Mac OS Catalina 10.15 – Watchdog Timeout Kernel Panic

kernel-panic

In the last few days, when I shutdown my iMac, it takes a long long time, freezes, then restarts with this report – which is always basically the same. I have already reseted PRAM and SMC. If someone could help me out understand what's going on, it would be great.

panic(cpu 1 caller 0xffffff7f837afaae): watchdog timeout: no checkins from watchdogd in 302 seconds (5030 totalcheckins since monitoring last enabled), shutdown in progress
Backtrace (CPU 1), Frame : Return Address
0xffffff82bd8dbc40 : 0xffffff800211868d 
0xffffff82bd8dbc90 : 0xffffff8002252ab5 
0xffffff82bd8dbcd0 : 0xffffff800224463e 
0xffffff82bd8dbd20 : 0xffffff80020bea40 
0xffffff82bd8dbd40 : 0xffffff8002117d57 
0xffffff82bd8dbe40 : 0xffffff8002118147 
0xffffff82bd8dbe90 : 0xffffff80028bf328 
0xffffff82bd8dbf00 : 0xffffff7f837afaae 
0xffffff82bd8dbf10 : 0xffffff7f837af486 
0xffffff82bd8dbf50 : 0xffffff7f837c4d9c 
0xffffff82bd8dbfa0 : 0xffffff80020be13e 
      Kernel Extensions in backtrace:
         com.apple.driver.watchdog(1.0)[B6A95892-6C75-3CF5-A6CC-6D83F30FA1D5]@0xffffff7f837ae000->0xffffff7f837b6fff
         com.apple.driver.AppleSMC(3.1.9)[D2F0B610-83F8-3B84-B0BD-D9D0CC95A697]@0xffffff7f837b7000->0xffffff7f837d5fff
            dependency: com.apple.iokit.IOACPIFamily(1.4)[2956198D-24F2-3790-A9B2-1EAB9434B906]@0xffffff7f837a5000
            dependency: com.apple.driver.watchdog(1)[B6A95892-6C75-3CF5-A6CC-6D83F30FA1D5]@0xffffff7f837ae000
            dependency: com.apple.iokit.IOPCIFamily(2.9)[2F37AE58-E6B9-3B18-9092-3B80D34C334B]@0xffffff7f82b31000

BSD process name corresponding to current thread: kernel_task

Mac OS version:
19H15

Kernel version:
Darwin Kernel Version 19.6.0: Thu Oct 29 22:56:45 PDT 2020; root:xnu-6153.141.2.2~1/RELEASE_X86_64
Kernel UUID: 9B5A7191-5B84-3990-8710-D9BD9273A8E5
Kernel slide:     0x0000000001e00000
Kernel text base: 0xffffff8002000000
__HIB  text base: 0xffffff8001f00000
System model name: iMac14,2 (Mac-27ADBB7B4CEE8E61)
System shutdown begun: YES
Panic diags file available: YES (0x0)

System uptime in nanoseconds: 50625992870163
last loaded kext at 44848782795591: >usb.cdc.acm    5.0.0 (addr 0xffffff7f85fa3000, size 32768)
last unloaded kext at 44911847112129: >!UMergeNub   900.4.2 (addr 0xffffff7f85f77000, size 12288)
loaded kexts:
>!ATopCaseHIDEventDriver    3430.1
>AudioAUUC  1.70
@fileutil   20.036.15
>!APlatformEnabler  2.7.0d0
>AGPM   111.4.4
>X86PlatformShim    1.0.0
>!AMikeyHIDDriver   131
@filesystems.autofs 3.0
>!AMikeyDriver  283.15
>!AHDA  283.15
>!A!IHD5000Graphics 14.0.7
@AGDCPluginDisplayMetrics   5.2.6
>!A!IFramebufferAzul    14.0.7
>!AHV   1
|IOUserEthernet 1.0.1
|IO!BSerialManager  7.0.6f7
>pmtelemetry    1
@Dont_Steal_Mac_OS_X    7.0.0
>!ABacklight    180.3
>!AUpstreamUserClient   3.6.8
>!AMCCSControl  1.14
@GeForce    14.0.0
>eficheck   1
>!ASMCLMU   212
>!AThunderboltIP    3.1.4
>!ALPC  3.1
>!A!ISlowAdaptiveClocking   4.0.0
>!AVirtIO   1.0
@filesystems.hfs.kext   522.100.5
@!AFSCompression.!AFSCompressionTypeDataless    1.0.0d1
@BootCache  40
@!AFSCompression.!AFSCompressionTypeZlib    1.0.0
@filesystems.apfs   1412.141.1
@private.KextAudit  1.0
>!ASDXC 1.7.7
>AirPort.BrcmNIC    1400.1.1
|!ABCM5701Ethernet  10.3.5
>!AAHCIPort 341.140.1
>!ARTC  2.0
>!AACPIButtons  6.1
>!AHPET 1.8
>!ASMBIOS   2.1
>!AACPIEC   6.1
>!AAPIC 1.7
$!AImage4   1
@nke.applicationfirewall    303
$TMSafetyNet    8
@!ASystemPolicy 2.0.0
|EndpointSecurity   1
>usb.cdc.ncm    5.0.0
>usb.cdc    5.0.0
>!A!BHIDKeyboard    209
>!AHIDKeyboard  209
>!AMultitouchDriver 3440.1
>!AInputDeviceSupport   3440.8
>!AHS!BDriver   3430.1
>IO!BHIDDriver  7.0.6f7
@kext.triggers  1.0
>DspFuncLib 283.15
@kext.OSvKernDSPLib 529
|IOAVB!F    850.1
>!ABacklightExpert  1.1.0
>!ASMBus!C  1.0.18d1
|IOAccelerator!F2   438.7.3
>!ASMBusPCI 1.0.14d1
@nvidia.driver.NVDAGK100Hal 14.0.0
@nvidia.driver.NVDAResman   14.0.0
>!AThunderboltEDMSink   4.2.3
>X86PlatformPlugin  1.0.0
>IOPlatformPlugin!F 6.0.0d8
@!AGPUWrangler  5.2.6
@!AGraphicsDeviceControl    5.2.6
|IOSlowAdaptiveClocking!F   1.0.0
>!AHDA!C    283.15
|IOHDA!F    283.15
|IONDRVSupport  576.1
|IOGraphics!F   576.1
@plugin.IOgPTPPlugin    840.3
|Broadcom!BHost!CUSBTransport   7.0.6f7
|IO!BHost!CUSBTransport 7.0.6f7
|IO!BHost!CTransport    7.0.6f7
|IO!B!F 7.0.6f7
|IO!BPacketLogger   7.0.6f7
>usb.!UHub  1.2
>usb.networking 5.0.0
>usb.!UHostCompositeDevice  1.2
|IOAudio!F  300.2
@vecLib.kext    1.2.0
|IOSerial!F 11
@filesystems.hfs.encodings.kext 1
|IOSurface  269.11
>!AThunderboltDPOutAdapter  6.2.6
>!AThunderboltDPInAdapter   6.2.6
>!AThunderboltDPAdapter!F   6.2.6
>!AThunderboltPCIDownAdapter    2.5.4
|IOAHCIBlock!S  316.100.5
>!AThunderboltNHI   5.8.6
|IOThunderbolt!F    7.6.1
|IO80211!F  1200.12.2b1
>corecapture    1.0.4
|IOSkywalk!F    1
|IOUSB!F    900.4.2
|IOEthernetAVB!C    1.1.0
>mDNSOffloadUserClient  1.0.1b8
>usb.!UXHCIPCI  1.2
>usb.!UXHCI 1.2
|IOAHCI!F   290.0.1
>!AEFINVRAM 2.1
>!AEFIRuntime   2.1
|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
>!ASSE  1.0
>!AKeyStore 2
>!UTDM  489.120.1
|IOSCSIBlockCommandsDevice  422.120.3
>!ACredentialManager    1.0
>KernelRelayHost    1
>!ASEPManager   1.0.1
>IOSlaveProcessor   1
|IOUSBMass!SDriver  157.140.1
|IOSCSIArchitectureModel!F  422.120.3
|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
|IOTimeSync!F   840.3
|IONetworking!F 3.4
|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

Best Answer

The process to isolate kernel panics is the same on all recent macOS releases.

It can be work, so keep good notes of dates and times so when it’s time to figure out if it’s software or accessories or software, you spend less time doing the work needed to pinpoint the cause.

Related Solutions

MacOS – Kernel panic in old MacBook Pro after upgrading to El Capitan

I think I found your problem. It appears that you have one of the faulty Nvidia 9400m graphics cards in your computer. If you search on your model you will find lots of discussions (Apple Support, GoodBytes) about this system, and problems with the 9400m graphics card.

If you were running your system in “High Performance” graphics mode, then the system relied on the 9600m graphics card rather than the 9400m. So you would not have seen the dreaded flickering and green flash so many people reported on.

There is a fix, Apple released an EFI Firmware Update 2.8 for several systems including your MacBook in 2012.

But if you read through your kernel panic log you will see that you only have the 2.0 EFI Firmware in installed.

com.apple.driver.AppleEFINVRAM  2.0
com.apple.driver.AppleEFIRuntime    2.0

Hence the kernel panic you are seeing.

I would suggest that if you made a backup before you tried updating the system (you did make a backup right?) that you:

Boot your computer from your Snow Leopard pre-upgrade backup.
Go to  -> System Prefs -> Energy Saver and set your graphics card to High performance.
Try installing the EFI Firmware Update 2.8 from Snow Leopard.
NOTE: The installer will ONLY work from Mac OS X 10.5.8, 10.6.8 or 10.7.3. according to the Apple website.
Reboot to the internal drive, and the new El Capitan OS you already installed.

You might have to rerun the El Capitan installer again to get things working, but I have a feeling that you should be able to just boot up into El Capitan.

I hope this solves your problem.

ADDITION:
One additional workaround for this problem came to me from a friend.

You can try and disable (in Mavericks 10.9, Yosemite 10.10 and El Capitan 10.11) the Automatic Graphics Switching if you can boot into the the updated OS, and get to the System Prefs. This may disable the 9400m enough that you “might” not see the kernel panic again.

Mac suddenly shuts down and doesn’t respond

At first glance it appears to be a GPU issue, although that doesn't necessarily have to mean it's a hardware problem.

As a starting point you could boot into Safe Mode just to check if the issue is replicated. If so, then you'd want to run Apple Hardware Test.

Boot into Safe Mode

Follow these steps boot your Mac into Safe Mode:

Fully shut down your Mac
Restart your Mac
Immediately press the Shift key and keep it down
Let go of the Shift key when you see the login window (NOTE: If you have FileVault enabled you may need to log in twice).
Test the computer (i.e. use it, put it to sleep, try to replicate the crash)
To exit Safe Mode just restart your Mac as normal

If the problem persists in Safe Mode, then use Apple Hardware Test as follows.

Run Apple Hardware Test

Your model MBP uses Apple Hardware Test. To use this, follow these steps:

Shut down your MacBook Pro
Restart your MacBook Pro
Press and hold the D key before the gray startup screen appears.
After a while, Apple Hardware Test (AHT) will start.
When prompted, select your language and click the right arrow.
When the AHT console appears, you can choose to run Basic tests by clicking the Test button. However, I suggest you select the "Perform extended testing" checkbox before you click the Test button.
Your test results will appear in the window in the bottom-right of the console.

Note 1: that the extended test will take some time. Take a note of the results and report back.

Note 2: If pressing and holding the D key at Step 3 doesn't work, start again at Step 1 and, at Step 3 press and hold both the OptionD keys instead. This will try and run diagnostics from the internet instead, so you will need to allow more time for it to complete.

Best Answer

Related Solutions

MacOS – Kernel panic in old MacBook Pro after upgrading to El Capitan

Mac suddenly shuts down and doesn’t respond

Related Question