.pthread 1 @kec.corecrypto 11.1 @kec.Libm 1
 
jayinla said:
This only happens though when I shut down in clamshell mode using an external monitor.
Click to expand...

Is the external monitor thunderbolt? If you disconnect it does the problem go away?

There is a thread about panics (with a different error) when connected to a QNAP via thunderbolt. As long as I keep the QNAP disconnected the error does not occur. It has been reported to be fixed in 11.4. We'll see.
 
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