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

Same exact issue started THIS week with macOS Big Sur 11.2.3.

Mac Pro (Rack, 2019)
Processor 3.2 GHz 16-Core Intel Xeon W
Memory 192 GB 2933 MHz DDR4
Graphics AMD Radeon Pro W5700X 16GB

Here's the most recent crash report which happened sometime at night:
panic(cpu 12 caller 0xffffff8020164a25): 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 load (73992 seconds ago): 7400, last successful checkin: 0 seconds ago
service: com.apple.WindowServer, total successful checkins since load (73960 seconds ago): 7396, last successful checkin: 0 seconds ago
service: com.apple.remoted, total successful checkins since load (73990 seconds ago): 7380, last successful checkin: 180 seconds ago

Backtrace (CPU 12), Frame : Return Address
0xffffffa30208b670 : 0xffffff801cebab4d
0xffffffa30208b6c0 : 0xffffff801cffd7e3
0xffffffa30208b700 : 0xffffff801cfede1a
0xffffffa30208b750 : 0xffffff801ce5fa2f
0xffffffa30208b770 : 0xffffff801ceba3ed
0xffffffa30208b890 : 0xffffff801ceba6d8
0xffffffa30208b900 : 0xffffff801d6bf004
0xffffffa30208b970 : 0xffffff8020164a25
0xffffffa30208b980 : 0xffffff8020164678
0xffffffa30208b9a0 : 0xffffff801d64628e
0xffffffa30208b9f0 : 0xffffff8020163ab4
0xffffffa30208bb20 : 0xffffff801d65045b
0xffffffa30208bc80 : 0xffffff801cfa8e51
0xffffffa30208bd90 : 0xffffff801cec0147
0xffffffa30208be00 : 0xffffff801ce96905
0xffffffa30208be60 : 0xffffff801ceae062
0xffffffa30208bef0 : 0xffffff801cfd1fc3
0xffffffa30208bfa0 : 0xffffff801ce60216
Kernel Extensions in backtrace:
com.apple.driver.watchdog(1.0)[2C1307C5-FD71-3802-8D68-A67DB24BCB4A]@0xffffff8020163000->0xffffff8020164fff

Process name corresponding to current thread: watchdogd
Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev

Mac OS version:
20D91

Kernel version:
Darwin Kernel Version 20.3.0: Thu Jan 21 00:07:06 PST 2021; root:xnu-7195.81.3~1/RELEASE_X86_64
Kernel UUID: C86236B2-4976-3542-80CA-74A6B8B4BA03
KernelCache slide: 0x000000001cc00000
KernelCache base: 0xffffff801ce00000
Kernel slide: 0x000000001cc10000
Kernel text base: 0xffffff801ce10000
__HIB text base: 0xffffff801cd00000
System model name: MacPro7,1 (Mac-27AD2F918AE68F61)
System shutdown begun: NO
Hibernation exit count: 0

System uptime in nanoseconds: 74013866514295
Last Sleep: absolute base_tsc base_nano
Uptime : 0x00004350b238da8b
Sleep : 0x0000000000000000 0x0000000000000000 0x0000000000000000
Wake : 0x0000000000000000 0x00000022da5c3f9a 0x0000000000000000
last started kext at 31367028313439: >usb.!UUserHCI 1 (addr 0xffffff7fbd79f000, size 102400)
last stopped kext at 31507674180114: >usb.!UUserHCI 1 (addr 0xffffff7fbd79f000, size 102400)
loaded kexts:
com.audinate.dante.driver.DanteVirtualSoundcard 1.0.0
com.IDrive.RemotePCSound 1.0.0d1
com.lacie.driver.mvumi 1.3.21

!APlatformEnabler 2.7.0d0
AGPM 119
X86PlatformShim 1.0.0
@filesystems.autofs 3.0
@fsplaceholder 1.14.0
@fileutil 20.036.15
!AUpstreamUserClient 3.6.8
!AMCCSControl 1.14
@kext.AMDRadeonX6000 4.0.2
@kext.AMDRadeonServiceManager 4.0.2
AudioAUUC 1.70
!AGraphicsDevicePolicy 6.2.2
@AGDCPluginDisplayMetrics 6.2.2
pmtelemetry 1
LuaHardwareAccess 1.0.16
|IOUserEthernet 1.0.1
|IO!BSerialManager 8.0.3d9
@Dont_Steal_Mac_OS_X 7.0.0
!AHV 1
!ADiskImages2 1
!AAfterburner 2.4
!A!IMCEReporter 115
BridgeAudioCommunication 100.2
!AGFXHDA 100.1.431
!ABridgeAudio!C 100.2
!A!IPCHPMC 2.0.1
!A!ISlowAdaptiveClocking 4.0.0
!AAVEBridge 6.1
!AThunderboltIP 4.0.3
|SCSITaskUserClient 436.40.6
usb.!UHostBillboardDevice 1.0
BCMWLANFirmware4378.Hashstore 1
BCMWLANFirmware4377.Hashstore 1
BCMWLANFirmware4364.Hashstore 1
BCMWLANFirmware4355.Hashstore 1
@filesystems.tmpfs 1
@filesystems.hfs.kext 556.60.1
@BootCache 40
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
!ABCMWLANBusInterfacePCIeMac 1
@filesystems.apfs 1677.81.1
!AAHCIPort 346
@private.KextAudit 1.0
!AACPIButtons 6.1
!ASMBIOS 2.1
!AACPIEC 6.1
!AAPIC 1.7
@!ASystemPolicy 2.0.0
@nke.applicationfirewall 310
|IOKitRegistryCompatibility 1
|EndpointSecurity 1
@kext.triggers 1.0
|IO!BHost!CUARTTransport 8.0.3d9
|IO!BHost!CTransport 8.0.3d9
!AHIDKeyboard 223
!ASMBus!C 1.0.18d1
|IOAccelerator!F2 439.52
!AGraphicsControl 6.2.2
|IOAVB!F 930.1
@!AGPUWrangler 6.2.2
|IOSCSIParallel!F 3.0.0
usb.cdc.acm 5.0.0
usb.serial 6.0.0
@kext.AMDRadeonX6700HWLibs 1.0
!UAudio 401.4
|IOAudio!F 300.6.1
@vecLib.kext 1.2.0
@plugin.IOgPTPPlugin 900.11
|IOEthernetAVB!C 1.1.0
|IONDRVSupport 585
|IOSlowAdaptiveClocking!F 1.0.0
@kext.AMDRadeonX6000Framebuffer 4.0.2
@kext.AMDSupport 4.0.2
@!AGraphicsDeviceControl 6.2.2
@kext.AMDRadeonX6000HWServices 4.0.2
|IOGraphics!F 585
!A16X50Serial 3.2
X86PlatformPlugin 1.0.0
IOPlatformPlugin!F 6.0.0d8
usb.cdc.ncm 5.0.0
usb.!UHub 1.2
usb.cdc 5.0.0
usb.networking 5.0.0
usb.!UHostCompositeDevice 1.2
!AThunderboltDPOutAdapter 8.1.4
!AThunderboltPCIUpAdapter 4.1.1
!AThunderboltPCIDownAdapter 4.1.1
!AThunderboltDPInAdapter 8.1.4
!AThunderboltDPAdapter!F 8.1.4
!AHPM 3.4.4
!A!ILpssI2C!C 3.0.60
!A!ILpssDmac 3.0.60
!ABSDKextStarter 3
|IOSurface 289.3
@filesystems.hfs.encodings.kext 1
!AEthernetAquantiaAqtion 1.0.64
!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
!AThunderboltNHI 7.2.8
|IOThunderbolt!F 9.3.2
|IOUSB!F 900.4.2
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
!A!ILpssI2C 3.0.60
|IOAHCI!F 294
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 900.11
|IONetworking!F 3.4
DiskImages 493.0.0
|IO!B!F 8.0.3d9
|IOReport!F 47
|IO!BPacketLogger 8.0.3d9
$quarantine 4
$sandbox 300.0
@kext.!AMatch 1.0.0d1
|CoreAnalytics!F 1
!ASSE 1.0
!AKeyStore 2
!UTDM 511.60.2
|IOUSBMass!SDriver 184.40.6
|IOSCSIBlockCommandsDevice 436.40.6
|IO!S!F 2.1
|IOSCSIArchitectureModel!F 436.40.6
!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 am having the same problem since upgrading to Big Sur. I am on MacBook Pro (16-inch, 2019, 64 GB. 2,3 GHz 8-Core Intel Core i9.AMD Radeon Pro 5500M 8 GB / Intel UHD Graphics 630 1536 MB). When I disable the automatic graphic switching it gets a little better but I have to reset the Mac 2/3 times a day . I am using just Zoom/Slack/Safari. What´s going on?

I've removed the Soundflower kext and my issues with the com.apple.firehose.io-wl panics seems to be solved...

Same issue. Every two days I'm presented with a rebooted iMac in the morning. 1 external drive for Time Machine and a Fujitsu IX500 scanner attached. This has been happening under Big Sur for many months.

I've having the exact same problem. It happens every 2 to 7 days, but at least once a week. It started with the Big Sur OS installation. Never had a problem before upgrading to that OS. ASeems every OS Apple releases, whether on a laptop or phone is bugged to the point it shouldn't have been released.

This system crasher has been here for months. It needs fixed yesterday. Sincerely question whether quality is something Apple cares about these days, much less prides itself on.

Code Block 
panic(cpu 4 caller 0xffffff8006d64a25): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds

Ditto, what was a hugely stable iMac Pro, after upgrade to Big Sur now seems to reboot sporadically.

Typically opaque Apple response ... crickets.

I hope everyone is sending Apple the crash report after rebooting - I am.

So, I was having this really frustrating issue with my iMac Retina 5K 4 GHz Quad-Core Intel Core i7 after I upgraded to Big Sur, it would crash randomly about 10 times a day. After days and days researching without success I finally stumbled upon a list of easy fixes you can try, including resetting your Mac's NVRAM, which I did. It's been 3 days and no crashes yet. Some of you might have done this already, but for those of you who haven't, this might be the solution you were looking for.

The list of easy fixes was posted by Michael Kummer in his website and it's called "The Top 11 Tricks to Fix Common Mac Problems Quickly".

I might add that along with this I also cleared all the caches and deleted some apps I even forgot I had.

Hope this helps someone.

Same issue here...randomly restarts at night.

• *********************************************

panic(cpu 8 caller 0xffffff8019364a25): 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 load (209062 seconds ago): 20895, last successful checkin: 120 seconds ago

service: com.apple.WindowServer, total successful checkins since load (208912 seconds ago): 20891, last successful checkin: 0 seconds ago



Backtrace (CPU 8), Frame : Return Address

0xffffffc135acb670 : 0xffffff80160bab4d 

0xffffffc135acb6c0 : 0xffffff80161fd7e3 

0xffffffc135acb700 : 0xffffff80161ede1a 

0xffffffc135acb750 : 0xffffff801605fa2f 

0xffffffc135acb770 : 0xffffff80160ba3ed 

0xffffffc135acb890 : 0xffffff80160ba6d8 

0xffffffc135acb900 : 0xffffff80168bf004 

0xffffffc135acb970 : 0xffffff8019364a25 

0xffffffc135acb980 : 0xffffff8019364678 

0xffffffc135acb9a0 : 0xffffff801684628e 

0xffffffc135acb9f0 : 0xffffff8019363ab4 

0xffffffc135acbb20 : 0xffffff801685045b 

0xffffffc135acbc80 : 0xffffff80161a8e51 

0xffffffc135acbd90 : 0xffffff80160c0147 

0xffffffc135acbe00 : 0xffffff8016096905 

0xffffffc135acbe60 : 0xffffff80160ae062 

0xffffffc135acbef0 : 0xffffff80161d1fc3 

0xffffffc135acbfa0 : 0xffffff8016060216 

      Kernel Extensions in backtrace:

         com.apple.driver.watchdog(1.0)[2C1307C5-FD71-3802-8D68-A67DB24BCB4A]@0xffffff8019363000->0xffffff8019364fff



Process name corresponding to current thread: watchdogd



Mac OS version:

20D91



Kernel version:

Darwin Kernel Version 20.3.0: Thu Jan 21 00:07:06 PST 2021; root:xnu-7195.81.3~1/RELEASE_X86_64

Kernel UUID: C86236B2-4976-3542-80CA-74A6B8B4BA03

KernelCache slide: 0x0000000015e00000

KernelCache base:  0xffffff8016000000

Kernel slide:      0x0000000015e10000

Kernel text base:  0xffffff8016010000

__HIB  text base: 0xffffff8015f00000

System model name: iMac19,2 (Mac-63001698E7A34814)

System shutdown begun: NO

Panic diags file available: YES (0x0)

Hibernation exit count: 0



System uptime in nanoseconds: 209076585342279

Last Sleep:           absolute           base_tsc          base_nano

  Uptime  : 0x0000be276f99aa0d

  Sleep   : 0x0000000000000000 0x0000000000000000 0x0000000000000000

  Wake    : 0x0000000000000000 0x000000156e07f096 0x0000000000000000

last started kext at 199907094053415: >usb.!UUserHCI 1 (addr 0xffffff7fb699f000, size 102400)

last stopped kext at 200007976296205: >usb.!UUserHCI 1 (addr 0xffffff7fb699f000, size 102400)

loaded kexts:

com.egnyte.EgnyteFS.filesystems.egnytefs 2053.20

com.Creative.driver.TruStudioPCUSBAudioPlugin 2.3.51

@filesystems.smbfs 3.4.1

!A!BMultitouch 99

!ATopCaseHIDEventDriver 4030.5

!APlatformEnabler 2.7.0d0

AGPM 119

X86PlatformShim 1.0.0

!AUpstreamUserClient 3.6.8

@kext.AMDFramebuffer 4.0.2

@filesystems.autofs 3.0

@fileutil 20.036.15

@kext.AMDRadeonX4000 4.0.2

@kext.AMDRadeonServiceManager 4.0.2

!AGraphicsDevicePolicy 6.2.2

!AHDA 283.15

@AGDCPluginDisplayMetrics 6.2.2

pmtelemetry 1

LuaHardwareAccess 1.0.16

|IOUserEthernet 1.0.1

|IO!BSerialManager 8.0.3d9

@Dont_Steal_Mac_OS_X 7.0.0

!AHV 1

!ADiskImages2 1

!A!ISlowAdaptiveClocking 4.0.0

!A!IKBLGraphics 16.0.1

!ASMCLMU 212

!AGFXHDA 100.1.431

!A!IPCHPMC 2.0.1

AudioAUUC 1.70

!AMCCSControl 1.14

@kext.AMD9500!C 4.0.2

!A!ICFLGraphicsFramebuffer 16.0.1

eficheck 1

!AThunderboltIP 4.0.3

!UODD 511.60.2

usb.realtek8153patcher 5.0.0

|SCSITaskUserClient 436.40.6

BCMWLANFirmware4378.Hashstore 1

BCMWLANFirmware4377.Hashstore 1

BCMWLANFirmware4364.Hashstore 1

BCMWLANFirmware4355.Hashstore 1

@filesystems.tmpfs 1

@filesystems.hfs.kext 556.60.1

@BootCache 40

@!AFSCompression.!AFSCompressionTypeZlib 1.0.0

@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1

!ASDXC 1.9.0

|!ABCM5701Ethernet 11.0.0

!ABCMWLANBusInterfacePCIeMac 1

@filesystems.apfs 1677.81.1

!AAHCIPort 346

@private.KextAudit 1.0

!AACPIButtons 6.1

!ARTC 2.0

!ASMBIOS 2.1

!AACPIEC 6.1

!AAPIC 1.7

@!ASystemPolicy 2.0.0

@nke.applicationfirewall 310

|IOKitRegistryCompatibility 1

|EndpointSecurity 1

!AHIDKeyboard 223

!AMultitouchDriver 4400.28

!AInputDeviceSupport 4400.35

!AHS!BDriver 4030.5

IO!BHIDDriver 8.0.3d9

@kext.triggers 1.0

@kext.AMDRadeonX4400HWLibs 1.0

@kext.AMDRadeonX4000HWServices 4.0.2

!AGraphicsControl 6.2.2

DspFuncLib 283.15

@kext.OSvKernDSPLib 529

@!AGPUWrangler 6.2.2

|IOSlowAdaptiveClocking!F 1.0.0

|IOAVB!F 930.1

@plugin.IOgPTPPlugin 900.11

|IOEthernetAVB!C 1.1.0

!ASMBusPCI 1.0.14d1

!AHDA!C 283.15

|IOHDA!F 283.15

|IO!BHost!CUARTTransport 8.0.3d9

|IO!BHost!CTransport 8.0.3d9

|IONDRVSupport 585

!ASMBus!C 1.0.18d1

@kext.AMDSupport 4.0.2

|IOAccelerator!F2 439.52

@!AGraphicsDeviceControl 6.2.2

|IOGraphics!F 585

@plugin.IOAVBDiscoveryPlugin 930.1

!UAudio 401.4

|IOAudio!F 300.6.1

@vecLib.kext 1.2.0

X86PlatformPlugin 1.0.0

IOPlatformPlugin!F 6.0.0d8

!A!ILpssUARTv1 3.0.60

!A!ILpssUARTCommon 3.0.60

!AOnboardSerial 1.0

|IOSCSIMultimediaCommandsDevice 436.40.6

|IOBD!S!F 1.8

|IODVD!S!F 1.8

|IOCD!S!F 1.8

usb.!UHub 1.2

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 289.3

@filesystems.hfs.encodings.kext 1

!AThunderboltNHI 7.2.8

|IOThunderbolt!F 9.3.2

!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

|IOAHCIBlock!S 332

|IONVMe!F 2.1.0

|IOAHCI!F 294

usb.!UXHCIPCI 1.2

usb.!UXHCI 1.2

|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 900.11

|IONetworking!F 3.4

DiskImages 493.0.0

|IO!B!F 8.0.3d9

|IOReport!F 47

|IO!BPacketLogger 8.0.3d9

$quarantine 4

$sandbox 300.0

@kext.!AMatch 1.0.0d1

|CoreAnalytics!F 1

!ASSE 1.0

!AKeyStore 2

!UTDM 511.60.2

|IOUSBMass!SDriver 184.40.6

|IOSCSIBlockCommandsDevice 436.40.6

|IO!S!F 2.1

|IOSCSIArchitectureModel!F 436.40.6

!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 here: macpro late 2013, sometimes 3x times a day, sometimes once in a week
crashes only if am not working on the computer

Same issue here, apparently. Computer starts crawling to a halt after "heavy" usage (any video app, for instance, or Music, or Office Apps). Either that or reboots after a few minutes when trying to wake up. And OneDrive always crashes. And indexing NEVER stops. I've got a second screen on Thunderbolt and external HDs through USB.

iMac (Retina 5K, 27-inch, 2019), 3,1 GHz 6-Core Intel Core i5, 16 GB 2667 MHz DDR4, Radeon Pro 575X 4 GB

panic(cpu 1 caller 0xffffff800b764a25): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 163 seconds
service returned not alive with context : is_alive_func returned unhealthy : WindowServer initialization not complete (post IOKitWaitQuiet)
service: com.apple.logd, total successful checkins since load (247328 seconds ago): 24724, last successful checkin: 0 seconds ago
service: com.apple.WindowServer, total successful checkins since load (247298 seconds ago): 24713, last successful checkin: 163 seconds ago

Backtrace (CPU 1), Frame : Return Address
0xffffffa07c833670 : 0xffffff80084bab4d
0xffffffa07c8336c0 : 0xffffff80085fd7e3
0xffffffa07c833700 : 0xffffff80085ede1a
0xffffffa07c833750 : 0xffffff800845fa2f
0xffffffa07c833770 : 0xffffff80084ba3ed
0xffffffa07c833890 : 0xffffff80084ba6d8
0xffffffa07c833900 : 0xffffff8008cbf004
0xffffffa07c833970 : 0xffffff800b764a25
0xffffffa07c833980 : 0xffffff800b764678
0xffffffa07c8339a0 : 0xffffff8008c4628e
0xffffffa07c8339f0 : 0xffffff800b763ab4
0xffffffa07c833b20 : 0xffffff8008c5045b
0xffffffa07c833c80 : 0xffffff80085a8e51
0xffffffa07c833d90 : 0xffffff80084c0147
0xffffffa07c833e00 : 0xffffff8008496905
0xffffffa07c833e60 : 0xffffff80084ae062
0xffffffa07c833ef0 : 0xffffff80085d1fc3
0xffffffa07c833fa0 : 0xffffff8008460216
Kernel Extensions in backtrace:
com.apple.driver.watchdog(1.0)[2C1307C5-FD71-3802-8D68-A67DB24BCB4A]@0xffffff800b763000->0xffffff800b764fff

Process name corresponding to current thread: watchdogd

Mac OS version:
20D91

Kernel version:
Darwin Kernel Version 20.3.0: Thu Jan 21 00:07:06 PST 2021; root:xnu-7195.81.3~1/RELEASE_X86_64
Kernel UUID: C86236B2-4976-3542-80CA-74A6B8B4BA03
KernelCache slide: 0x0000000008200000
KernelCache base: 0xffffff8008400000
Kernel slide: 0x0000000008210000
Kernel text base: 0xffffff8008410000
__HIB text base: 0xffffff8008300000
System model name: iMac19,1 (Mac-AA95B1DDAB278B95)
System shutdown begun: NO
Panic diags file available: YES (0x0)
Hibernation exit count: 0

System uptime in nanoseconds: 247340380335411
Last Sleep: absolute base_tsc base_nano
Uptime : 0x0000e0f46b823148
Sleep : 0x0000000000000000 0x0000000000000000 0x0000000000000000
Wake : 0x0000000000000000 0x0000000923bbc998 0x0000000000000000
last started kext at 235011561901553: >usb.!UUserHCI 1 (addr 0xffffff7fa8d9f000, size 102400)
last stopped kext at 7795567663674: >!ASMCRTC 1.0 (addr 0xffffff8009ab1000, size 16384)
loaded kexts:
com.paragon-software.filesystems.ntfs 17.6.15

usb.!UUserHCI 1
@filesystems.afpfs 11.3
@nke.asp_tcp 8.2
usb.!UHostBillboardDevice 1.0
|SCSITaskUserClient 436.40.6
AudioAUUC 1.70
AGPM 119
!APlatformEnabler 2.7.0d0
X86PlatformShim 1.0.0
@fsplaceholder 1.14.0
@fileutil 20.036.15
!AUpstreamUserClient 3.6.8
@kext.AMDFramebuffer 4.0.2
@filesystems.autofs 3.0
@kext.AMDRadeonX4000 4.0.2
@kext.AMDRadeonServiceManager 4.0.2
!AHDA 283.15
!AGraphicsDevicePolicy 6.2.2
eficheck 1
@AGDCPluginDisplayMetrics 6.2.2
!A!IKBLGraphics 16.0.1
pmtelemetry 1
LuaHardwareAccess 1.0.16
|IOUserEthernet 1.0.1
|IO!BSerialManager 8.0.3d9
@Dont_Steal_Mac_OS_X 7.0.0
!AHV 1
!ADiskImages2 1
!A!ICFLGraphicsFramebuffer 16.0.1
!ASMCLMU 212
!A!ISlowAdaptiveClocking 4.0.0
!AMCCSControl 1.14
@kext.AMD9500!C 4.0.2
!AGFXHDA 100.1.431
!AThunderboltIP 4.0.3
!A!IPCHPMC 2.0.1
!ATopCaseHIDEventDriver 4030.5
!UTopCaseDriver 4030.5
BCMWLANFirmware4378.Hashstore 1
BCMWLANFirmware4377.Hashstore 1
BCMWLANFirmware4364.Hashstore 1
BCMWLANFirmware4355.Hashstore 1
@filesystems.tmpfs 1
@filesystems.hfs.kext 556.60.1
@BootCache 40
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
|!ABCM5701Ethernet 11.0.0
!ASDXC 1.9.0
!ABCMWLANBusInterfacePCIeMac 1
@filesystems.apfs 1677.81.1
!AAHCIPort 346
@private.KextAudit 1.0
!AACPIButtons 6.1
!ARTC 2.0
!ASMBIOS 2.1
!AACPIEC 6.1
!AAPIC 1.7
@!ASystemPolicy 2.0.0
@nke.applicationfirewall 310
|IOKitRegistryCompatibility 1
|EndpointSecurity 1
!AXsanScheme 3
$SecureRemotePassword 1.0
|IOSCSIMultimediaCommandsDevice 436.40.6
|IOBD!S!F 1.8
|IODVD!S!F 1.8
|IOCD!S!F 1.8
!AActuatorDriver 4400.28
@kext.triggers 1.0
@kext.AMDRadeonX4400HWLibs 1.0
@kext.AMDRadeonX4000HWServices 4.0.2
DspFuncLib 283.15
@kext.OSvKernDSPLib 529
!AGraphicsControl 6.2.2
|IOAVB!F 930.1
@plugin.IOgPTPPlugin 900.11
|IOEthernetAVB!C 1.1.0
|IOAccelerator!F2 439.52
@!AGPUWrangler 6.2.2
|IOSlowAdaptiveClocking!F 1.0.0
|IO!BHost!CUARTTransport 8.0.3d9
|IO!BHost!CTransport 8.0.3d9
X86PlatformPlugin 1.0.0
!ASMBus!C 1.0.18d1
!ASMBusPCI 1.0.14d1
@kext.AMDSupport 4.0.2
@!AGraphicsDeviceControl 6.2.2
!AHDA!C 283.15
|IOHDA!F 283.15
|IONDRVSupport 585
|IOGraphics!F 585
|IOAudio!F 300.6.1
@vecLib.kext 1.2.0
!A!ILpssUARTv1 3.0.60
!A!ILpssUARTCommon 3.0.60
!AOnboardSerial 1.0
IOPlatformPlugin!F 6.0.0d8
usb.!UHub 1.2
!AHS!BDriver 4030.5
IO!BHIDDriver 8.0.3d9
usb.IOUSBHostHIDDevice 1.2
!AMultitouchDriver 4400.28
!AInputDeviceSupport 4400.35
!AHIDKeyboard 223
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
!AThunderboltNHI 7.2.8
|IOThunderbolt!F 9.3.2
!ABSDKextStarter 3
|IOSurface 289.3
@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
|IOAHCIBlock!S 332
|IONVMe!F 2.1.0
usb.!UXHCIPCI 1.2
usb.!UXHCI 1.2
|IOAHCI!F 294
|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 900.11
|IONetworking!F 3.4
DiskImages 493.0.0
|IO!B!F 8.0.3d9
|IOReport!F 47
|IO!BPacketLogger 8.0.3d9
$quarantine 4
$sandbox 300.0
@kext.!AMatch 1.0.0d1
|CoreAnalytics!F 1
!ASSE 1.0
!AKeyStore 2
!UTDM 511.60.2
|IOUSBMass!SDriver 184.40.6
|IOSCSIBlockCommandsDevice 436.40.6
|IO!S!F 2.1
|IOSCSIArchitectureModel!F 436.40.6
!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 managed to solve this problem by resetting OneDrive. From Microsoft:

1. Quit OneDrive. (Select the cloud icon in the top tray, then select Settings > Quit OneDrive.)

2. Find OneDrive in your Applications folder.

3. Right-click OneDrive and select Show Package Contents.

4. Browse to the Contents > Resources folder.

5. Double-click ResetOneDriveApp.command (or ResetOneDriveAppStandalone.command, if you're using the standalone app).

6. Start OneDrive and finish the setup process.

Same here after upgrading to Big Sur and installing Avira Antivirus...

is there any fix yet?

been experiencing this for the past three months, ever since I upgraded to macOS 11.2.

my machine is 13" MacBook Pro with Retina Display (Early 2015).

I've done practically everything:

• Disabling login items
• Reinstalling macOS from Recovery Mode
• Constantly resetting NVRAM and PRAM just to get out of the boot loop
• Wipe clean my MacBook and installed a fresh copy of macOS Big Sur
• ditch this Mac and get a new one

I have been having these a lot lately. I am having flashbacks from Windows ME.

userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds

I think this was an issue durring one of the last updates in OS X.

same problem here - IMAC 2017 with Big Sur 11.3.1.
crashes almost daily - never had this before.

First i suspected overheating and activity monitor showed almost 99% CPU time for one drive (which i never use). I de-installed one-drive and then unit worked fine. After upgrade to 11.3.1. Big sur now these crashes. Big headache.

Same issue here.
Apple, please help!

My Mac panics every time I try to run Visual Studio (on Windows, Parallels Desktop) and try to debug an iOS app (which runs Xamarin on Mac => Xcode). The problem starts to occur since updating to XCode 12.5.


macOS BigSur
v. 11.3.1 (20E241)

MacBook Pro (16-inch, 2019)
2,4 GHz Intel Core i9 8 core
64 GB 2667 MHz DDR4
Intel UHD Graphics 630 1536 MB

Code Block 
  "build" : "Bridge OS 5.3 (18P4556)",
  "crashReporterKey" : "c0dec0dec0dec0dec0dec0dec0dec0dec0de0001",
  "date" : "2021-05-13 14:30:41.34 +0000",
  "incident" : "D08D6DA6-633B-4F09-AF9F-A109EA4CBA9A",
  "kernel" : "Darwin Kernel Version 20.4.0: Thu Mar  4 23:34:36 PST 2021; root:xnu-7195.101.1~1\/RELEASE_ARM64_T8010",
  "macOSOtherString" : "\n In Memory Panic Stackshot Succeeded  Bytes Traced 188132 (Uncompressed 474976) **\n",
  "macOSPanicFlags" : "0xc",
  "macOSPanicString" : "panic(cpu 6 caller 0xffffff801bdeba25): userspace watchdog timeout: no successful checkins from com.apple.logd in 120 seconds\nservice returned not alive with context : unresponsive dispatch queue(s): com.apple.firehose.io-wl \nservice: com.apple.logd, total successful checkins since load (3730 seconds ago): 362, last successful checkin: 120 seconds ago\nservice: com.apple.WindowServer, total successful checkins since load (3700 seconds ago): 358, last successful checkin: 120 seconds ago\nservice: com.apple.remoted, total successful checkins since load (3730 seconds ago): 372, last successful checkin: 0 seconds ago\n\nBacktrace (CPU 6), Frame : Return Address\n0xffffffc1ce71b670 : 0xffffff8018a8e02d \n0xffffffc1ce71b6c0 : 0xffffff8018bd48e3 \n0xffffffc1ce71b700 : 0xffffff8018bc4eda \n0xffffffc1ce71b750 : 0xffffff8018a32a2f \n0xffffffc1ce71b770 : 0xffffff8018a8d84d \n0xffffffc1ce71b890 : 0xffffff8018a8db43 \n0xffffffc1ce71b900 : 0xffffff801929d6f4 \n0xffffffc1ce71b970 : 0xffffff801bdeba25 \n0xffffffc1ce71b980 : 0xffffff801bdeb660 \n0xffffffc1ce71b9a0 : 0xffffff801921eede \n0xffffffc1ce71b9f0 : 0xffffff801bdeaa34 \n0xffffffc1ce71bb20 : 0xffffff801922911b \n0xffffffc1ce71bc80 : 0xffffff8018b80401 \n0xffffffc1ce71bd90 : 0xffffff8018a936ad \n0xffffffc1ce71be00 : 0xffffff8018a69c85 \n0xffffffc1ce71be60 : 0xffffff8018a812a2 \n0xffffffc1ce71bef0 : 0xffffff8018ba91fd \n0xffffffc1ce71bfa0 : 0xffffff8018a33216 \n      Kernel Extensions in backtrace:\n         com.apple.driver.watchdog(1.0)[57B278ED-0B7C-3544-9CFE-53963BB1DAF3]@0xffffff801bde9000->0xffffff801bdebfff\n\nProcess name corresponding to current thread: watchdogd\nBoot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev\n\nMac OS version:\n20E241\n\nKernel version:\nDarwin Kernel Version 20.4.0: Thu Apr 22 21:46:47 PDT 2021; root:xnu-7195.101.2~1\/RELEASE_X86_64\nKernel UUID: 068F99A3-1DB3-31C0-87D5-09942F122BB6\nKernelCache slide: 0x0000000018800000\nKernelCache base:  0xffffff8018a00000\nKernel slide:      0x0000000018810000\nKernel text base:  0xffffff8018a10000\n__HIB  text base: 0xffffff8018900000\nSystem model name: MacBookPro16,1 (Mac-E1008331FDC96864)\nSystem shutdown begun: NO\nHibernation exit count: 0\n\nSystem uptime in nanoseconds: 3745315881131\nLast Sleep:           absolute           base_tsc          base_nano\n  Uptime  : 0x000003680639087d\n  Sleep   : 0x0000000000000000 0x0000000000000000 0x0000000000000000\n  Wake    : 0x0000000000000000 0x00000003e7e63e5a 0x0000000000000000\nlast started kext at 2652656710011: com.eltima.ElmediaPlayer.kext\t1.0 (addr 0xffffff7fb3bbc000, size 8192)\nlast stopped kext at 269583496430: >IOPlatformPluginLegacy\t1.0.0 (addr 0xffffff7fb2104000, size 36864)\nloaded kexts:\ncom.eltima.ElmediaPlayer.kext\t1.0\ncom.parallels.kext.usbconnect\t16.1.3 49160\ncom.parallels.kext.netbridge\t16.1.3 49160\ncom.parallels.kext.vnic\t16.1.3 49160\ncom.parallels.kext.hypervisor\t16.1.3 49160\ncom.intel.driver.EnergyDriver\t3.7.0\n@filesystems.smbfs\t3.5\n>AGPM\t122\n>!

So this is still happening just now it is a different error than Watchdog now it is saying AMDFrambuffer and it is crashing randomly when I am using it.

What I have done so far...

1. reset using all key combinations at startup

2. delete hard drive and reinstall

3. turned off power saver features with monitors

4. selected mac color profiles for external monitors

5. pull hair out and consider going back to Windows

I run 3 external monitors one 27" LG 4k and 2 24" dell HD monitors off of my iMac Pro. System and error is as follows...

Model Name: iMac Pro
Model Identifier: iMacPro1,1
Processor Name: 8-Core Intel Xeon W
Processor Speed: 3.2 GHz
Number of Processors: 1
Total Number of Cores: 8
L2 Cache (per Core): 1 MB
L3 Cache: 11 MB
Hyper-Threading Technology: Enabled
Memory: 32 GB

panic(cpu 0 caller 0xffffff800e3d5f07): "AMDFramebufferVega10::setPowerState(0xffffff93786e4800 : 0xffffff7fa72b3c1c, 2 -> 1) timed out after 45611 ms"@/System/Volumes/Data/SWE/macOS/BuildRoots/2288acc43c/Library/Caches/com.apple.xbs/Sources/xnu/xnu-7195.101.2/iokit/Kernel/IOServicePM.cpp:5382
Backtrace (CPU 0), Frame : Return Address
0xffffffc111b03ac0 : 0xffffff800dc8e02d
0xffffffc111b03b10 : 0xffffff800ddd48e3
0xffffffc111b03b50 : 0xffffff800ddc4eda
0xffffffc111b03ba0 : 0xffffff800dc32a2f
0xffffffc111b03bc0 : 0xffffff800dc8d84d
0xffffffc111b03ce0 : 0xffffff800dc8db43
0xffffffc111b03d50 : 0xffffff800e49d68a
0xffffffc111b03dc0 : 0xffffff800e3d5f07
0xffffffc111b03e10 : 0xffffff800e3d5829
0xffffffc111b03e20 : 0xffffff800e3ee96e
0xffffffc111b03e60 : 0xffffff800e3d45a8
0xffffffc111b03e80 : 0xffffff800dcd44b5
0xffffffc111b03ef0 : 0xffffff800dcd5424
0xffffffc111b03fa0 : 0xffffff800dc3213e

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: 0x000000000da00000
KernelCache base: 0xffffff800dc00000
Kernel slide: 0x000000000da10000
Kernel text base: 0xffffff800dc10000
__HIB text base: 0xffffff800db00000
System model name: iMacPro1,1 (Mac-7BA5B2D9E42DDD94)
System shutdown begun: NO
Hibernation exit count: 0

System uptime in nanoseconds: 1173030792263
Last Sleep: absolute base_tsc base_nano
Uptime : 0x000001111e1574d2
Sleep : 0x0000000000000000 0x0000000000000000 0x0000000000000000
Wake : 0x0000000000000000 0x0000000b7ebe19ca 0x0000000000000000
last started kext at 118468815923: @filesystems.smbfs 3.5 (addr 0xffffff7fa7ca6000, size 487424)
last stopped kext at 519608357640: |IOHDA!F 283.15 (addr 0xffffff7fa5d05000, size 16384)
loaded kexts:
@filesystems.smbfs 3.5

!ATopCaseHIDEventDriver 4040.11
AudioAUUC 1.70
AGPM 122
!APlatformEnabler 2.7.0d0
X86PlatformShim 1.0.0
@filesystems.autofs 3.0
!AHIDALSService 1
!AUpstreamUserClient 3.6.8
@kext.AMDFramebuffer 4.0.4
@fileutil 20.036.15
@kext.AMDRadeonServiceManager 4.0.4
@kext.AMDRadeonX5000 4.0.4
!AGraphicsDevicePolicy 6.2.9
@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
BridgeAudioCommunication 140.4
!AAVEBridge 6.1
!A!ISlowAdaptiveClocking 4.0.0
!AGFXHDA 100.1.433
@kext.AMD10000!C 4.0.4
!AMCCSControl 1.14
!A!IPCHPMC 2.0.1
!AThunderboltIP 4.0.3
!A!IMCEReporter 115
!ABridgeAudio!C 140.4
usb.!UHostBillboardDevice 1.0
!UCardReader 511.101.1
@!AEthernetAquantiaAqtionFirmware 1.0.36
|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
@filesystems.apfs 1677.100.114
!ABCMWLANBusInterfacePCIeMac 1
@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
!AHIDKeyboard 224
!AMultitouchDriver 4440.3
!AInputDeviceSupport 4400.35
!AHS!BDriver 4040.11
IO!BHIDDriver 8.0.4d18
@kext.triggers 1.0
@kext.AMDRadeonX5100HWLibs 1.0
|IOAccelerator!F2 442.9
@kext.AMDRadeonX5000HWServices 4.0.4
|IOAVB!F 940.4
|IOEthernetAVB!C 1.1.0
X86PlatformPlugin 1.0.0
@plugin.IOgPTPPlugin 980.4
|IO!BHost!CUARTTransport 8.0.4d18
|IO!BHost!CTransport 8.0.4d18
@!AGPUWrangler 6.2.9
|IOSlowAdaptiveClocking!F 1.0.0
|IONDRVSupport 585.1
@kext.AMDSupport 4.0.4
!ASMBus!C 1.0.18d1
usb.IOUSBHostHIDDevice 1.2
!A!ILpssUARTv1 3.0.60
!A!ILpssUARTCommon 3.0.60
!AOnboardSerial 1.0
!AGraphicsControl 6.2.9
@!AGraphicsDeviceControl 6.2.9
IOPlatformPlugin!F 6.0.0d8
!AThunderboltDPOutAdapter 8.1.4
|IOGraphics!F 585.1
|IOAudio!F 300.6.1
@vecLib.kext 1.2.0
usb.cdc.ecm 5.0.0
usb.cdc.ncm 5.0.0
usb.!UHub 1.2
usb.cdc 5.0.0
usb.networking 5.0.0
usb.!UHostCompositeDevice 1.2
!ABSDKextStarter 3
|IOSurface 290.7
!AThunderboltDPInAdapter 8.1.4
!AThunderboltDPAdapter!F 8.1.4
!AThunderboltPCIDownAdapter 4.1.1
!AHPM 3.4.4
!A!ILpssI2C!C 3.0.60
!A!ILpssI2C 3.0.60
!A!ILpssDmac 3.0.60
@filesystems.hfs.encodings.kext 1
!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
!ABCMWLANCoreMac 1.0.0
|IOSerial!F 11
|IO80211!FV2 1200.12.2b1
|IOSkywalk!F 1
IOImageLoader 1.0.0
corecapture 1.0.4
!AThunderboltNHI 7.2.8
|IOThunderbolt!F 9.3.2
!AEthernetAquantiaAqtion 1.0.64
mDNSOffloadUserClient 1.0.1b8
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

I also had this issue twice in 2 hours.
MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports)
Processor: 2.3 GHz Dual-Core Intel Core i5
Memory: 8 GB 2133 MHz LPDDR3
Graphics: Intel Iris Plus Graphics 640 1536 MB

At the time, I haven't had any external peripheral connected.

Code Block 

Code Block 
panic(cpu 0 caller 0xffffff80049eba25): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 158 seconds
service: com.apple.logd, total successful checkins since load (8379 seconds ago): 833, last successful checkin: 22 seconds ago
service: com.apple.WindowServer, total successful checkins since load (8349 seconds ago): 819, last successful checkin: 158 seconds ago
Backtrace (CPU 0), Frame : Return Address
0xffffffb0b10b3670 : 0xffffff800168e02d 
0xffffffb0b10b36c0 : 0xffffff80017d48e3 
0xffffffb0b10b3700 : 0xffffff80017c4eda 
0xffffffb0b10b3750 : 0xffffff8001632a2f 
0xffffffb0b10b3770 : 0xffffff800168d84d 
0xffffffb0b10b3890 : 0xffffff800168db43 
0xffffffb0b10b3900 : 0xffffff8001e9d6f4 
0xffffffb0b10b3970 : 0xffffff80049eba25 
0xffffffb0b10b3980 : 0xffffff80049eb660 
0xffffffb0b10b39a0 : 0xffffff8001e1eede 
0xffffffb0b10b39f0 : 0xffffff80049eaa34 
0xffffffb0b10b3b20 : 0xffffff8001e2911b 
0xffffffb0b10b3c80 : 0xffffff8001780401 
0xffffffb0b10b3d90 : 0xffffff80016936ad 
0xffffffb0b10b3e00 : 0xffffff8001669c85 
0xffffffb0b10b3e60 : 0xffffff80016812a2 
0xffffffb0b10b3ef0 : 0xffffff80017a91fd 
0xffffffb0b10b3fa0 : 0xffffff8001633216 
   Kernel Extensions in backtrace:
     com.apple.driver.watchdog(1.0)[57B278ED-0B7C-3544-9CFE-53963BB1DAF3]@0xffffff80049e9000->0xffffff80049ebfff
Process name corresponding to current thread: watchdogd
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: 0x0000000001400000
KernelCache base: 0xffffff8001600000
Kernel slide:   0x0000000001410000
Kernel text base: 0xffffff8001610000
__HIB text base: 0xffffff8001500000
System model name: MacBookPro14,1 (Mac-B4831CEBD52A0C4C)
System shutdown begun: NO
Panic diags file available: YES (0x0)
Hibernation exit count: 0
System uptime in nanoseconds: 8408583483730
Last Sleep:      absolute      base_tsc     base_nano
 Uptime : 0x000007a5c6a1b586
 Sleep  : 0x0000000000000000 0x0000000000000000 0x0000000000000000
 Wake  : 0x0000000000000000 0x0000000c02662fa4 0x0000000000000000
last started kext at 220969630009: com.box.filesystems.osxfuse	403.11.2 (addr 0xffffff7f9c85e000, size 86016)
loaded kexts:
com.box.filesystems.osxfuse	403.11.2
>AudioAUUC	1.70
@filesystems.autofs	3.0
@fileutil	20.036.15
|IO!BSerialManager	8.0.4d18
>!APlatformEnabler	2.7.0d0
>AGPM	122
>X86PlatformShim	1.0.0
>!AGraphicsDevicePolicy	6.2.9
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Code Block 

I thought I had solved the issue with OneDrive, but NO. I was wrong. It did slow the number of crashes but now it has become more erratic than before. Some things seem to be consistent, though:

• TimeMachine starts failing to back up

• Office365 apps begin to crash (and this is due to problems accessing Profiles)

• Memory hogs say apps should be closed (even though they are not clogging - as seen on Activity Monitor).

• When trying to reboot before it crashes, computer closes all apps but won't reboot - it gets stuck "after" closing the Finder

So you force shut down. When you restart the computer, all your personal logins on browsers are gone, all your Finder Windows are closed (Safari even closes all open windows - and returns to older instances, not the one before restart) and Office apps are able to reopen again. OneDrive may or may not be open.

So something happens in the library since it destroys part of the cache and personal data saved on browser.

this happens to me for months now, went over every update and no fix in sight.
what gives Apple?

Same issue, has anybody been able to fix it?

"com.apple.driver.watchdog"

Same issue, I suspect external monitors. As someone pointed out, no problem with Win 10 in forever. This is my first Mac, I have no delusions about stability, it immediately trashed my exfat RAID. This is the third version of the OS. Apple Support: Did you reboot? Not impressed.

I don't have any solutions, but wanted to say I have the same issue with a 2017 iMac, using two external monitors.

Same issue and crash report. Using 2019 MacBookPro 16,1, Big Sur 11.4. No peripherals attached. Microsoft Edge open but inactive. Running NordVPN and Kaspersky. It just quietly went to sleep and restarted. Kind of zen-like. The reference to userspace watchdog, however, triggered my paranoia.

I have the same issue with BigSure 11.4 (and earlier versions of BigSur).

I installed BigSure fresh on a MacBook Pro (15-inch 2019) 2,3GHz 8-Core Intel Core-9 32GB memory Radeon Pro 560X 4GB

I have an externan Monitor (Dell U3415W) Previously i connected it via HDMI and an adapter but since a month ago I use a Belkin Thunderbolt-3 Dock Pro where the external monitor is connected through DisplayPort. The problem exists before I changed to the docking station but maybe is a little more frequent now.

It is not unusual that it is either Microsoft Outlook or Microsoft Teams that are the app that stop working first but there are others as well. I mostly work with IntelliJ or Visual Code with both Teams and Slack running. Also use Mail and Safari a lot. For anti virus I use Avira (only AntiVirus Pro).

I also get screen freezes from time to time that seems to be shorter than the time out so I usually just wait (frustrating) till it unfreezes and can then continue to work. When I check the Activity Monitor after the freeze the Window Server is usually pretty busy.

Apparently something is bothering the Window Server but the question is what. Before BigSure this happened maybe on or two times per year now its several times per week.

Please Apple, fix this!