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Aloha,

My computer is crashing and I need help troubleshooting. The main problem I have is that most every time I try to shut the computer down it crashes (I get the kernel panic screen). After a restart the machine shuts down properly. I know the place to start is the crash logs, but those are mostly greek to me. Can someone help point me to the critical info in the reports?

I opened the Console to look at the crash reports and what I see may or may not be related to this issue. There are crash reports for the process "alertdeamon" and they happen every half-hour for several hours in a row. For example, right now the latest reports are timestamped,

9/11/2020 - 2:07 PM

9/11/2020 - 1:37 PM

9/11/2020 - 1:07 PM

9/11/2020 - 12:37 PM

9/11/2020 - 12:07 PM

9/11/2020 - 11:37 PM

9/11/2020 - 11:07 PM

9/11/2020 - 10:37 PM

 

Any help would be appreciated.

@hawaiithad
Look for .panic reports in
Finder -> Go -> Go to folder -> /Library/Logs/DiagnosticReports
Post the file (or several files; as differences and similarities all can be useful in diagnosing a kernel panic)

There are currently no .panic reports in that folder.

But here is the content of one that I copied and pasted back in May:

panic(cpu 2 caller 0xffffff7f8e87daae): watchdog timeout: no checkins from watchdogd in 306 seconds (14523 totalcheckins since monitoring last enabled), shutdown in progress
Backtrace (CPU 2), Frame : Return Address
0xffffff81efcb3c40 : 0xffffff800d71f5cd
0xffffff81efcb3c90 : 0xffffff800d858b05
0xffffff81efcb3cd0 : 0xffffff800d84a68e
0xffffff81efcb3d20 : 0xffffff800d6c5a40
0xffffff81efcb3d40 : 0xffffff800d71ec97
0xffffff81efcb3e40 : 0xffffff800d71f087
0xffffff81efcb3e90 : 0xffffff800dec2838
0xffffff81efcb3f00 : 0xffffff7f8e87daae
0xffffff81efcb3f10 : 0xffffff7f8e87d486
0xffffff81efcb3f50 : 0xffffff7f8e892d9c
0xffffff81efcb3fa0 : 0xffffff800d6c513e
Kernel Extensions in backtrace:
com.apple.driver.watchdog(1.0)[B435C72B-B311-3C67-8AA1-1D5CE0FAD429]@0xffffff7f8e87c000->0xffffff7f8e884fff
com.apple.driver.AppleSMC(3.1.9)[4589419D-7CCC-39A9-9E2F-F73FE42DD902]@0xffffff7f8e885000->0xffffff7f8e8a3fff
dependency: com.apple.iokit.IOACPIFamily(1.4)[0A7D7382-66FE-391B-9F93-97A996256C25]@0xffffff7f8e873000
dependency: com.apple.driver.watchdog(1)[B435C72B-B311-3C67-8AA1-1D5CE0FAD429]@0xffffff7f8e87c000
dependency: com.apple.iokit.IOPCIFamily(2.9)[BE052F4D-9B80-3FCD-B36D-BACB7DEE0DF2]@0xffffff7f8e131000

BSD process name corresponding to current thread: kernel_task

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: 0x000000000d400000
Kernel text base: 0xffffff800d600000
__HIB text base: 0xffffff800d500000
System model name: iMac17,1 (Mac-B809C3757DA9BB8D)
System shutdown begun: YES
Panic diags file available: YES (0x0)

System uptime in nanoseconds: 158698817331457
last loaded kext at 127425624071941: @filesystems.msdosfs 1.10 (addr 0xffffff7f923ae000, size 69632)
last unloaded kext at 158319474237226: >usb.cdc 5.0.0 (addr 0xffffff7f922f9000, size 28672)
loaded kexts:
@filesystems.afpfs 11.2
@nke.asp-tcp 8.1
@filesystems.smbfs 3.4.3
>!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
>!AUpstreamUserClient 3.6.8
@kext.AMDRadeonServiceManager 3.0.9
@kext.AMDFramebuffer 3.0.9
@kext.AMDRadeonX4000 3.0.9
>!AGraphicsDevicePolicy 5.2.4
@AGDCPluginDisplayMetrics 5.2.4
>!AHV 1
|IOUserEthernet 1.0.1
|IO!BSerialManager 7.0.5f6
>!A!ISKLGraphics 14.0.6
>eficheck 1
>!A!IPCHPMC 2.0.1
@kext.AMD9000!C 3.0.9
>pmtelemetry 1
>!A!ISKLGraphicsFramebuffer 14.0.6
@Dont_Steal_Mac_OS_X 7.0.0
>!AMCCSControl 1.14
|Broadcom!B20703USBTransport 7.0.5f6
>!A!ISlowAdaptiveClocking 4.0.0
>!ASMCLMU 212
>!AThunderboltIP 3.1.4
>!AVirtIO 1.0
@filesystems.hfs.kext 522.100.5
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
@BootCache 40
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
@filesystems.apfs 1412.120.2
|!ABCM5701Ethernet 10.3.5
>!ASDXC 1.7.7
>AirPort.BrcmNIC 1400.1.1
@private.KextAudit 1.0
>!AAHCIPort 341.0.2
>!AACPIButtons 6.1
>!AHPET 1.8
>!ARTC 2.0
>!ASMBIOS 2.1
>!AACPIEC 6.1
>!AAPIC 1.7
$!AImage4 1
@nke.applicationfirewall 303
$TMSafetyNet 8
@!ASystemPolicy 2.0.0
|EndpointSecurity 1
$SecureRemotePassword 1.0
>!AMultitouchDriver 3440.1
>!AInputDeviceSupport 3440.8
>!AHS!BDriver 3430.1
>IO!BHIDDriver 7.0.5f6
>!AHIDKeyboard 209
@kext.triggers 1.0
>DspFuncLib 283.15
@kext.OSvKernDSPLib 529
@kext.AMDRadeonX4070HWLibs 1.0
@kext.AMDRadeonX4000HWServices 3.0.9
>!AGraphicsControl 5.2.4
|IOAVB!F 850.1
>!ASSE 1.0
|IONDRVSupport 576.1
|IOAccelerator!F2 438.5.4
>!ASMBus!C 1.0.18d1
|Broadcom!BHost!CUSBTransport 7.0.5f6
|IO!BHost!CUSBTransport 7.0.5f6
|IO!BHost!CTransport 7.0.5f6
|IO!B!F 7.0.5f6
|IO!BPacketLogger 7.0.5f6
@!AGPUWrangler 5.2.4
|IOSlowAdaptiveClocking!F 1.0.0
@kext.AMDSupport 3.0.9
@!AGraphicsDeviceControl 5.2.4
>!AHDA!C 283.15
|IOGraphics!F 576.1
|IOHDA!F 283.15
>!AThunderboltEDMSink 4.2.3
>X86PlatformPlugin 1.0.0
>IOPlatformPlugin!F 6.0.0d8
>!ASMBusPCI 1.0.14d1
@plugin.IOgPTPPlugin 840.3
>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
|IOSurface 269.11
@filesystems.hfs.encodings.kext 1
>!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
|IOEthernetAVB!C 1.1.0
|IO80211!F 1200.12.2b1
>mDNSOffloadUserClient 1.0.1b8
>corecapture 1.0.4
|IOSkywalk!F 1
|IOUSB!F 900.4.2
|IOAHCI!F 290.0.1
>usb.!UXHCIPCI 1.2
>usb.!UXHCI 1.2
>!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
>!AKeyStore 2
>!UTDM 489.120.1
|IOSCSIBlockCommandsDevice 422.120.3
>!ACredentialManager 1.0
>KernelRelayHost 1
>!ASEPManager 1.0.1
>IOSlaveProcessor 1
|IOUSBMass!SDriver 157.121.1
|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.corecrypto 1.0
@kec.Libm 1

Here's another one:

panic(cpu 2 caller 0xffffff7f9707daae): watchdog timeout: no checkins from watchdogd in 309 seconds (165 totalcheckins since monitoring last enabled), shutdown in progress
Backtrace (CPU 2), Frame : Return Address
0xffffff81f85dbc40 : 0xffffff8015f1f5cd
0xffffff81f85dbc90 : 0xffffff8016058b05
0xffffff81f85dbcd0 : 0xffffff801604a68e
0xffffff81f85dbd20 : 0xffffff8015ec5a40
0xffffff81f85dbd40 : 0xffffff8015f1ec97
0xffffff81f85dbe40 : 0xffffff8015f1f087
0xffffff81f85dbe90 : 0xffffff80166c2838
0xffffff81f85dbf00 : 0xffffff7f9707daae
0xffffff81f85dbf10 : 0xffffff7f9707d486
0xffffff81f85dbf50 : 0xffffff7f97092d9c
0xffffff81f85dbfa0 : 0xffffff8015ec513e
Kernel Extensions in backtrace:
com.apple.driver.watchdog(1.0)[B435C72B-B311-3C67-8AA1-1D5CE0FAD429]@0xffffff7f9707c000->0xffffff7f97084fff
com.apple.driver.AppleSMC(3.1.9)[4589419D-7CCC-39A9-9E2F-F73FE42DD902]@0xffffff7f97085000->0xffffff7f970a3fff
dependency: com.apple.iokit.IOACPIFamily(1.4)[0A7D7382-66FE-391B-9F93-97A996256C25]@0xffffff7f97073000
dependency: com.apple.driver.watchdog(1)[B435C72B-B311-3C67-8AA1-1D5CE0FAD429]@0xffffff7f9707c000
dependency: com.apple.iokit.IOPCIFamily(2.9)[BE052F4D-9B80-3FCD-B36D-BACB7DEE0DF2]@0xffffff7f96931000

BSD process name corresponding to current thread: kernel_task

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: 0x0000000015c00000
Kernel text base: 0xffffff8015e00000
__HIB text base: 0xffffff8015d00000
System model name: iMac17,1 (Mac-B809C3757DA9BB8D)
System shutdown begun: YES
Panic diags file available: YES (0x0)

System uptime in nanoseconds: 48314784037679
last loaded kext at 14576401881036: @filesystems.msdosfs 1.10 (addr 0xffffff7f9ab04000, size 69632)
loaded kexts:
@filesystems.msdosfs 1.10
|SCSITaskUserClient 422.120.3
@filesystems.afpfs 11.2
@nke.asp-tcp 8.1
@filesystems.smbfs 3.4.3
>!ATopCaseHIDEventDriver 3430.1
>AudioAUUC 1.70
@fileutil 20.036.15
>AGPM 111.4.4
>!APlatformEnabler 2.7.0d0
>X86PlatformShim 1.0.0
>!AMikeyHIDDriver 131
@filesystems.autofs 3.0
>!AMikeyDriver 283.15
>!AUpstreamUserClient 3.6.8
>!AHDAHardwareConfigDriver 283.15
@kext.AMDRadeonServiceManager 3.0.9
@kext.AMDFramebuffer 3.0.9
>!AHDA 283.15
@kext.AMDRadeonX4000 3.0.9
>!AGraphicsDevicePolicy 5.2.4
>!A!ISKLGraphics 14.0.6
@AGDCPluginDisplayMetrics 5.2.4
>!AThunderboltIP 3.1.4
>!AHV 1
|IOUserEthernet 1.0.1
|IO!BSerialManager 7.0.5f6
>pmtelemetry 1
@Dont_Steal_Mac_OS_X 7.0.0
>ACPI_SMC_PlatformPlugin 1.0.0
>!A!IPCHPMC 2.0.1
>AGDCBacklightControl 5.2.4
>!ASMCLMU 212
>!ABacklight 180.3
>!AMCCSControl 1.14
>eficheck 1
|Broadcom!B20703USBTransport 7.0.5f6
@kext.AMD9000!C 3.0.9
>!A!ISKLGraphicsFramebuffer 14.0.6
>!A!ISlowAdaptiveClocking 4.0.0
>!AFIVRDriver 4.1.0
|IO!BUSBDFU 7.0.5f6
>!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
@filesystems.apfs 1412.120.2
|!ABCM5701Ethernet 10.3.5
>!ASDXC 1.7.7
>AirPort.BrcmNIC 1400.1.1
@private.KextAudit 1.0
>!AAHCIPort 341.0.2
>!AACPIButtons 6.1
>!ARTC 2.0
>!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.acm 5.0.0
>usb.serial 6.0.0
>usb.cdc.ecm 5.0.0
>usb.cdc.ncm 5.0.0
>!UMergeNub 900.4.2
$SecureRemotePassword 1.0
>!AMultitouchDriver 3440.1
>!AInputDeviceSupport 3440.8
>!AHS!BDriver 3430.1
>IO!BHIDDriver 7.0.5f6
>!AHIDKeyboard 209
@kext.triggers 1.0
>DspFuncLib 283.15
@kext.OSvKernDSPLib 529
@kext.AMDRadeonX4070HWLibs 1.0
@kext.AMDRadeonX4000HWServices 3.0.9
>!AGraphicsControl 5.2.4
|IOAVB!F 850.1
>!ASSE 1.0
>IOPlatformPluginLegacy 1.0.0
>X86PlatformPlugin 1.0.0
>IOPlatformPlugin!F 6.0.0d8
>!ABacklightExpert 1.1.0
|IONDRVSupport 576.1
>!ASMBus!C 1.0.18d1
|Broadcom!BHost!CUSBTransport 7.0.5f6
|IO!BHost!CUSBTransport 7.0.5f6
|IO!BHost!CTransport 7.0.5f6
|IO!B!F 7.0.5f6
|IO!BPacketLogger 7.0.5f6
>!AHDA!C 283.15
|IOHDA!F 283.15
@!AGPUWrangler 5.2.4
@kext.AMDSupport 3.0.9
@!AGraphicsDeviceControl 5.2.4
|IOAccelerator!F2 438.5.4
|IOGraphics!F 576.1
>!ASMBusPCI 1.0.14d1
|IOSlowAdaptiveClocking!F 1.0.0
>!AThunderboltEDMSink 4.2.3
@plugin.IOgPTPPlugin 840.3
>usb.!UHub 1.2
>usb.IOUSBHostHIDDevice 1.2
>!UAudio 323.1
>usb.cdc 5.0.0
>usb.networking 5.0.0
>usb.!UHostCompositeDevice 1.2
|IOAudio!F 300.2
@vecLib.kext 1.2.0
|IOSerial!F 11
|IOSurface 269.11
@filesystems.hfs.encodings.kext 1
>!AThunderboltDPOutAdapter 6.2.6
>!AThunderboltDPInAdapter 6.2.6
>!AThunderboltDPAdapter!F 6.2.6
>!AThunderboltPCIDownAdapter 2.5.4
>!AXsanScheme 3
|IOAHCIBlock!S 316.100.5
>!AThunderboltNHI 5.8.6
|IOThunderbolt!F 7.6.1
|IOEthernetAVB!C 1.1.0
|IO80211!F 1200.12.2b1
>mDNSOffloadUserClient 1.0.1b8
>corecapture 1.0.4
|IOSkywalk!F 1
>!A!ILpssI2C 3.0.60
>usb.!UHostPacketFilter 1.0
>!A!ILpssGspi 3.0.60
|IOUSB!F 900.4.2
|IOAHCI!F 290.0.1
>usb.!UXHCIPCI 1.2
>usb.!UXHCI 1.2
>!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
>!AKeyStore 2
>!UTDM 489.120.1
|IOSCSIBlockCommandsDevice 422.120.3
>!ACredentialManager 1.0
>KernelRelayHost 1
>!ASEPManager 1.0.1
>IOSlaveProcessor 1
|IOUSBMass!SDriver 157.121.1
|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.corecrypto 1.0
@kec.Libm 1

1 Answer
0

“Watchdog timeout“ is very common for Catalina. 

There is no single cure. 

Sometimes it is an external device.

Sometimes it is some software package. 

Sometimes it happens going or waking from sleep. 

If you search http://discussions.apple.com for “watchdog timeout” you will find many reports, and some of the configurations, and what was tried. If you can fine a setup similar to yours, you can see if what they did helps you. 

make sure you have the most recent macOS Catalina version installed. 

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