3

My MacBook Pro 16 inch, manufactured in March 2020 - running Catalina 10.15.4, will reboot randomly at times, citing a kernel panic - the full log is listed below. Moreover, my USB-C ports don't work, for example, if I plug in my usb flash drive, my computer simply thinks nothing is plugged in. Only after having restarted the MacBook Pro 💻 does it recognize the flash drive. This goes with anything connected to the MacBook including monitors. The kernel panic can also be replicated whenever I plug in and unplug USB devices from the USB-C ports, but this does not happen every time, only at some instances. I have already tried resetting NVRAM, SMC, reinstalling the OS, and enrolling in the beta program with no avail. I have also ran the APPLE Hardware Diagnostic Test and it said nothing was wrong with my computer.

Interestingly enough, I also use bootcamp with windows 10 pro, and have never had random restarts when using windows, this happens only on MacOS. Moreover, on windows, the USB-C ports work perfectly fine, always recognizing any peripherals connected to the ports. Windows 10 runs better on my MacBook Pro than MacOS does, and I find this upsetting and awkward.

Any help or suggestions is appreciated.

Update: sent the unit Apple for a repair, they repaired it for free since it was covered under warranty. They replaced the logic board. My unit works fine now.

panic(cpu 0 caller 0xffffff7f81f22399): "DSB0(MacBookPro16,1): thunderbolt power on failed 0xffffffff\n"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/IOPCIFamily/IOPCIFamily-370.100.21/IOPCIBridge.cpp:1398
Backtrace (CPU 0), Frame : Return Address
0xffffff81f15439e0 : 0xffffff80013215cd 
0xffffff81f1543a30 : 0xffffff800145a3c5 
0xffffff81f1543a70 : 0xffffff800144bf7e 
0xffffff81f1543ac0 : 0xffffff80012c7a40 
0xffffff81f1543ae0 : 0xffffff8001320c97 
0xffffff81f1543be0 : 0xffffff8001321087 
0xffffff81f1543c30 : 0xffffff8001ac2c7c 
0xffffff81f1543ca0 : 0xffffff7f81f22399 
0xffffff81f1543cc0 : 0xffffff7f81f09fcf 
0xffffff81f1543d20 : 0xffffff7f81f0a180 
0xffffff81f1543d60 : 0xffffff7f81f0a327 
0xffffff81f1543da0 : 0xffffff7f81f0a4fc 
0xffffff81f1543dc0 : 0xffffff7f81f086f6 
0xffffff81f1543e10 : 0xffffff7f81f1301f 
0xffffff81f1543e30 : 0xffffff8001a14e04 
0xffffff81f1543ea0 : 0xffffff8001a14c0a 
0xffffff81f1543ec0 : 0xffffff8001363545 
0xffffff81f1543f40 : 0xffffff8001363071 
0xffffff81f1543fa0 : 0xffffff80012c713e 
      Kernel Extensions in backtrace:
         com.apple.iokit.IOPCIFamily(2.9)[1B1F3BBB-9212-3CF9-94F8-8FEF0D3ACEC4]@0xffffff7f81f01000->0xffffff7f81f39fff

BSD process name corresponding to current thread: kernel_task

Mac OS version:
19E287

Kernel version:
Darwin Kernel Version 19.4.0: Wed Mar  4 22:28:40 PST 2020; root:xnu-6153.101.6~15/RELEASE_X86_64
Kernel UUID: AB0AA7EE-3D03-3C21-91AD-5719D79D7AF6
Kernel slide:     0x0000000001000000
Kernel text base: 0xffffff8001200000
__HIB  text base: 0xffffff8001100000
System model name: MacBookPro16,1 (Mac-E1008331FDC96864)
System shutdown begun: NO

System uptime in nanoseconds: 20168901642
last loaded kext at 12991334792: @kext.AMDRadeonX6100HWLibs 1.0 (addr 0xffffff7f84c8a000, size 41406464)
loaded kexts:
@kext.AMDRadeonX6000    3.0.8
@kext.AMDRadeonServiceManager   3.0.8
>!AGraphicsDevicePolicy 5.1.16
@fileutil   20.036.15
@AGDCPluginDisplayMetrics   5.1.16
>!AHV   1
|IOUserEthernet 1.0.1
|IO!BSerialManager  7.0.4f6
>pmtelemetry    1
>BCMWLANFirmware4355.Hashstore  1
>!AUpstreamUserClient   3.6.8
>AGPM   111.4.4
>X86PlatformShim    1.0.0
>!APlatformEnabler  2.7.0d0
@Dont_Steal_Mac_OS_X    7.0.0
>AGDCBacklightControl   5.1.16
>BCMWLANFirmware4377.Hashstore  1
>!A!IKBLGraphics    14.0.5
>!ABacklight    180.3
>BCMWLANFirmware4364.Hashstore  1
>BridgeAudioCommunication   6.70.3
>ACPI_SMC_PlatformPlugin    1.0.0
>!AThunderboltIP    3.1.4
>!ATopCaseHIDEventDriver    3430.1
>!AHIDALSService    1
>!A!ISlowAdaptiveClocking   4.0.0
>!AMCCSControl  1.11
>!AFIVRDriver   4.1.0
>!AAVEBridge    6.1
>!ABCMWLANBusInterfacePCIe  1
>!ABridgeAudio!C    6.70.3
>!AGFXHDA   100.1.426
>!A!IPCHPMC 2.0.1
>!A!ICFLGraphicsFramebuffer 14.0.5
>!AMuxControl2  5.1.16
@filesystems.ntfs   3.14.3
@filesystems.autofs 3.0
@filesystems.apfs   1412.101.1
>!AFileSystemDriver 3.0.1
>!AVirtIO   1.0
@filesystems.hfs.kext   522.100.5
@!AFSCompression.!AFSCompressionTypeDataless    1.0.0d1
@BootCache  40
@!AFSCompression.!AFSCompressionTypeZlib    1.0.0
@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
@kext.AMDRadeonX6100HWLibs  1.0
|IOAVB!F    840.3
@plugin.IOgPTPPlugin    840.3
|IOEthernetAVB!C    1.1.0
@kext.AMDRadeonX6000HWServices  3.0.8
>!ASSE  1.0
@!AGPUWrangler  5.1.16
@kext.AMDRadeonX6000Framebuffer 3.0.8
>!ABacklightExpert  1.1.0
>!AHDA!C    283.15
|IOHDA!F    283.15
>IOPlatformPluginLegacy 1.0.0
>!AHIDKeyboard  209
>!AHS!BDriver   3430.1
>IO!BHIDDriver  7.0.4f6
>!AActuatorDriver   3440.1
>!AMultitouchDriver 3440.1
>!AInputDeviceSupport   3440.8
|IOSlowAdaptiveClocking!F   1.0.0
|IO!BHost!CUARTTransport    7.0.4f6
|IO!BHost!CTransport    7.0.4f6
|IO!B!F 7.0.4f6
|IO!BPacketLogger   7.0.4f6
>!A!ILpssUARTv1 3.0.60
>!A!ILpssUARTCommon 3.0.60
>!AOnboardSerial    1.0
@kext.AMDSupport    3.0.8
>!ASMBus!C  1.0.18d1
>!ABCMWLANCore  1.0.0
>mDNSOffloadUserClient  1.0.1b8
>IOImageLoader  1.0.0
|IO80211!FV2    1200.12.2b1
>corecapture    1.0.4
|IOSkywalk!F    1
|IONDRVSupport  575.1
>!ASMBusPCI 1.0.14d1
|IOAccelerator!F2   438.4.5
@!AGraphicsDeviceControl    5.1.16
|IOGraphics!F   575.1
>!AGraphicsControl  5.1.16
>X86PlatformPlugin  1.0.0
>IOPlatformPlugin!F 6.0.0d8
>!AThunderboltEDMSink   4.2.3
>!AThunderboltDPOutAdapter  6.2.6
@kext.triggers  1.0
>usb.IOUSBHostHIDDevice 1.2
>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
>!AXsanScheme   3
|IOAudio!F  300.2
@vecLib.kext    1.2.0
|IOSerial!F 11
|IOSurface  269.11
@filesystems.hfs.encodings.kext 1
>!AEffaceableNOR    1.0
>usb.!UVHCIBCE  1.2
>usb.!UVHCI 1.2
>usb.!UVHCICommonBCE    1.0
>usb.!UVHCICommon   1.0
|IOBufferCopy!C 1.1.0
|IOBufferCopyEngine!F   1
|IONVMe!F   2.1.0
>!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    7.6.0
>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
$quarantine 4
$sandbox    300.0
@kext.!AMatch   1.0.0d1
>DiskImages 493.0.0
>!AFDEKeyStore  28.30
>!AEffaceable!S 1.0
>!AKeyStore 2
>!UTDM  489.101.1
|IOSCSIBlockCommandsDevice  422.101.1
>!ACredentialManager    1.0
>KernelRelayHost    1
>!ASEPManager   1.0.1
>IOSlaveProcessor   1
|IOTimeSync!F   840.3
|IONetworking!F 3.4
|IOUSBMass!SDriver  157.101.3
|IOSCSIArchitectureModel!F  422.101.1
|IO!S!F 2.1
|IOUSBHost!F    1.2
>!UHostMergeProperties  1.2
>usb.!UCommon   1.0
>!ABusPower!C   1.0
|CoreAnalytics!F    1
>!AMobileFileIntegrity  1.0.5
@kext.CoreTrust 1
|IOReport!F 47
>!AACPIPlatform 6.1
>!ASMC  3.1.9
>watchdog   1
|IOPCI!F    2.9
|IOACPI!F   1.4
@kec.pthread    1
@kec.Libm   1
@kec.corecrypto 1.0
  • I forgot to mention that I did indeed run the Apple Hardware Test, but it said nothing was wrong with my macbook. – Ziping Liu Apr 27 at 3:59
  • 1
    Same problem, near identical hardware unit. Only difference is mine continuously reboots. It'll stay on for about a minute then .... zap. – bishop May 23 at 0:41
  • 1
    @bishop I ended up sending the unit to Apple and they replaced the logic board. After having received the unit back from Apple everything works fine now. – Ziping Liu May 24 at 19:44
4

This sounds like a hardware fault, and you should return the laptop for repair.

It might be difficult during lockdown, but call Apple and ask them what the process is for returning the laptop.

| improve this answer | |
  • Do you think using usb-c docking stations that also carry power to the laptop would have damaged the usb-c ports? – Ziping Liu Apr 27 at 5:26
  • I mean it's possible, if they are faulty - but no, that's half of the point of USB-C. Power is bi-directional – Scott Earle Apr 27 at 5:28
  • 2
    It just makes me so angry since I have a macbook pro 13 inch for work and all my usb ports work just fine and I have never experienced a kernel panic on it before. Why the heck would this issue appear on a macbook pro 16 inch that costs twice as much. I'm also mailing it to apple for a repair. – Ziping Liu Apr 27 at 14:43

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