Big Sur Mac Crash 4 times in the last 6 hours - 2 no-report and 2 reports

I had same issue for the past 3 months. Both after and before upgrading to BigSur. I am still testing, but it would appear that in my case, OneDrive that failed to reconnect was the culprit. I removed it altogether (disconnect the account followed by removal in the applications), and so far, my mac seems to be holding up in situations where it would have already crashed. So looks like pruning those background apps which are on all the time might be a solution.

Hello, i have yesterday problem like this, can anybody help identify error?

panic(cpu 2 caller 0xffffff80225f9a25): userspace watchdog timeout: no successful checkins from com.apple.remoted since load

service returned not alive with context : unresponsive work processor(s): remoted heartbeat on bridge 

service: com.apple.logd, total successful checkins since load (180 seconds ago): 19, last successful checkin: 0 seconds ago

service: com.apple.remoted, no successful checkins since load (180 seconds ago)

Backtrace (CPU 2), Frame : Return Address

0xffffffa0cb87b670 : 0xffffff801f28e0dd 

0xffffffa0cb87b6c0 : 0xffffff801f3d4f33 

0xffffffa0cb87b700 : 0xffffff801f3c552a 

0xffffffa0cb87b750 : 0xffffff801f232a2f 

0xffffffa0cb87b770 : 0xffffff801f28d8fd 

0xffffffa0cb87b890 : 0xffffff801f28dbf3 

0xffffffa0cb87b900 : 0xffffff801fa9d884 

0xffffffa0cb87b970 : 0xffffff80225f9a25 

0xffffffa0cb87b980 : 0xffffff80225f9660 

0xffffffa0cb87b9a0 : 0xffffff801fa1e13e 

0xffffffa0cb87b9f0 : 0xffffff80225f8a34 

0xffffffa0cb87bb20 : 0xffffff801fa2837b 

0xffffffa0cb87bc80 : 0xffffff801f380961 

0xffffffa0cb87bd90 : 0xffffff801f29375d 

0xffffffa0cb87be00 : 0xffffff801f269cf5 

0xffffffa0cb87be60 : 0xffffff801f281312 

0xffffffa0cb87bef0 : 0xffffff801f3a982d 

0xffffffa0cb87bfa0 : 0xffffff801f233216 

      Kernel Extensions in backtrace:

         com.apple.driver.watchdog(1.0)[C29AFC04-7113-39AA-80DF-00F4DDAD0F46]@0xffffff80225f7000->0xffffff80225f9fff

Process name corresponding to current thread: watchdogd

Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev

Mac OS version:

20F71

Kernel version:

Darwin Kernel Version 20.5.0: Sat May  8 05:10:33 PDT 2021; root:xnu-7195.121.3~9/RELEASE_X86_64

Kernel UUID: 52A1E876-863E-38E3-AC80-09BBAB13B752

KernelCache slide: 0x000000001f000000

KernelCache base:  0xffffff801f200000

Kernel slide:      0x000000001f010000

Kernel text base:  0xffffff801f210000

__HIB  text base: 0xffffff801f100000

System model name: MacBookPro16,1 (Mac-E1008331FDC96864)

System shutdown begun: NO

Hibernation exit count: 0

System uptime in nanoseconds: 191473053870

Last Sleep:           absolute           base_tsc          base_nano

  Uptime  : 0x0000002c94aef4c6

  Sleep   : 0x0000000000000000 0x0000000000000000 0x0000000000000000

  Wake    : 0x0000000000000000 0x00000026a785011e 0x0000000000000000

last started kext at 1650910939: >usb.IOUSBHostHIDDevice 1.2 (addr 0xffffff80222d1000, size 40960)

loaded kexts:

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

!ABCMWLANBusInterfacePCIeMac 1

@filesystems.apfs 1677.120.9

@private.KextAudit 1.0

!ASmartBatteryManager 161.0.0

!AACPIButtons 6.1

!ASMBIOS 2.1

!AACPIEC 6.1

!AAPIC 1.7

@!ASystemPolicy 2.0.0

@nke.applicationfirewall 311

|IOKitRegistryCompatibility 1

|EndpointSecurity 1

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

!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 290.8.1

@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

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

!AThunderboltNHI 7.2.8

|IOThunderbolt!F 9.3.2

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 985.2

|IONetworking!F 3.4

DiskImages 493.0.0

|IO!B!F 8.0.5d7

|IOReport!F 47

|IO!BPacketLogger 8.0.5d7

$quarantine 4

$sandbox 300.0

@kext.!AMatch 1.0.0d1

|CoreAnalytics!F 1

!ASSE 1.0

!AKeyStore 2

!UTDM 511.120.2

|IOUSBMass!SDriver 184.121.1

|IOSCSIBlockCommandsDevice 436.121.1

|IO!S!F 2.1

|IOSCSIArchitectureModel!F 436.121.1

!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

I can tell you I solved this issue, but I can't tell you why it worked. I'll tell you anyway in case it helps; for me this was on a Late 2015 27" iMac with 3 TB fusion drive.

I experienced this issue for days or weeks at a time, often with less than 30 minutes between crashes. I ran hardware tests on my drive and RAM, I minimized my application usage, nothing seemed to reliably help. Eventually I noticed that after restarts my Finder windows in the status bar at the bottom were showing very low available HD space (e.g. 50 GB left on a 3 TB internal drive). I thought maybe swap space was an issue and would delete or move files to a Western Digital FireWire external HD when the computer rebooted. Disk space appears better now (80 GB available again), so yay! Then the iMac crashes again.

On rebooting, it now appears that there is just 50 GB or less space left. Huh. Delete, repeat, rinse. Hey, I am up to 100 GB free. Crash. Reboot. Huh, I only have 50 GB free again. I checked for crash dumps or other kinds of new big files and found nothing. And then it would crash again and I would find myself back around 50 GB disk space available. Like somehow the OS had lost track of what was free disk space and started writing swap into bad places? I have no idea. But through all this weirdness no actual data seemed to be lost.

Eventually I went through an arduous effort to find and move all the big files and directories that didn't need fusion drive-level performance until I cleared about 300+ GB of free space. Once I did that, the available disk space reports seemed to stabilize and I haven't had any crashes since then. (I also disconnected the WD FireWire 800 external HD and replaced it with a USB 3 Fantom Drive, but not sure if that's related.)

So I can't tell you why my chronic issue here stopped, but I can tell you what I did to stop it. Good luck with your issues!

Same issue.

panic(cpu 5 caller 0xffffff80037f9a25): userspace watchdog timeout: no successful checkins from com.apple.logd in 120 seconds
service returned not alive with context : unresponsive dispatch queue(s): com.apple.firehose.io-wl 
service: com.apple.logd, total successful checkins since wake (8280 seconds ago): 817, last successful checkin: 120 seconds ago
service: com.apple.WindowServer, total successful checkins since wake (8280 seconds ago): 826, last successful checkin: 30 seconds ago

Backtrace (CPU 5), Frame : Return Address
0xffffffc11e0e3670 : 0xffffff800048e0dd 
0xffffffc11e0e36c0 : 0xffffff80005d4f33 
0xffffffc11e0e3700 : 0xffffff80005c552a 
0xffffffc11e0e3750 : 0xffffff8000432a2f 
0xffffffc11e0e3770 : 0xffffff800048d8fd

I upgraded to Big Sur couple weeks ago. Watchdog-crashes begin.

In couple of days already 4 crashes. 6 months old problem and these still keep coming. What the heck Apple.

panic(cpu 2 caller 0xffffff80153d4e77): "com_apple_driver_AppleUSBCardReaderDriverNub::setPowerState(0xffffff935918e800 : 0xffffff801639e074, 1 -> 2) timed out after 30435 ms"@/System/Volumes/Data/SWE/macOS/BuildRoots/e90674e518/Library/Caches/com.apple.xbs/Sources/xnu/xnu-7195.121.3/iokit/Kernel/IOServicePM.cpp:5382 Backtrace (CPU 2), Frame : Return Address 0xffffffb0a483bac0 : 0xffffff8014c8e0dd 0xffffffb0a483bb10 : 0xffffff8014dd4f33 0xffffffb0a483bb50 : 0xffffff8014dc552a 0xffffffb0a483bba0 : 0xffffff8014c32a2f 0xffffffb0a483bbc0 : 0xffffff8014c8d8fd 0xffffffb0a483bce0 : 0xffffff8014c8dbf3 0xffffffb0a483bd50 : 0xffffff801549d81a 0xffffffb0a483bdc0 : 0xffffff80153d4e77 0xffffffb0a483be10 : 0xffffff80153d4799 0xffffffb0a483be20 : 0xffffff80153ed8de 0xffffffb0a483be60 : 0xffffff80153d3518 0xffffffb0a483be80 : 0xffffff8014cd46c5 0xffffffb0a483bef0 : 0xffffff8014cd5634 0xffffffb0a483bfa0 : 0xffffff8014c3213e

Process name corresponding to current thread: kernel_task

Mac OS version: 20F71

Kernel version: Darwin Kernel Version 20.5.0: Sat May 8 05:10:33 PDT 2021; root:xnu-7195.121.3~9/RELEASE_X86_64 Kernel UUID: 52A1E876-863E-38E3-AC80-09BBAB13B752 KernelCache slide: 0x0000000014a00000 KernelCache base: 0xffffff8014c00000 Kernel slide: 0x0000000014a10000 Kernel text base: 0xffffff8014c10000 __HIB text base: 0xffffff8014b00000 System model name: MacBookPro12,1 (Mac-E43C1C25D4880AD6) System shutdown begun: NO Panic diags file available: YES (0x0) Hibernation exit count: 1

System uptime in nanoseconds: 40282800599897 Last Sleep: absolute base_tsc base_nano Uptime : 0x000024a3120537cb Sleep : 0x0000249bdb7a470a 0x00002134bd98773e 0x0000086ef9bf9cd2 Wake : 0x0000249bfb2b4a08 0x000000015d2e460f 0x0000249beeafc9d5 last started kext at 32223669010416: >usb.cdc.acm 5.0.0 (addr 0xffffff7faf7a2000, size 8192) last stopped kext at 218306727933: >!AThunderboltEDMSink 5.0.3 (addr 0xffffff7faf74f000, size 32768) loaded kexts: com.intel.kext.intelhaxm 7.6.5

!UODD 511.120.2

@filesystems.exfat 1.4

!AUpstreamUserClient 3.6.8 AudioAUUC 1.70 AGPM 122.1 X86PlatformShim 1.0.0 !APlatformEnabler 2.7.0d0

@filesystems.autofs 3.0 @fileutil 20.036.15

!AGraphicsDevicePolicy 6.3.3

@AGDCPluginDisplayMetrics 6.3.3

pmtelemetry 1

|IOUserEthernet 1.0.1

usb.!UUserHCI 1 !AHDA 283.15

|IO!BSerialManager 8.0.5d7 @Dont_Steal_Mac_OS_X 7.0.0

!AHV 1 !ADiskImages2 1 !A!IBDWGraphics 16.0.4 !A!ISlowAdaptiveClocking 4.0.0 eficheck 1 !ABacklight 180.3 !ALPC 3.1 !ASMCLMU 212 !AMCCSControl 1.14

|Broadcom!B20703USBTransport 8.0.5d7

!A!IBDWGraphicsFramebuffer 16.0.4 !ACameraInterface 7.6.0 !AThunderboltIP 4.0.3

|SCSITaskUserClient 436.121.1

!UCardReader 511.120.2

|IO!BUSBDFU 8.0.5d7

!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

!ATopCaseHIDEventDriver 4050.1

@filesystems.apfs 1677.120.9

AirPort.BrcmNIC 1400.1.1

@private.KextAudit 1.0

!ASmartBatteryManager 161.0.0 !ARTC 2.0 !AACPIButtons 6.1 !AHPET 1.8 !ASMBIOS 2.1 !AACPIEC 6.1 !AAPIC 1.7

@!ASystemPolicy 2.0.0 @nke.applicationfirewall 311 |IOKitRegistryCompatibility 1 |EndpointSecurity 1

usb.cdc.acm 5.0.0 usb.serial 6.0.0 usb.cdc.ecm 5.0.0

|IOSCSIMultimediaCommandsDevice 436.121.1 |IOBD!S!F 1.8 |IODVD!S!F 1.8 |IOCD!S!F 1.8

!UAudio 405.39

@kext.triggers 1.0

!AGraphicsControl 6.3.3 DspFuncLib 283.15

@kext.OSvKernDSPLib 529 |IOSerial!F 11 |IOAVB!F 940.4 |IOEthernetAVB!C 1.1.0 @!AGPUWrangler 6.3.3 |IOSlowAdaptiveClocking!F 1.0.0 @plugin.IOgPTPPlugin 985.2

!ABacklightExpert 1.1.0 !AHDA!C 283.15

|IOHDA!F 283.15 |IOAudio!F 300.6.1 @vecLib.kext 1.2.0 |IONDRVSupport 585.1

X86PlatformPlugin 1.0.0 IOPlatformPlugin!F 6.0.0d8 !ASMBus!C 1.0.18d1

|Broadcom!BHost!CUSBTransport 8.0.5d7 |IO!BHost!CUSBTransport 8.0.5d7 |IO!BHost!CTransport 8.0.5d7 |IOAccelerator!F2 442.9 @!AGraphicsDeviceControl 6.3.3 |IOGraphics!F 585.1

!AThunderboltDPOutAdapter 8.1.4 usb.IOUSBHostHIDDevice 1.2 usb.cdc 5.0.0 usb.networking 5.0.0 usb.!UHostCompositeDevice 1.2 usb.!UHub 1.2 !AThunderboltDPInAdapter 8.1.4 !AThunderboltDPAdapter!F 8.1.4 !AThunderboltPCIDownAdapter 4.1.1 !ABSDKextStarter 3

|IOSurface 290.8.1 @filesystems.hfs.encodings.kext 1

!AActuatorDriver 4440.3 !AHIDKeyboard 224 !AMultitouchDriver 4440.3 !AInputDeviceSupport 4400.35 !AHS!BDriver 4050.1 IO!BHIDDriver 8.0.5d7 !AXsanScheme 3 !AHSSPIHIDDriver 61

|IONVMe!F 2.1.0

!AThunderboltNHI 7.2.8

|IOThunderbolt!F 9.3.2 |IO80211!F 1200.12.2b1 |IOSkywalk!F 1

mDNSOffloadUserClient 1.0.1b8 corecapture 1.0.4 usb.!UHostPacketFilter 1.0

|IOUSB!F 900.4.2

!AHSSPISupport 61 !A!ILpssSpi!C 3.0.60 !A!ILpssI2C 3.0.60 !A!ILpssDmac 3.0.60 !A!ILpssGspi 3.0.60 usb.!UXHCIPCI 1.2 usb.!UXHCI 1.2 !AEFINVRAM 2.1 !AEFIRuntime 2.1

|IOSMBus!F 1.1 |IOHID!F 2.0.0 $!AImage4 3.0.0 |IOTimeSync!F 985.2 |IONetworking!F 3.4

DiskImages 493.0.0

|IO!B!F 8.0.5d7 |IOReport!F 47 |IO!BPacketLogger 8.0.5d7 $quarantine 4 $sandbox 300.0 @kext.!AMatch 1.0.0d1 |CoreAnalytics!F 1

!ASSE 1.0 !AKeyStore 2 !UTDM 511.120.2

|IOUSBMass!SDriver 184.121.1 |IOSCSIBlockCommandsDevice 436.121.1 |IO!S!F 2.1 |IOSCSIArchitectureModel!F 436.121.1

!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

Same issue and crash report. Using 2019 MacBookPro 13" Big Sur 11.4, Mac OS version:20F71

I'd like to pile on :)

Since I have upgraded to 11.5 beta (20G5042c) my MacBook Air has become so unstable it’s impossible to compile anything on it. Clang will crash, and then the system will panic at the earliest opportunity.

I can’t even install MacOS 12 on it, the installer breaks at the very end.

I’m pretty sure something is broken with the memory allocator, judging by what forensics I get (malloc/free inconsistencies, as others have mentioned). I assume the VM swapping mechanism is buggy. That would explain why the panics only happen when the memory gets almost full and the swapping mechanism kicks in.

Anyways. I agree that as time passes on, MacOS gets pointlessly more complex, making it more prone to bugs. It’s high time Apple focussed on the kernel design rather than touting cosmetics features so few people care about.

It would appear this is going to be one of those issues that a) just silently goes away in a future update OR b)when we've all given up and bought M1s.

the some issue since 3 week, how we can solve it ?

Facing same issue past 4 weeks. I have tried erasing the disk, reinstalling multiple times but no success so far. If anyone can help.

Issue: panic(cpu 2 caller 0xffffff800f7f99b8): watchdog timeout: no checkins from watchdogd in 96 seconds (30 total checkins since monitoring last enabled) Backtrace (CPU 2), Frame : Return Address 0xffffffa06f03bc00 : 0xffffff800c48e0dd  0xffffffa06f03bc50 : 0xffffff800c5d4f33  0xffffffa06f03bc90 : 0xffffff800c5c552a  0xffffffa06f03bce0 : 0xffffff800c432a2f  0xffffffa06f03bd00 : 0xffffff800c48d8fd  0xffffffa06f03be20 : 0xffffff800c48dbf3  0xffffffa06f03be90 : 0xffffff800cc9d884  0xffffffa06f03bf00 : 0xffffff800f7f99b8  0xffffffa06f03bf20 : 0xffffff800f7f92e1  0xffffffa06f03bf50 : 0xffffff800db6565f  0xffffffa06f03bfa0 : 0xffffff800c43213e     Kernel Extensions in backtrace:      com.apple.driver.watchdog(1.0)[C29AFC04-7113-39AA-80DF-00F4DDAD0F46]@0xffffff800f7f7000->0xffffff800f7f9fff      com.apple.driver.AppleSMC(3.1.9)[1CE81438-E589-30EA-B40B-615AC3BDBED4]@0xffffff800db56000->0xffffff800db6efff       dependency: com.apple.driver.watchdog(1)[C29AFC04-7113-39AA-80DF-00F4DDAD0F46]@0xffffff800f7f7000->0xffffff800f7f9fff       dependency: com.apple.iokit.IOACPIFamily(1.4)[1B2FE91E-3EC7-3ED3-AF6B-E9C4BE29D5E3]@0xffffff800ea42000->0xffffff800ea43fff       dependency: com.apple.iokit.IOPCIFamily(2.9)[99A70889-A31C-3B25-8E88-ADD3F317E4E4]@0xffffff800ef6a000->0xffffff800ef92fff

Process name corresponding to current thread: kernel_task

Mac OS version: 20F71

Kernel version: Darwin Kernel Version 20.5.0: Sat May 8 05:10:33 PDT 2021; root:xnu-7195.121.3~9/RELEASE_X86_64 Kernel UUID: 52A1E876-863E-38E3-AC80-09BBAB13B752 KernelCache slide: 0x000000000c200000 KernelCache base: 0xffffff800c400000 Kernel slide:   0x000000000c210000 Kernel text base: 0xffffff800c410000 __HIB text base: 0xffffff800c300000 System model name: MacBookPro11,4 (Mac-06F11FD93F0323C5) Root disk errors: "Could not recover SATA HDD after 5 attempts. Terminating." System shutdown begun: NO Panic diags file available: YES (0x0) Hibernation exit count: 0

System uptime in nanoseconds: 390916581913 Last Sleep:      absolute      base_tsc     base_nano  Uptime : 0x0000005b0471c690  Sleep  : 0x0000000000000000 0x0000000000000000 0x0000000000000000  Wake  : 0x0000000000000000 0x00000002a6f1b806 0x0000000000000000 last started kext at 2474064787: >!AActuatorDriver 4440.3 (addr 0xffffff800d5d1000, size 28672) loaded kexts:

!ATopCaseHIDEventDriver 4050.1 !UTopCaseDriver 4050.1

|IO!BUSBDFU 8.0.5d7 |SCSITaskUserClient 436.121.1

!UCardReader 511.120.2

@filesystems.apfs 1677.120.9

AirPort.BrcmNIC 1400.1.1 !AAHCIPort 346.100.2 !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 @private.KextAudit 1.0

!ASmartBatteryManager 161.0.0 !AACPIButtons 6.1 !ARTC 2.0 !AHPET 1.8 !ASMBIOS 2.1 !AACPIEC 6.1 !AAPIC 1.7

@!ASystemPolicy 2.0.0 @nke.applicationfirewall 311 |IOKitRegistryCompatibility 1 |EndpointSecurity 1

!AActuatorDriver 4440.3 !AHS!BDriver 4050.1 IO!BHIDDriver 8.0.5d7 !AMultitouchDriver 4440.3 !AInputDeviceSupport 4400.35 !AHIDKeyboard 224 usb.IOUSBHostHIDDevice 1.2 usb.cdc 5.0.0 usb.networking 5.0.0 usb.!UHostCompositeDevice 1.2 !AThunderboltDPInAdapter 8.1.4 !AThunderboltDPAdapter!F 8.1.4 !AThunderboltPCIDownAdapter 4.1.1 !AXsanScheme 3

|IOAHCIBlock!S 332

!AThunderboltNHI 7.2.8

|IOThunderbolt!F 9.3.2 |IO80211!F 1200.12.2b1

corecapture 1.0.4 !A!ILpssGspi 3.0.60

|IOAHCI!F 294.100.1

usb.!UXHCIPCI 1.2 usb.!UXHCI 1.2 !ABSDKextStarter 3

|IOSurface 290.8.1 |IOSkywalk!F 1

mDNSOffloadUserClient 1.0.1b8

@filesystems.hfs.encodings.kext 1

usb.!UHostPacketFilter 1.0

|IOUSB!F 900.4.2

!AEFINVRAM 2.1 !AEFIRuntime 2.1

|IOSMBus!F 1.1 |IOHID!F 2.0.0 $!AImage4 3.0.0 |IOTimeSync!F 985.2 |IONetworking!F 3.4

DiskImages 493.0.0

|IO!B!F 8.0.5d7 |IOReport!F 47 |IO!BPacketLogger 8.0.5d7 $quarantine 4 $sandbox 300.0 @kext.!AMatch 1.0.0d1 |CoreAnalytics!F 1

!ASSE 1.0 !AKeyStore 2 !UTDM 511.120.2

|IOUSBMass!SDriver 184.121.1 |IOSCSIBlockCommandsDevice 436.121.1 |IO!S!F 2.1 |IOSCSIArchitectureModel!F 436.121.1

!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

Same issue for me on my iMac (Retina 5K, 27-inch, 2020). Turns off unexpectedly, but only when I'm using an external monitor.

I took it in to the Apple Store and they wiped the drive and reinstalled the OS said everything should be fine. The issue restarted same day I brought it home. This is very frustrating.

I also have same issue. crashes all the time I use on battery and put it into sleep.

MBP early 2015 13 inch, MacOS Big Sur 11.4 How to solve it? Any idea?

panic(cpu 2 caller 0xffffff80203d4e77): "com_apple_driver_AppleUSBCardReaderDriverNub::setPowerState(0xffffff936420e800 : 0xffffff802139e074, 1 -> 2) timed out after 30446 ms"@/System/Volumes/Data/SWE/macOS/BuildRoots/e90674e518/Library/Caches/com.apple.xbs/Sources/xnu/xnu-7195.121.3/iokit/Kernel/IOServicePM.cpp:5382 Backtrace (CPU 2), Frame : Return Address 0xffffffa09aeb3ac0 : 0xffffff801fc8e0dd 0xffffffa09aeb3b10 : 0xffffff801fdd4f33 0xffffffa09aeb3b50 : 0xffffff801fdc552a 0xffffffa09aeb3ba0 : 0xffffff801fc32a2f 0xffffffa09aeb3bc0 : 0xffffff801fc8d8fd 0xffffffa09aeb3ce0 : 0xffffff801fc8dbf3 0xffffffa09aeb3d50 : 0xffffff802049d81a 0xffffffa09aeb3dc0 : 0xffffff80203d4e77 0xffffffa09aeb3e10 : 0xffffff80203d4799 0xffffffa09aeb3e20 : 0xffffff80203ed8de 0xffffffa09aeb3e60 : 0xffffff80203d3518 0xffffffa09aeb3e80 : 0xffffff801fcd46c5 0xffffffa09aeb3ef0 : 0xffffff801fcd5634 0xffffffa09aeb3fa0 : 0xffffff801fc3213e

Process name corresponding to current thread: kernel_task

Mac OS version: 20F71

Kernel version: Darwin Kernel Version 20.5.0: Sat May 8 05:10:33 PDT 2021; root:xnu-7195.121.3~9/RELEASE_X86_64 Kernel UUID: 52A1E876-863E-38E3-AC80-09BBAB13B752 KernelCache slide: 0x000000001fa00000 KernelCache base: 0xffffff801fc00000 Kernel slide: 0x000000001fa10000 Kernel text base: 0xffffff801fc10000 __HIB text base: 0xffffff801fb00000 System model name: MacBookPro12,1 (Mac-E43C1C25D4880AD6) System shutdown begun: NO Panic diags file available: YES (0x0) Hibernation exit count: 1

System uptime in nanoseconds: 95544863509 Last Sleep: absolute base_tsc base_nano Uptime : 0x000000163eeaef52 Sleep : 0x0000000eff19e366 0x000009080684b4ec 0x0000000e008c10ad Wake : 0x0000000f2789d986 0x00000000cf0cb001 0x0000000f118d0e3f last started kext at 23300713625: >!AUpstreamUserClient 3.6.8 (addr 0xffffff7fba815000, size 12288) loaded kexts:

!AUpstreamUserClient 3.6.8 AudioAUUC 1.70 AGPM 122.1 !APlatformEnabler 2.7.0d0 X86PlatformShim 1.0.0

@filesystems.autofs 3.0 @fileutil 20.036.15

!AGraphicsDevicePolicy 6.3.3

@AGDCPluginDisplayMetrics 6.3.3

pmtelemetry 1

|IOUserEthernet 1.0.1

usb.!UUserHCI 1

|IO!BSerialManager 8.0.5d7 @Dont_Steal_Mac_OS_X 7.0.0

!AHDAHardwareConfigDriver 283.15 !AHV 1 !ADiskImages2 1 !AHDA 283.15 ACPI_SMC_PlatformPlugin 1.0.0 !ACameraInterface 7.6.0 eficheck 1 AGDCBacklightControl 6.3.3

|Broadcom!B20703USBTransport 8.0.5d7

!A!IBDWGraphics 16.0.4 !AThunderboltIP 4.0.3 !A!IBDWGraphicsFramebuffer 16.0.4 !ABacklight 180.3 !ASMCLMU 212 !AMCCSControl 1.14 !ALPC 3.1 !A!ISlowAdaptiveClocking 4.0.0 !AFIVRDriver 4.1.0

|IO!BUSBDFU 8.0.5d7 |SCSITaskUserClient 436.121.1

!UCardReader 511.120.2 !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 @filesystems.apfs 1677.120.9

!AAHCIPort 346.100.2 !ATopCaseHIDEventDriver 4050.1 AirPort.BrcmNIC 1400.1.1

@private.KextAudit 1.0

!ASmartBatteryManager 161.0.0 !ARTC 2.0 !AACPIButtons 6.1 !AHPET 1.8 !ASMBIOS 2.1 !AACPIEC 6.1 !AAPIC 1.7

@!ASystemPolicy 2.0.0 @nke.applicationfirewall 311 |IOKitRegistryCompatibility 1 |EndpointSecurity 1 @kext.triggers 1.0

!AGraphicsControl 6.3.3

|IOSerial!F 11

!UAudio 405.39

|IOAVB!F 940.4 |IOEthernetAVB!C 1.1.0

DspFuncLib 283.15

@kext.OSvKernDSPLib 529 @!AGPUWrangler 6.3.3

IOPlatformPluginLegacy 1.0.0 X86PlatformPlugin 1.0.0

|Broadcom!BHost!CUSBTransport 8.0.5d7 |IO!BHost!CUSBTransport 8.0.5d7 |IO!BHost!CTransport 8.0.5d7 |IOAccelerator!F2 442.9 @!AGraphicsDeviceControl 6.3.3

!AThunderboltEDMSink 5.0.3 !AThunderboltDPOutAdapter 8.1.4 !ABacklightExpert 1.1.0

|IONDRVSupport 585.1

!AHDA!C 283.15

|IOHDA!F 283.15 |IOAudio!F 300.6.1 @vecLib.kext 1.2.0 @plugin.IOgPTPPlugin 985.2

!ASMBusPCI 1.0.14d1

|IOGraphics!F 585.1

!ASMBus!C 1.0.18d1 IOPlatformPlugin!F 6.0.0d8

|IOSlowAdaptiveClocking!F 1.0.0

usb.IOUSBHostHIDDevice 1.2 usb.cdc 5.0.0 usb.networking 5.0.0 usb.!UHostCompositeDevice 1.2 !AThunderboltDPInAdapter 8.1.4 !AThunderboltDPAdapter!F 8.1.4 !AThunderboltPCIDownAdapter 4.1.1 !ABSDKextStarter 3

|IOSurface 290.8.1 @filesystems.hfs.encodings.kext 1

!AXsanScheme 3

|IOAHCIBlock!S 332

!AActuatorDriver 4440.3

|IOAHCI!F 294.100.1

!AHIDKeyboard 224 !AMultitouchDriver 4440.3 !AInputDeviceSupport 4400.35 !AHS!BDriver 4050.1 IO!BHIDDriver 8.0.5d7 !AHSSPIHIDDriver 61 !AThunderboltNHI 7.2.8

|IOThunderbolt!F 9.3.2 |IO80211!F 1200.12.2b1 |IOSkywalk!F 1

mDNSOffloadUserClient 1.0.1b8 corecapture 1.0.4 usb.!UHostPacketFilter 1.0

|IOUSB!F 900.4.2

!AHSSPISupport 61 !A!ILpssSpi!C 3.0.60 !A!ILpssI2C 3.0.60 !A!ILpssGspi 3.0.60 !A!ILpssDmac 3.0.60 usb.!UXHCIPCI 1.2 usb.!UXHCI 1.2 !AEFINVRAM 2.1 !AEFIRuntime 2.1

|IOSMBus!F 1.1 |IOHID!F 2.0.0 $!AImage4 3.0.0 |IOTimeSync!F 985.2 |IONetworking!F 3.4

DiskImages 493.0.0

|IO!B!F 8.0.5d7 |IOReport!F 47 |IO!BPacketLogger 8.0.5d7 $quarantine 4 $sandbox 300.0 @kext.!AMatch 1.0.0d1 |CoreAnalytics!F 1

!ASSE 1.0 !AKeyStore 2 !UTDM 511.120.2

|IOUSBMass!SDriver 184.121.1 |IOSCSIBlockCommandsDevice 436.121.1 |IO!S!F 2.1 |IOSCSIArchitectureModel!F 436.121.1

!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

this was not fixed still after 7-8 months?

I bought a brand new iMac 27" 2020 i7 back in May and right out of the box it started to crash, I spent about 3 weeks chatting on a daily basis with apple support. I even tried reverting back to previous OS Catalina, was still crashing. Eventually they told me to pack the computer and they'd send me a new one, which I did.. took about 3 weeks before the new one crashed again. Twice since last week but still a pain, it's making work pretty stressful!

I was having daily crashes on my MBP 16 2019 with no external devices connected. My IT suggested I do a NVRAM and SMC reset and then no more kernel panic for many days now. The panic I was getting was a watchdog triggered panic in kernel_task. I would never believe when they tell you to do the NVRAM and SMC reset but in this case it worked! Note that NVRAM and SMC reset are 2 different procedures to follow. Make sure to do them correctly based on the type of device that you have (if you have Touch ID and T2 security chip, etc)

Same issue here, just made a clean install not sure what it could be but seems to me that every time it happens time machine is running. I just did a fresh install iMac 27 2020 what I suspect could be: 2 extra Crucial RAM 16Gb each or some App: Little Snitch, Paste, Tyme 2 or 2 external SSD case panic(cpu 4 caller 0xffffff800d1f9a25): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds service: com.apple.logd, total successful checkins since load (2750 seconds ago): 276, last successful checkin: 0 seconds ago service: com.apple.WindowServer, total successful checkins since load (2720 seconds ago): 260, last successful checkin: 120 seconds ago service: com.apple.remoted, total successful checkins since load (2750 seconds ago): 274, last successful checkin: 0 seconds ago

Same issue here on 11.4 "stable", just made a clean install not sure what it could be but seems to me that every time it happens time machine is running. I just did a fresh install iMac 27 2020 what I suspect could be: 2 extra Crucial RAM 16Gb each or some App: Little Snitch, Paste, Tyme 2 or 2 external SSD case

panic(cpu 4 caller 0xffffff800d1f9a25): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds service: com.apple.logd, total successful checkins since load (2750 seconds ago): 276, last successful checkin: 0 seconds ago service: com.apple.WindowServer, total successful checkins since load (2720 seconds ago): 260, last successful checkin: 120 seconds ago service: com.apple.remoted, total successful checkins since load (2750 seconds ago): 274, last successful checkin: 0 seconds ago

Same here. Here's what I got:

panic(cpu 2 caller 0xffffff8009bfea25): userspace watchdog timeout: no successful checkins from com.apple.remoted in 180 seconds
service returned not alive with context : unresponsive work processor(s): remoted heartbeat on bridge 
service: com.apple.logd, total successful checkins since wake (180 seconds ago): 19, last successful checkin: 0 seconds ago
service: com.apple.WindowServer, total successful checkins since wake (180 seconds ago): 19, last successful checkin: 0 seconds ago
service: com.apple.remoted, total successful checkins since wake (180 seconds ago): 1, last successful checkin: 180 seconds ago

I am also having the same Problem after updating to Big Sur. I was advised by Apple support to reformat my device. After reading the details here not sure whether that would solve my problem or not. Hopefully Apple solves this soon. Frustrated.

PROBLEM.... SORT OF FIXED/REDUCED, Been having this problem just like everyone, noticed that it only crashed when things were idle, and once when it looked like it was going to crash I started to move the mouse and it came bace from the edge. I got the idea to try a "Mouse jiggle USB port mouse mover" which I turn on anytime I am away from my screen (The Jiggler I have has a built in power switch) and for the last 2 months it has not kernel panicked once when the Jiggler was on. This proves that it is a problem when things are Idle and Apple needs to fix this.

Confirming that this still crashes on Big Sur 11.5.2 (20G95) with the following log:

Crash Log

panic(cpu 2 caller 0xffffff80085fea25): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds
service: com.apple.logd, total successful checkins since load (20740 seconds ago): 2075, last successful checkin: 0 seconds ago
service: com.apple.WindowServer, total successful checkins since load (20710 seconds ago): 2059, last successful checkin: 120 seconds ago
service: com.apple.remoted, total successful checkins since load (20740 seconds ago): 2073, last successful checkin: 0 seconds ago

Backtrace (CPU 2), Frame : Return Address
0xffffffc10d8bb670 : 0xffffff800528e04d 
0xffffffc10d8bb6c0 : 0xffffff80053d4e13 
0xffffffc10d8bb700 : 0xffffff80053c540a 
0xffffffc10d8bb750 : 0xffffff8005232a2f 
0xffffffc10d8bb770 : 0xffffff800528d86d 
0xffffffc10d8bb890 : 0xffffff800528db63 
0xffffffc10d8bb900 : 0xffffff8005a9dc74 
0xffffffc10d8bb970 : 0xffffff80085fea25 
0xffffffc10d8bb980 : 0xffffff80085fe660 
0xffffffc10d8bb9a0 : 0xffffff8005a1e4be 
0xffffffc10d8bb9f0 : 0xffffff80085fda34 
0xffffffc10d8bbb20 : 0xffffff8005a2876b 
0xffffffc10d8bbc80 : 0xffffff8005380841 
0xffffffc10d8bbd90 : 0xffffff80052936cd 
0xffffffc10d8bbe00 : 0xffffff8005269cf5 
0xffffffc10d8bbe60 : 0xffffff8005281252 
0xffffffc10d8bbef0 : 0xffffff80053a970d 
0xffffffc10d8bbfa0 : 0xffffff8005233216 
      Kernel Extensions in backtrace:
         com.apple.driver.watchdog(1.0)[5E977058-687E-36A0-9AED-3BDE47B80C97]@0xffffff80085fc000->0xffffff80085fefff

It's really hard to continue doing work when this keeps happening. @appledevs a little help here would be great

My MacBook Pro 13" M1 (Big Sur 11.5.2 (20G95)) crashed several times already.

One of the crash reports with error:

IOSurface creation failed with size [844 x 128]. If size looks sane, this is likely due to an IOSurface leak and system IOSurface limit reached.

https://pastebin.com/wMGBvUJP

I'm afraid I have no answer, but also experiencing the same thing.

I have a MacPro 6,1 (I know, pretty old...) and it crashes with the panic multiple times a day (only 1 today so far!)

"panic(cpu 2 caller 0xffffff80149f9a25): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds"

I wanted to mention some basic things I've tried:

• Disconnecting external HDD
• Disconnecting my LG ultra-wide monitor
• Disconnecting my (oooold) DELL monitor
• Changing fan speeds using TGPro (felt like it was doing something useful, but I wasn't convinced it made a difference)
• Just using 1 app at a time (e.g. Chrome, Outlook)

I can spend hours editing photos on Lightroom or doing sound Editing on Cubase and it can be fine. It feels random. As much as I want to blame the Microsoft Products I've got, it seems to crash when I'm dragging something, or switching desktop a lot, especially if I'm doing lots of things at once. It feels like it can't keep up, even thought the machine is very nippy generally. The screen will freeze but the mouse will continue to work for 30 seconds, then everything freezes for the remaining 90 seconds until it resets itself.

Feels like GPU issue, but I'm no expert. So much for 2 graphics cards being useful huh?

I'm waiting for the new macs to come out, but scared that this is an OS problem and it will continue! I didn't have this problem on my 5,1 Mac and seriously considering going back to it.

Good luck to all of you (us) in getting over this ridiculous unreliability of what was a much loved brand for me.

Same here more or less daily in the morning. iMac Modellname: iMac

  Modell-Identifizierung: iMac15,1

  Prozessortyp: Quad-Core Intel Core i5

  Prozessorgeschwindigkeit: 3.5 GHz

  Anzahl der Prozessoren: 1

  Gesamtanzahl der Kerne: 4

  L2-Cache (pro Kern): 256 KB

  L3-Cache: 6 MB

  Speicher: 32 GB

  Systemfirmwareversion: 431.140.6.0.0

  SMC-Version (System): 2.22f16

panic(cpu 1 caller 0xffffff80227fea25): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds service: com.apple.logd, total successful checkins since wake (1430 seconds ago): 144, last successful checkin: 0 seconds ago service: com.apple.WindowServer, total successful checkins since wake (1430 seconds ago): 132, last successful checkin: 120 seconds ago

Backtrace (CPU 1), Frame : Return Address 0xffffffa0bce43670 : 0xffffff801f48cfdd 0xffffffa0bce436c0 : 0xffffff801f5d3fd3 0xffffffa0bce43700 : 0xffffff801f5c45ca 0xffffffa0bce43750 : 0xffffff801f431a2f 0xffffffa0bce43770 : 0xffffff801f48c7fd 0xffffffa0bce43890 : 0xffffff801f48caf3 0xffffffa0bce43900 : 0xffffff801fc9ce34 0xffffffa0bce43970 : 0xffffff80227fea25 0xffffffa0bce43980 : 0xffffff80227fe660 0xffffffa0bce439a0 : 0xffffff801fc1d67e 0xffffffa0bce439f0 : 0xffffff80227fda34 0xffffffa0bce43b20 : 0xffffff801fc2792b 0xffffffa0bce43c80 : 0xffffff801f57f7d1 0xffffffa0bce43d90 : 0xffffff801f49265d 0xffffffa0bce43e00 : 0xffffff801f468cd5 0xffffffa0bce43e60 : 0xffffff801f4801e2 0xffffffa0bce43ef0 : 0xffffff801f5a869d 0xffffffa0bce43fa0 : 0xffffff801f432216 Kernel Extensions in backtrace: com.apple.driver.watchdog(1.0)[4CFADD2A-613E-320D-AD14-9C9379E87CB7]@0xffffff80227fc000->0xffffff80227fefff

Process name corresponding to current thread: watchdogd

Mac OS version: 20G165

Kernel version: Darwin Kernel Version 20.6.0: Mon Aug 30 06:12:21 PDT 2021; root:xnu-7195.141.6~3/RELEASE_X86_64 Kernel UUID: C2591F4E-EE82-33CC-8C59-DB81D9AD80DD KernelCache slide: 0x000000001f200000 KernelCache base: 0xffffff801f400000 Kernel slide: 0x000000001f210000 Kernel text base: 0xffffff801f410000 __HIB text base: 0xffffff801f300000 System model name: iMac15,1 (Mac-42FD25EABCABB274) System shutdown begun: NO Panic diags file available: NO (0xe00002bc) Hibernation exit count: 0

System uptime in nanoseconds: 54871209471415 Last Sleep: absolute base_tsc base_nano Uptime : 0x000031e7b2f2f0c4 Sleep : 0x0000309891fa771f 0x00000000435d4b0d 0x00002e03047989b5 Wake : 0x000030989950595c 0x00000000433523b2 0x0000309898b759e9 last started kext at 50615930221912: @filesystems.smbfs 3.6.1 (addr 0xffffff7fbad40000, size 491520) last stopped kext at 271735750053: >!AFIVRDriver 4.1.0 (addr 0xffffff7fb8a51000, size 8192) loaded kexts: org.virtualbox.kext.VBoxNetAdp 6.1.18 org.virtualbox.kext.VBoxNetFlt 6.1.18 org.virtualbox.kext.VBoxUSB 6.1.18 org.virtualbox.kext.VBoxDrv 6.1.18 com.paragon-software.filesystems.ntfs 108.8.15 com.disc-soft.DAEMONTools.VirtualSCSIBus 1.0.2 @filesystems.smbfs 3.6.1 @fileutil 20.036.15 @filesystems.autofs 3.0

!ATopCaseHIDEventDriver 4050.1 !A!BMultitouch 99 AudioAUUC 1.70 AGPM 122.1 !APlatformEnabler 2.7.0d0 X86PlatformShim 1.0.0 !AMikeyHIDDriver 131 !AUpstreamUserClient 3.6.8

@kext.AMDFramebuffer 4.0.6

!AMikeyDriver 283.15

@kext.AMDRadeonX4000 4.0.6 @kext.AMDRadeonServiceManager 4.0.6

!AGraphicsDevicePolicy 6.3.5

@AGDCPluginDisplayMetrics 6.3.5

pmtelemetry 1

|IOUserEthernet 1.0.1

!AHDA 283.15 usb.!UUserHCI 1

|IO!BSerialManager 8.0.5d7 @Dont_Steal_Mac_OS_X 7.0.0

!AHV 1 !ADiskImages2 1 !A!IHD5000Graphics 16.0.5 !AThunderboltIP 4.0.3 !AMCCSControl 1.14 !A!IFramebufferAzul 16.0.5 eficheck 1 !ALPC 3.1 !ASMCLMU 212

@kext.AMD7000!C 4.0.6

!A!ISlowAdaptiveClocking 4.0.0

|IO!BUSBDFU 8.0.5d7 |SCSITaskUserClient 436.140.1

!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 @filesystems.apfs 1677.141.2

AirPort.BrcmNIC 1400.1.1 !ASDXC 1.9.0

@private.KextAudit 1.0 |!ABCM5701Ethernet 11.0.0

!AAHCIPort 346.100.2 !ARTC 2.0 !AACPIButtons 6.1 !AHPET 1.8 !ASMBIOS 2.1 !AACPIEC 6.1 !AAPIC 1.7

@!ASystemPolicy 2.0.0 @nke.applicationfirewall 311 |IOKitRegistryCompatibility 1 |EndpointSecurity 1 |IOUSBUserClient 900.4.2 @plugin.IOAVBDiscoveryPlugin 940.4 @kext.triggers 1.0

!AHIDKeyboard 224 !AHS!BDriver 4050.1 IO!BHIDDriver 8.0.5d7 !AMultitouchDriver 4440.3 !AInputDeviceSupport 4400.35

@kext.AMDRadeonX4030HWLibs 1.0 @kext.AMDRadeonX4000HWServices 4.0.6

!AGraphicsControl 6.3.5 DspFuncLib 283.15

@kext.OSvKernDSPLib 529 |IOSerial!F 11 |IOAVB!F 940.4 |IOEthernetAVB!C 1.1.0

usb.IOUSBHostHIDDevice 1.2 !AThunderboltEDMSink 5.0.3 !ASMBus!C 1.0.18d1

|IOAccelerator!F2 442.9 |IONDRVSupport 585.1

X86PlatformPlugin 1.0.0 !AHDA!C 283.15

|IOHDA!F 283.15

!ASMBusPCI 1.0.14d1 IOPlatformPlugin!F 6.0.0d8 !UAudio 405.39

|IOAudio!F 300.6.1 @vecLib.kext 1.2.0 @kext.AMDSupport 4.0.6 @!AGPUWrangler 6.3.5 @!AGraphicsDeviceControl 6.3.5 |IOGraphics!F 585.1 |IOSlowAdaptiveClocking!F 1.0.0 @plugin.IOgPTPPlugin 985.2 |Broadcom!BHost!CUSBTransport 8.0.5d7 |IO!BHost!CUSBTransport 8.0.5d7 |IO!BHost!CTransport 8.0.5d7

usb.cdc 5.0.0 usb.networking 5.0.0 usb.!UHostCompositeDevice 1.2 usb.!UHub 1.2 !AThunderboltDPOutAdapter 8.1.4 !AThunderboltDPInAdapter 8.1.4 !AThunderboltDPAdapter!F 8.1.4 !AThunderboltPCIDownAdapter 4.1.1 !ABSDKextStarter 3

|IOSurface 290.8.1 @filesystems.hfs.encodings.kext 1

!AXsanScheme 3

|IOAHCIBlock!S 332

!AThunderboltNHI 7.2.8

|IOThunderbolt!F 9.3.2

usb.!UHostPacketFilter 1.0

|IOUSB!F 900.4.2 |IO80211!F 1200.12.2b1 |IOSkywalk!F 1

corecapture 1.0.4 mDNSOffloadUserClient 1.0.1b8 usb.!UXHCIPCI 1.2 usb.!UXHCI 1.2

|IOAHCI!F 294.100.1

!A!ILpssGspi 3.0.60 !AEFINVRAM 2.1 !AEFIRuntime 2.1

|IOSMBus!F 1.1 |IOHID!F 2.0.0 $!AImage4 3.0.0 |IOTimeSync!F 985.2 |IONetworking!F 3.4

DiskImages 493.0.0

|IO!B!F 8.0.5d7 |IOReport!F 47 |IO!BPacketLogger 8.0.5d7 $quarantine 4 $sandbox 300.0 @kext.!AMatch 1.0.0d1 |CoreAnalytics!F 1

!ASSE 1.0 !AKeyStore 2 !UTDM 511.141.1

|IOUSBMass!SDriver 184.140.2 |IOSCSIBlockCommandsDevice 436.140.1 |IO!S!F 2.1 |IOSCSIArchitectureModel!F 436.140.1

!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

I get crashes like this every morning since I updated to Big Sur, any time that I’m not at my machine and actively using it for a few hours (or less). Happens regardless of whether I have no apps open at all, lots of apps open, active tasks running / processing data, or even while actively listening to music on my ps4 from mac’s media server.

Note that I upgraded my system from High Sierra to Big Sur a few weeks ago, and had anticipated issues... but OS back to back crashing & rebooting all by itself whenever left unattended is quite the headache. A reboot may re-open all your apps and windows, but CPU intensive tasks/jobs are aborted and have to be restarted all over again -- days of progress lost at times;

I migrated to Apple from PC's over 25 years ago because I needed a stable system...

Crash report after reboot:

panic(cpu 2 caller 0xffffff800ddfea25): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds
service: com.apple.logd, total successful checkins since load (51320 seconds ago): 5133, last successful checkin: 0 seconds ago
service: com.apple.WindowServer, total successful checkins since load (51290 seconds ago): 5117, last successful checkin: 120 seconds ago

Backtrace (CPU 2), Frame : Return Address
0xffffffa1b0bcb670 : 0xffffff800aa8cfdd 
0xffffffa1b0bcb6c0 : 0xffffff800abd3fd3 
0xffffffa1b0bcb700 : 0xffffff800abc45ca 
0xffffffa1b0bcb750 : 0xffffff800aa31a2f 
0xffffffa1b0bcb770 : 0xffffff800aa8c7fd 
0xffffffa1b0bcb890 : 0xffffff800aa8caf3 
0xffffffa1b0bcb900 : 0xffffff800b29ce34 
0xffffffa1b0bcb970 : 0xffffff800ddfea25 
0xffffffa1b0bcb980 : 0xffffff800ddfe660 
0xffffffa1b0bcb9a0 : 0xffffff800b21d67e 
0xffffffa1b0bcb9f0 : 0xffffff800ddfda34 
0xffffffa1b0bcbb20 : 0xffffff800b22792b 
0xffffffa1b0bcbc80 : 0xffffff800ab7f7d1 
0xffffffa1b0bcbd90 : 0xffffff800aa9265d 
0xffffffa1b0bcbe00 : 0xffffff800aa68cd5 
0xffffffa1b0bcbe60 : 0xffffff800aa801e2 
0xffffffa1b0bcbef0 : 0xffffff800aba869d 
0xffffffa1b0bcbfa0 : 0xffffff800aa32216 
      Kernel Extensions in backtrace:
         com.apple.driver.watchdog(1.0)[4CFADD2A-613E-320D-AD14-9C9379E87CB7]@0xffffff800ddfc000->0xffffff800ddfefff

Process name corresponding to current thread: watchdogd

Mac OS version:
20G165

Kernel version:
Darwin Kernel Version 20.6.0: Mon Aug 30 06:12:21 PDT 2021; root:xnu-7195.141.6~3/RELEASE_X86_64
Kernel UUID: C2591F4E-EE82-33CC-8C59-DB81D9AD80DD
KernelCache slide: 0x000000000a800000
KernelCache base:  0xffffff800aa00000
Kernel slide:      0x000000000a810000
Kernel text base:  0xffffff800aa10000
__HIB  text base: 0xffffff800a900000
System model name: MacPro6,1 (Mac-F60DEB81FF30ACF6)
System shutdown begun: NO
Panic diags file available: YES (0x0)
Hibernation exit count: 0

System uptime in nanoseconds: 51353920517105
Last Sleep:           absolute           base_tsc          base_nano
  Uptime  : 0x00002eb4c430bfe5
  Sleep   : 0x0000000000000000 0x0000000000000000 0x0000000000000000
  Wake    : 0x0000000000000000 0x0000000ce2d1888f 0x0000000000000000
last started kext at 124826600974: @filesystems.exfat	1.4 (addr 0xffffff7fa6299000, size 53248)
last stopped kext at 426920050127: >!AThunderboltEDMSink	5.0.3 (addr 0xffffff7fa5555000, size 32768)
loaded kexts:
@filesystems.exfat	1.4
@filesystems.smbfs	3.6.1
@filesystems.autofs	3.0
@fileutil	20.036.15
>!ATopCaseHIDEventDriver	4050.1
>!A!BMultitouch	99
@fsplaceholder	1.14.0
|IO!BSerialManager	8.0.5d7
>AudioAUUC	1.70
>!AUpstreamUserClient	3.6.8
>!AMCCSControl	1.14
>X86PlatformShim	1.0.0
>AGPM	122.1
>!APlatformEnabler	2.7.0d0
@kext.AMDFramebuffer	4.0.6
@kext.AMDRadeonX4000	4.0.6
@kext.AMDRadeonServiceManager	4.0.6
>!AGraphicsDevicePolicy	6.3.5
@AGDCPluginDisplayMetrics	6.3.5
>pmtelemetry	1
|IOUserEthernet	1.0.1
>!AHDA	283.15
>usb.!UUserHCI	1
@Dont_Steal_Mac_OS_X	7.0.0
>!AHV	1
>!ADiskImages2	1
>!A!ISlowAdaptiveClocking	4.0.0
>eficheck	1
>!ALPC	3.1
>!AThunderboltIP	4.0.3
@kext.AMD7000!C	4.0.6
>!A!IMCEReporter	115
>!AMGPUPowerControl	6.3.5
|IO!BUSBDFU	8.0.5d7
|SCSITaskUserClient	436.140.1
>!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
@filesystems.apfs	1677.141.2
>AirPort.BrcmNIC	1400.1.1
>!AAHCIPort	346.100.2
|!ABCM5701Ethernet	11.0.0
@private.KextAudit	1.0
>!AACPIButtons	6.1
>!AACPIEC	6.1
>!ARTC	2.0
>!AHPET	1.8
>!ASMBIOS	2.1
>!AAPIC	1.7
>!A!ICPUPowerManagementClient	222.0.0
@!ASystemPolicy	2.0.0
@nke.applicationfirewall	311
|IOKitRegistryCompatibility	1
|EndpointSecurity	1
>!A!ICPUPowerManagement	222.0.0
@kext.triggers	1.0
>!AHIDKeyboard	224
>!AHS!BDriver	4050.1
>IO!BHIDDriver	8.0.5d7
>!AMultitouchDriver	4440.3
>!AInputDeviceSupport	4400.35
|IOSerial!F	11
>!ASMBus!C	1.0.18d1
@kext.AMDRadeonX4030HWLibs	1.0
|IOAccelerator!F2	442.9
@kext.AMDRadeonX4000HWServices	4.0.6
>DspFuncLib	283.15
@kext.OSvKernDSPLib	529
|IOAVB!F	940.4
|IOEthernetAVB!C	1.1.0
@!AGPUWrangler	6.3.5
|IOSlowAdaptiveClocking!F	1.0.0
@plugin.IOgPTPPlugin	985.2
>X86PlatformPlugin	1.0.0
>IOPlatformPlugin!F	6.0.0d8
>!UMergeNub	900.4.2
>!UAudio	405.39
@kext.AMDSupport	4.0.6
@!AGraphicsDeviceControl	6.3.5
>!AThunderboltDPOutAdapter	8.1.4
>!AHDA!C	283.15
|IOHDA!F	283.15
|IOAudio!F	300.6.1
@vecLib.kext	1.2.0
>!AGraphicsControl	6.3.5
>!ABacklightExpert	1.1.0
|IONDRVSupport	585.1
|IOGraphics!F	585.1
|Broadcom!BHost!CUSBTransport	8.0.5d7
|IO!BHost!CUSBTransport	8.0.5d7
|IO!BHost!CTransport	8.0.5d7
>usb.IOUSBHostHIDDevice	1.2
>usb.!UHub	1.2
>usb.cdc	5.0.0
>usb.networking	5.0.0
>usb.!UHostCompositeDevice	1.2
>!AThunderboltDPInAdapter	8.1.4
>!AThunderboltDPAdapter!F	8.1.4
>!AThunderboltPCIDownAdapter	4.1.1
>!ABSDKextStarter	3
|IOSurface	290.8.1
@filesystems.hfs.encodings.kext	1
>!AXsanScheme	3
|IOAHCIBlock!S	332
>!AThunderboltNHI	7.2.8
|IOThunderbolt!F	9.3.2
>usb.!UHostPacketFilter	1.0
>usb.!UXHCIPCI	1.2
>usb.!UXHCI	1.2
|IO80211!F	1200.12.2b1
|IOSkywalk!F	1
>corecapture	1.0.4
|IOUSB!F	900.4.2
|IOAHCI!F	294.100.1
>mDNSOffloadUserClient	1.0.1b8
>usb.!UEHCIPCI	1.2
>usb.!UEHCI	1.2
>!AEFINVRAM	2.1
>!AEFIRuntime	2.1
|IOSMBus!F	1.1
|IOHID!F	2.0.0
$!AImage4	3.0.0
|IOTimeSync!F	985.2
|IONetworking!F	3.4
>DiskImages	493.0.0
|IO!B!F	8.0.5d7
|IOReport!F	47
|IO!BPacketLogger	8.0.5d7
$quarantine	4
$sandbox	300.0
@kext.!AMatch	1.0.0d1
|CoreAnalytics!F	1
>!ASSE	1.0
>!AKeyStore	2
>!UTDM	511.141.1
|IOUSBMass!SDriver	184.140.2
|IOSCSIBlockCommandsDevice	436.140.1
|IO!S!F	2.1
|IOSCSIArchitectureModel!F	436.140.1
>!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