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Constant Kernel Panics – userspace watchdog timeout: no successful checkins from com.apple.WindowServer
- Thread starter monstermac77
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Wonder if it’s the same root cause as the other user reporting uninstalling Dropbox would fix it. Reducing system wake will reduce the chance of it panicking.
Do you by chance have anti-virus software installed? Had a similar issue before on Mojave, wonder if it transferred over to Catalina...
Interesting. I was able to reproduce it on a clean install of Catalina with no third party software installed, but I had wondered if some common third party software like Dropbox was to blame (or partly to blame).
Hey all- I'm on a 21.5" late 2015 iMac and also receiving the watchdog timeouts. It's only happened since updating to Catalina 10.15.4 (maybe right before the update too on 10.15.3?). It only happens randomly when playing The Sims 4, I notice a bad lag then my computer restarts with the error. I also received the same error after trying to have a virtual doctor appt today through Microsoft Teams (on chrome, did not download app). Didn't notice a lag but just restarted a bit after loading. Same watchdog error. I just saw some people disabling the Enable Power Nap, so I just did that and I will update on progress!
Hi,
I'm on a MacBook Pro (16-inch, 2019) with Catalina 10.15.4 (19E287). I was getting kernel panics for another reason (https://apple.stackexchange.com/que...e-of-high-kernel-task-cpu-usage/363933#363933) and now I am getting these ones. I may have been getting this before and haven't noticed, thinking they were the other ones.
I've had it even with everything unplugged and laptop asleep when waking it up.
Power Nap disabled, all Accessibility flags disabled too. I've had this connected to the usb-c power cord and also by itself.
I'm on a MacBook Pro (16-inch, 2019) with Catalina 10.15.4 (19E287). I was getting kernel panics for another reason (https://apple.stackexchange.com/que...e-of-high-kernel-task-cpu-usage/363933#363933) and now I am getting these ones. I may have been getting this before and haven't noticed, thinking they were the other ones.
I've had it even with everything unplugged and laptop asleep when waking it up.
Power Nap disabled, all Accessibility flags disabled too. I've had this connected to the usb-c power cord and also by itself.
Just another one here. Completely frozen spinning beach ball (wasn't spinning!) today about 15 minutes into using it and I was just browsing a web page. Seems to happen more at the beginning of a restart or beginning of a day. Yesterday it took me over an hour, maybe two, of futzing with it to get it to work at all.
Running 10.15.4 and it's been MUCH WORSE since I updated from 10.15.3. 2013 MBP (Retina 15)
>panic(cpu 6 caller 0xffffff7f8fbbaa8d): watchdog timeout: no checkins from watchdogd in 93 seconds (8606 total checkins since monitoring last enabled)
Backtrace (CPU 6), Frame : Return Address
I have turned off my DropBox and Google Drive extensions/apps to see if that helps. I tried the NYC video and nothing happened -- maybe I should run it longer?
Running 10.15.4 and it's been MUCH WORSE since I updated from 10.15.3. 2013 MBP (Retina 15)
>panic(cpu 6 caller 0xffffff7f8fbbaa8d): watchdog timeout: no checkins from watchdogd in 93 seconds (8606 total checkins since monitoring last enabled)
Backtrace (CPU 6), Frame : Return Address
I have turned off my DropBox and Google Drive extensions/apps to see if that helps. I tried the NYC video and nothing happened -- maybe I should run it longer?
It's not caused by an App. The Navi graphics drivers and AppleGVA are the issue. Put you machine to sleep, open Safari, play some YouTube video to trigger AppleGVA. Repeating that cycle 20 times should give you a freeze followed by a kernel panic at least once.
I can perfectly reproduce this on my Hackintosh. With Radeon VII it runs perfectly stable for weeks without rebooting. As soon as I use my RX 5700 XT those freezes and kernel panics start to appear randomly after sleep when AppleGVA is fired up. Panic report is identical to the MBP16 reports. This issue has been around since late 2019 when Navi support was initially introduced. Until 10.15.3 the issue appeared with every sleep wake cycle. After 10.15.3 it started to only happen randomly.
I can perfectly reproduce this on my Hackintosh. With Radeon VII it runs perfectly stable for weeks without rebooting. As soon as I use my RX 5700 XT those freezes and kernel panics start to appear randomly after sleep when AppleGVA is fired up. Panic report is identical to the MBP16 reports. This issue has been around since late 2019 when Navi support was initially introduced. Until 10.15.3 the issue appeared with every sleep wake cycle. After 10.15.3 it started to only happen randomly.
I've been experiencing this on a daily basis lately. It seems like it got a lot worse with the 15.4 update, but that could be coincidental. I have a 2019 13" MBP.
panic(cpu 2 caller 0xffffff7f8d1a0a8d): watchdog timeout: no checkins from watchdogd in 95 seconds (5 total checkins since monitoring last enabled)
Backtrace (CPU 2), Frame : Return Address
panic(cpu 2 caller 0xffffff7f8d1a0a8d): watchdog timeout: no checkins from watchdogd in 95 seconds (5 total checkins since monitoring last enabled)
Backtrace (CPU 2), Frame : Return Address
I'm running a T3 with 2 2k monitors - I seem to have the issue somewhat less when I take the T3 out of the loop but I had to buy another display port adapter to make up for the loss of the T3...
I started getting these Panics after an update (can't recall which one) Once they started they just continued. Been happening for about 3-4 weeks.
Updated to Catalina 2 days ago and though it may have fixed the problem, buit ...NOPE! just happened again.
It's even more frustratiing now being that I am working from home and always on a VPN connection.
$6K iMac Pro turned to **** within 2 years
Updated to Catalina 2 days ago and though it may have fixed the problem, buit ...NOPE! just happened again.
It's even more frustratiing now being that I am working from home and always on a VPN connection.
$6K iMac Pro turned to **** within 2 years
I have a Mac Pro 6,1 and have been having this issue since upgrading to Catalina. Based on these forums, it sounds like it's related to having an external display connected (which is challenging for a Mac with no internal display). I found a post in this forum https://discussions.apple.com/thread/250715149?page=20 that says to go to System Preferences > Notifications and turn ON the setting for Turn On Do Not Disturb When the screen is locked (the 3rd checkbox down). I did this and have not had a crash in several days.
I'm using a 2019 13" MBP 16gb ram , 256gb and catalina 10.15.4. I'm getting constant panics every 2 minutes, to the point I can't even use the laptop.
The laptop crashes in safe mode , as well as in recovery mode , and the hardware diagnostics give an all clear. Weird.
My touchbar has stopped working and wont turn on .
Does anyone know what com.apple.dfrd is?
panic(cpu 0 caller 0xfffffff0263e6058): userspace watchdog timeout: no successful checkins from com.apple.dfrd since load
service: com.apple.dfrd, no successful checkins since load (180 seconds ago)
service: com.apple.UserEventAgent-System, total successful checkins since load (180 seconds ago): 19, last successful checkin: 0 seconds ago
service: com.apple.bridgeaudiod, total successful checkins since load (180 seconds ago): 19, last successful checkin: 0 seconds ago
service: com.apple.logd, total successful checkins since load (180 seconds ago): 19, last successful checkin: 0 seconds ago
Debugger message: panic
Memory ID: 0xff
OS version: 17P4281
macOS version: Not set
Kernel version: Darwin Kernel Version 19.4.0: Mon Mar 2 20:38:56 PST 2020; root:xnu-6153.101.6~2/RELEASE_ARM64_T8010
Kernel UUID: 3695E9D9-323E-350E-9A6E-65819BE397D7
iBoot version: iBoot-5540.105.2
secure boot?: YES
x86 EFI Boot State: 0x16
x86 System State: 0x3
x86 Power State: 0x6
x86 Shutdown Cause: 0x5
x86 Previous Power Transitions: 0x60400040506
PCIeUp link state: 0x16892700
Paniclog version: 13
Kernel slide: 0x000000001df74000
Kernel text base: 0xfffffff024f78000
mach_absolute_time: 0x10d050cbd
Epoch Time: sec usec
Boot : 0x5eab7804 0x000b6259
Sleep : 0x00000000 0x00000000
Wake : 0x00000000 0x00000000
Calendar: 0x5eab78bc 0x00093145
Total cpu_usage: 9977551
Thread task pri cpu_usage
0xffffffe00171a4f8 watchdogd 97 0
0xffffffe00171af88 fseventsd 31 0
0xffffffe0018c0a90 watchdogd 31 0
0xffffffe000b6ba18 kernel_task 0 4040242
0xffffffe00086d520 kernel_task 0 2808746
Panicked task 0xffffffe001640800: 221 pages, 3 threads: pid 33: watchdogd
Panicked thread: 0xffffffe00171a4f8, backtrace: 0xffffffe010bcb000, tid: 749
lr: 0xfffffff02583c764 fp: 0xffffffe010bcb040
lr: 0xfffffff02583c5c0 fp: 0xffffffe010bcb0b0
lr: 0xfffffff025956e7c fp: 0xffffffe010bcb160
lr: 0xfffffff025e0562c fp: 0xffffffe010bcb170
lr: 0xfffffff02583bf28 fp: 0xffffffe010bcb4e0
lr: 0xfffffff02583c280 fp: 0xffffffe010bcb530
lr: 0xfffffff026672934 fp: 0xffffffe010bcb550
lr: 0xfffffff0263e6058 fp: 0xffffffe010bcb570
lr: 0xfffffff0263e5d94 fp: 0xffffffe010bcb590
lr: 0xfffffff025d99fc0 fp: 0xffffffe010bcb5f0
lr: 0xfffffff0263e52e8 fp: 0xffffffe010bcb6d0
lr: 0xfffffff025da300c fp: 0xffffffe010bcb860
lr: 0xfffffff0259268d0 fp: 0xffffffe010bcb980
lr: 0xfffffff025841f24 fp: 0xffffffe010bcb9e0
lr: 0xfffffff025817cf0 fp: 0xffffffe010bcba60
lr: 0xfffffff02582fc7c fp: 0xffffffe010bcbb10
lr: 0xfffffff02594d760 fp: 0xffffffe010bcbbd0
lr: 0xfffffff025956fd4 fp: 0xffffffe010bcbc80
lr: 0xfffffff025e0562c fp: 0xffffffe010bcbc90
lr: 0x00000001a04ff198 fp: 0x0000000000000000
The laptop crashes in safe mode , as well as in recovery mode , and the hardware diagnostics give an all clear. Weird.
My touchbar has stopped working and wont turn on .
Does anyone know what com.apple.dfrd is?
panic(cpu 0 caller 0xfffffff0263e6058): userspace watchdog timeout: no successful checkins from com.apple.dfrd since load
service: com.apple.dfrd, no successful checkins since load (180 seconds ago)
service: com.apple.UserEventAgent-System, total successful checkins since load (180 seconds ago): 19, last successful checkin: 0 seconds ago
service: com.apple.bridgeaudiod, total successful checkins since load (180 seconds ago): 19, last successful checkin: 0 seconds ago
service: com.apple.logd, total successful checkins since load (180 seconds ago): 19, last successful checkin: 0 seconds ago
Debugger message: panic
Memory ID: 0xff
OS version: 17P4281
macOS version: Not set
Kernel version: Darwin Kernel Version 19.4.0: Mon Mar 2 20:38:56 PST 2020; root:xnu-6153.101.6~2/RELEASE_ARM64_T8010
Kernel UUID: 3695E9D9-323E-350E-9A6E-65819BE397D7
iBoot version: iBoot-5540.105.2
secure boot?: YES
x86 EFI Boot State: 0x16
x86 System State: 0x3
x86 Power State: 0x6
x86 Shutdown Cause: 0x5
x86 Previous Power Transitions: 0x60400040506
PCIeUp link state: 0x16892700
Paniclog version: 13
Kernel slide: 0x000000001df74000
Kernel text base: 0xfffffff024f78000
mach_absolute_time: 0x10d050cbd
Epoch Time: sec usec
Boot : 0x5eab7804 0x000b6259
Sleep : 0x00000000 0x00000000
Wake : 0x00000000 0x00000000
Calendar: 0x5eab78bc 0x00093145
Total cpu_usage: 9977551
Thread task pri cpu_usage
0xffffffe00171a4f8 watchdogd 97 0
0xffffffe00171af88 fseventsd 31 0
0xffffffe0018c0a90 watchdogd 31 0
0xffffffe000b6ba18 kernel_task 0 4040242
0xffffffe00086d520 kernel_task 0 2808746
Panicked task 0xffffffe001640800: 221 pages, 3 threads: pid 33: watchdogd
Panicked thread: 0xffffffe00171a4f8, backtrace: 0xffffffe010bcb000, tid: 749
lr: 0xfffffff02583c764 fp: 0xffffffe010bcb040
lr: 0xfffffff02583c5c0 fp: 0xffffffe010bcb0b0
lr: 0xfffffff025956e7c fp: 0xffffffe010bcb160
lr: 0xfffffff025e0562c fp: 0xffffffe010bcb170
lr: 0xfffffff02583bf28 fp: 0xffffffe010bcb4e0
lr: 0xfffffff02583c280 fp: 0xffffffe010bcb530
lr: 0xfffffff026672934 fp: 0xffffffe010bcb550
lr: 0xfffffff0263e6058 fp: 0xffffffe010bcb570
lr: 0xfffffff0263e5d94 fp: 0xffffffe010bcb590
lr: 0xfffffff025d99fc0 fp: 0xffffffe010bcb5f0
lr: 0xfffffff0263e52e8 fp: 0xffffffe010bcb6d0
lr: 0xfffffff025da300c fp: 0xffffffe010bcb860
lr: 0xfffffff0259268d0 fp: 0xffffffe010bcb980
lr: 0xfffffff025841f24 fp: 0xffffffe010bcb9e0
lr: 0xfffffff025817cf0 fp: 0xffffffe010bcba60
lr: 0xfffffff02582fc7c fp: 0xffffffe010bcbb10
lr: 0xfffffff02594d760 fp: 0xffffffe010bcbbd0
lr: 0xfffffff025956fd4 fp: 0xffffffe010bcbc80
lr: 0xfffffff025e0562c fp: 0xffffffe010bcbc90
lr: 0x00000001a04ff198 fp: 0x0000000000000000
Last edited:
This is beyond ridiculous!
Is Apple simply discarding those crash reports and put itself/herself/himself in sleep mode? Is that possible?
Or could it be that the problem is so severe that its developers don’t know yet how to deal with these numerous crash problems that appear to concern so many of us?
For the benefit of French people, here is a screenshot of my setting to partially alleviate the problem (for instance, when coming out from sleep mode). Still, from time to time, starting up the system in the morning will bring that problem again.
![screenshot-mac-21.png]( "screenshot-mac-21.png")
Please note that the setting “Empêcher la suspension d’activité…” (“Prevent computer from sleeping…”) has been checked. But problems will remain…
If that could be relevant, my system is an iMac (Retina 4K, 21.5-inch, 2017) with Catalina 10.15.4 (19E287).
Is Apple simply discarding those crash reports and put itself/herself/himself in sleep mode? Is that possible?
Or could it be that the problem is so severe that its developers don’t know yet how to deal with these numerous crash problems that appear to concern so many of us?
For the benefit of French people, here is a screenshot of my setting to partially alleviate the problem (for instance, when coming out from sleep mode). Still, from time to time, starting up the system in the morning will bring that problem again.
Please note that the setting “Empêcher la suspension d’activité…” (“Prevent computer from sleeping…”) has been checked. But problems will remain…
If that could be relevant, my system is an iMac (Retina 4K, 21.5-inch, 2017) with Catalina 10.15.4 (19E287).
I have been experiencing this crash ever since I installed MacOS 10.15.4 on my 16-inch MBP. My wife has an older MBP running MacOS 10.15.4 and she has had zero issues. I did a fresh MacOS install on my MBP and this is still happening without me installing any third party software. Therefore it CANNOT be caused by third party things like Dropbox etc. My MBP restarts ~10 times daily.
It seems to be more common when my MBP is plugged into an external hub, but still happens even when it's not. I have been sending reports to Apple now for one month!!!
This is ridiculous. It's seriously making me consider switching back to Windows, which I left 12 years ago.
It seems to be more common when my MBP is plugged into an external hub, but still happens even when it's not. I have been sending reports to Apple now for one month!!!
This is ridiculous. It's seriously making me consider switching back to Windows, which I left 12 years ago.
I hear yah... I just sold my late 2013 mac pro that has this issue. My other macs (mac mini & macbook air) doesn't have the issue.
Hi guys,
Here one with MacBook Pro Retina 2012.
I have the same issue (reboot by watchdogd) and used the disabling power nap solution. Today, Xcode finished the Archive process without the reboot issue. I will see next attempts...
![Screenshot 2020-05-01 at 21.04.55.png]( "Screenshot 2020-05-01 at 21.04.55.png")
The issue is raised when the computer is compiling using Xcode and screen shuts down due inactivity. Then it reboots itself or when I touched the keyboard or mouse.
I'm planning soon to acquire a MacBook Pro 16" and I'm afraid to go worst with it
Here one with MacBook Pro Retina 2012.
I have the same issue (reboot by watchdogd) and used the disabling power nap solution. Today, Xcode finished the Archive process without the reboot issue. I will see next attempts...
The issue is raised when the computer is compiling using Xcode and screen shuts down due inactivity. Then it reboots itself or when I touched the keyboard or mouse.
Code:
panic(cpu 4 caller 0xffffff7facc49a8d): watchdog timeout: no checkins from watchdogd in 93 seconds (122 total checkins since monitoring last enabled)
Backtrace (CPU 4), Frame : Return Address
0xffffff812fa13c40 : 0xffffff802b9215cd
0xffffff812fa13c90 : 0xffffff802ba5a3c5
0xffffff812fa13cd0 : 0xffffff802ba4bf7e
0xffffff812fa13d20 : 0xffffff802b8c7a40
0xffffff812fa13d40 : 0xffffff802b920c97
0xffffff812fa13e40 : 0xffffff802b921087
0xffffff812fa13e90 : 0xffffff802c0c2ce8
0xffffff812fa13f00 : 0xffffff7facc49a8d
0xffffff812fa13f10 : 0xffffff7facc4947b
0xffffff812fa13f50 : 0xffffff7facc5ed9c
0xffffff812fa13fa0 : 0xffffff802b8c713e
Kernel Extensions in backtrace:
com.apple.driver.watchdog(1.0)[99A75EFF-7734-31A0-80BF-FF8288E30D9B]@0xffffff7facc48000->0xffffff7facc50fff
com.apple.driver.AppleSMC(3.1.9)[601E041E-0A5C-3B6A-A4E6-45ECC7F48A2B]@0xffffff7facc51000->0xffffff7facc6ffff
dependency: com.apple.iokit.IOACPIFamily(1.4)[9D1FF279-C4A2-3344-902F-E0B22B508689]@0xffffff7facc3f000
dependency: com.apple.driver.watchdog(1)[99A75EFF-7734-31A0-80BF-FF8288E30D9B]@0xffffff7facc48000
dependency: com.apple.iokit.IOPCIFamily(2.9)[1B1F3BBB-9212-3CF9-94F8-8FEF0D3ACEC4]@0xffffff7fac265000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
19E287
Kernel version:
Darwin Kernel Version 19.4.0: Wed Mar 4 22:28:40 PST 2020; root:xnu-6153.101.6~15/RELEASE_X86_64
Kernel UUID: AB0AA7EE-3D03-3C21-91AD-5719D79D7AF6
Kernel slide: 0x000000002b600000
Kernel text base: 0xffffff802b800000
__HIB text base: 0xffffff802b700000
System model name: MacBookPro10,1 (Mac-C3EC7CD22292981F)
System shutdown begun: NO
Panic diags file available: YES (0x0)
System uptime in nanoseconds: 1331091297299
last loaded kext at 27386357946: org.virtualbox.kext.VBoxNetAdp 6.0.14 (addr 0xffffff7faf77a000, size 28672)
last unloaded kext at 211006456300: >usb.!UHostPacketFilter 1.0 (addr 0xffffff7fad12d000, size 24576)
loaded kexts:
org.virtualbox.kext.VBoxNetAdp 6.0.14
org.virtualbox.kext.VBoxNetFlt 6.0.14
com.avast.PacketForwarder 2.1
org.virtualbox.kext.VBoxUSB 6.0.14
com.avast.FileShield 4.0.0
com.intel.kext.intelhaxm 6.0.5
org.virtualbox.kext.VBoxDrv 6.0.14
com.paragon-software.filesystems.ntfs 106.5.15
com.intel.driver.EnergyDriver 3.7.0
@fileutil 20.036.15
>AGPM 111.4.4
>!APlatformEnabler 2.7.0d0
>X86PlatformShim 1.0.0
@filesystems.autofs 3.0
>!AMikeyHIDDriver 131
>!AMikeyDriver 283.15
>!AHDA 283.15
@AGDCPluginDisplayMetrics 5.1.16
>!AHV 1
|IOUserEthernet 1.0.1
>!AUpstreamUserClient 3.6.8
|IO!BSerialManager 7.0.4f6
>pmtelemetry 1
@Dont_Steal_Mac_OS_X 7.0.0
@GeForce 14.0.0
>!AMuxControl 5.1.16
>!A!IHD4000Graphics 14.0.5
>!A!ISlowAdaptiveClocking 4.0.0
>!AThunderboltIP 3.1.4
>eficheck 1
>!ASMCPDRC 1.0.0
>!ALPC 3.1
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>!A!IFramebufferCapri 14.0.5
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>AudioAUUC 1.70
>!UTCKeyboard 255
>!UTCButtons 255
>!AVirtIO 1.0
@filesystems.hfs.kext 522.100.5
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
@BootCache 40
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
@filesystems.apfs 1412.101.1
@private.KextAudit 1.0
>!ASDXC 1.7.7
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>!ARTC 2.0
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>!ASMBIOS 2.1
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$!AImage4 1
@nke.applicationfirewall 303
$TMSafetyNet 8
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>!A!ICPUPowerManagement 222.0.0
|EndpointSecurity 1
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>!AHIDKeyboard 209
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>!ASMBus!C 1.0.18d1
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@plugin.IOgPTPPlugin 840.3
|Broadcom!BHost!CUSBTransport 7.0.4f6
|IO!BHost!CUSBTransport 7.0.4f6
|IO!BHost!CTransport 7.0.4f6
|IO!B!F 7.0.4f6
|IO!BPacketLogger 7.0.4f6
>!UMultitouch 264
>usb.IOUSBHostHIDDevice 1.2
>!UAudio 322.2
>usb.networking 5.0.0
>usb.!UHostCompositeDevice 1.2
>usb.!UHub 1.2
|IOAudio!F 300.2
@vecLib.kext 1.2.0
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@filesystems.hfs.encodings.kext 1
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>!AThunderboltDPInAdapter 6.2.6
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>!AEFINVRAM 2.1
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$quarantine 4
$sandbox 300.0
@kext.!AMatch 1.0.0d1
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>!UHostMergeProperties 1.2
>usb.!UCommon 1.0
>!ABusPower!C 1.0
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>!AMobileFileIntegrity 1.0.5
@kext.CoreTrust 1
|IOTimeSync!F 840.3
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>!AACPIPlatform 6.1
>!ASMC 3.1.9
>watchdog 1
|IOPCI!F 2.9
|IOACPI!F 1.4
@kec.pthread 1
@kec.Libm 1
@kec.corecrypto 1.0I'm planning soon to acquire a MacBook Pro 16" and I'm afraid to go worst with it
Just to add to the picture...
Late 2012 MacMini. Started doing the random restarts or not coming back from sleep since 10.15.4 Supplemental update (19E287). No fancy GPU needed here. And of course it's always an external monitor .
After reading this looking to drop back to at least 10.15.4 non-supplemental or 10.15.3, which seemed perfectly stable on my setup. Have been trying all the sleep related power settings for fun without success.
Late 2012 MacMini. Started doing the random restarts or not coming back from sleep since 10.15.4 Supplemental update (19E287). No fancy GPU needed here. And of course it's always an external monitor
.After reading this looking to drop back to at least 10.15.4 non-supplemental or 10.15.3, which seemed perfectly stable on my setup. Have been trying all the sleep related power settings for fun without success.
Looks like AppleGVA itself can now cause those freezes and panics in combination with several GPUs on the latest Catalina releases. But Navi GPUs definitely are one of the GPU architectures that are guaranteed to trigger this issue. But whatever it is, it's beyond hilarious Apple doesn't manage to fix it (along with many other issues and bugs they just ignore). Again: Bug reports regarding this specific issue have been submitted to Apple ever since they first introduced Navi GPU support in a beta back in late 2019.
I have myself submitted a bug report on this crash over hundred times. I assume other users have done something similar. It is so disappointing Apple has not managed/bothered to deal with this.
I had a similar panic today on my 2013 Mac Pro with Catalina 10.15.5 beta 3. I made the setting change suggested by Schmov17 in post #215 and I haven't had the issue again yet (knock on wood). I tried to reproduce it using the steps in the first post and it's good so far. The video is playing in loop in the background.
Code:
panic(cpu 2 caller 0xffffff7f9dc4fad5): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds
service: com.apple.logd, total successful checkins since wake (410 seconds ago): 42, last successful checkin: 0 seconds ago
service: com.apple.WindowServer, total successful checkins since wake (410 seconds ago): 30, last successful checkin: 120 seconds ago
Backtrace (CPU 2), Frame : Return Address
0xffffff8dc4f2b720 : 0xffffff801cb1e6dd
0xffffff8dc4f2b770 : 0xffffff801cc57c25
0xffffff8dc4f2b7b0 : 0xffffff801cc497de
0xffffff8dc4f2b800 : 0xffffff801cac4a40
0xffffff8dc4f2b820 : 0xffffff801cb1dda7
0xffffff8dc4f2b920 : 0xffffff801cb1e197
0xffffff8dc4f2b970 : 0xffffff801d2c14c8
0xffffff8dc4f2b9e0 : 0xffffff7f9dc4fad5
0xffffff8dc4f2b9f0 : 0xffffff7f9dc4f7fa
0xffffff8dc4f2ba10 : 0xffffff801d25371e
0xffffff8dc4f2ba60 : 0xffffff7f9dc4ecfe
0xffffff8dc4f2bb60 : 0xffffff801d25c943
0xffffff8dc4f2bca0 : 0xffffff801cc07412
0xffffff8dc4f2bdb0 : 0xffffff801cb24438
0xffffff8dc4f2be10 : 0xffffff801cafacc5
0xffffff8dc4f2be70 : 0xffffff801cb11bb2
0xffffff8dc4f2bf00 : 0xffffff801cc2fe65
0xffffff8dc4f2bfa0 : 0xffffff801cac5226
Kernel Extensions in backtrace:
com.apple.driver.watchdog(1.0)[87C6D09A-72A7-3CEE-94F5-B8395E420958]@0xffffff7f9dc4e000->0xffffff7f9dc56fff
BSD process name corresponding to current thread: watchdogd
Mac OS version:
19F72f
Kernel version:
Darwin Kernel Version 19.5.0: Sun Apr 19 22:51:38 PDT 2020; root:xnu-6153.120.31~14/RELEASE_X86_64
Kernel UUID: FFC5BCD5-8D44-32EE-8F36-A2B8372C434C
Kernel slide: 0x000000001c800000
Kernel text base: 0xffffff801ca00000
__HIB text base: 0xffffff801c900000
System model name: MacPro6,1 (Mac-F60DEB81FF30ACF6)
System shutdown begun: NO
Panic diags file available: YES (0x0)
System uptime in nanoseconds: 17982265015431
last loaded kext at 15081836216599: >!AXsanScheme 3 (addr 0xffffff7fa11cd000, size 32768)
last unloaded kext at 15214823240724: >!AXsanScheme 3 (addr 0xffffff7fa11cd000, size 32768)
loaded kexts:
@nke.rvi 2.0.0
@fileutil 20.036.15
>AudioAUUC 1.70
>AGPM 111.4.4
>!APlatformEnabler 2.7.0d0
>X86PlatformShim 1.0.0
@filesystems.autofs 3.0
>!AUpstreamUserClient 3.6.8
>!AMCCSControl 1.14
@kext.AMDFramebuffer 3.0.9
@kext.AMDRadeonX4000 3.0.9
>!AHDA 283.15
@kext.AMDRadeonServiceManager 3.0.9
>!AGraphicsDevicePolicy 5.2.4
@AGDCPluginDisplayMetrics 5.2.4
>!AHV 1
|IOUserEthernet 1.0.1
|IO!BSerialManager 7.0.5f3
>eficheck 1
>pmtelemetry 1
@Dont_Steal_Mac_OS_X 7.0.0
>!AMGPUPowerControl 5.2.4
>!ALPC 3.1
>!AThunderboltIP 3.1.4
@kext.AMD7000!C 3.0.9
>!A!IMCEReporter 115
>!A!ISlowAdaptiveClocking 4.0.0
>!AVirtIO 1.0
@filesystems.hfs.kext 522.100.5
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
@BootCache 40
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
@filesystems.apfs 1412.120.1
@private.KextAudit 1.0
>AirPort.BrcmNIC 1400.1.1
>!AAHCIPort 341.0.2
|!ABCM5701Ethernet 10.3.5
>!AACPIButtons 6.1
>!AACPIEC 6.1
>!ARTC 2.0
>!AHPET 1.8
>!ASMBIOS 2.1
>!AAPIC 1.7
>!A!ICPUPowerManagementClient 222.0.0
$!AImage4 1
@nke.applicationfirewall 303
$TMSafetyNet 8
@!ASystemPolicy 2.0.0
>!A!ICPUPowerManagement 222.0.0
|EndpointSecurity 1
>!AHIDKeyboard 209
@kext.triggers 1.0
>!ASMBus!C 1.0.18d1
@kext.AMDRadeonX4030HWLibs 1.0
|IOAccelerator!F2 438.5.3
@kext.AMDRadeonX4000HWServices 3.0.9
>DspFuncLib 283.15
@kext.OSvKernDSPLib 529
|IOAVB!F 850.1
>!ASSE 1.0
>X86PlatformPlugin 1.0.0
>!ABacklightExpert 1.1.0
|IONDRVSupport 576.1
>!AGraphicsControl 5.2.4
@!AGPUWrangler 5.2.4
>IOPlatformPlugin!F 6.0.0d8
@kext.AMDSupport 3.0.9
@!AGraphicsDeviceControl 5.2.4
|IOSlowAdaptiveClocking!F 1.0.0
>!AHDA!C 283.15
|IOGraphics!F 576.1
|IOHDA!F 283.15
@plugin.IOgPTPPlugin 840.3
|Broadcom!BHost!CUSBTransport 7.0.5f3
|IO!BHost!CUSBTransport 7.0.5f3
|IO!BHost!CTransport 7.0.5f3
|IO!B!F 7.0.5f3
|IO!BPacketLogger 7.0.5f3
>usb.networking 5.0.0
>usb.!UHostCompositeDevice 1.2
>usb.!UHub 1.2
>!AThunderboltDPInAdapter 6.2.6
>!AThunderboltDPAdapter!F 6.2.6
>!AThunderboltPCIDownAdapter 2.5.4
|IOAudio!F 300.2
@vecLib.kext 1.2.0
|IOSerial!F 11
|IOSurface 269.11
@filesystems.hfs.encodings.kext 1
|IOAHCIBlock!S 316.100.5
>!AThunderboltNHI 5.8.6
|IOThunderbolt!F 7.6.1
|IO80211!F 1200.12.2b1
>corecapture 1.0.4
|IOSkywalk!F 1
>usb.!UEHCIPCI 1.2
>usb.!UEHCI 1.2
|IOAHCI!F 290.0.1
|IOEthernetAVB!C 1.1.0
>mDNSOffloadUserClient 1.0.1b8
>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
$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 157.120.3
|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
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