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Panic - Watchdog Timeout: no checkins from watchdogd in 185 seconds

Most of the time I reboot my MBP 15-inch Mid 2014 with macOS Catalina 10.15.3 I get this... I tried PRAM and SCM reset but it comes back.


panic(cpu 2 caller 0xffffff7f88f3aaae): watchdog timeout: no checkins from watchdogd in 185 seconds (719 totalcheckins since monitoring last enabled), shutdown in progress

Backtrace (CPU 2), Frame : Return Address

0xffffff81e6debc40 : 0xffffff8007b3bb2b

0xffffff81e6debc90 : 0xffffff8007c734d5

0xffffff81e6debcd0 : 0xffffff8007c64f4e

0xffffff81e6debd20 : 0xffffff8007ae2a40

0xffffff81e6debd40 : 0xffffff8007b3b217

0xffffff81e6debe40 : 0xffffff8007b3b5fb

0xffffff81e6debe90 : 0xffffff80082d2b25

0xffffff81e6debf00 : 0xffffff7f88f3aaae

0xffffff81e6debf10 : 0xffffff7f88f3a472

0xffffff81e6debf50 : 0xffffff7f88f4fe76

0xffffff81e6debfa0 : 0xffffff8007ae213e

Kernel Extensions in backtrace:

com.apple.driver.watchdog(1.0)[053A5D15-51D4-3E61-978B-EB435FA4BD0A]@0xffffff7f88f39000->0xffffff7f88f41fff

com.apple.driver.AppleSMC(3.1.9)[8D698096-1F90-3679-8151-22A7665ED287]@0xffffff7f88f42000->0xffffff7f88f60fff

dependency: com.apple.iokit.IOACPIFamily(1.4)[3D78401B-5D2D-33BC-9E41-DD2164EA874D]@0xffffff7f88f30000

dependency: com.apple.driver.watchdog(1)[053A5D15-51D4-3E61-978B-EB435FA4BD0A]@0xffffff7f88f39000

dependency: com.apple.iokit.IOPCIFamily(2.9)[ADD485B5-3EF8-37C4-B3C5-F86326E497A4]@0xffffff7f88651000


BSD process name corresponding to current thread: kernel_task


Mac OS version:

19D76


Kernel version:

Darwin Kernel Version 19.3.0: Thu Jan 9 20:58:23 PST 2020; root:xnu-6153.81.5~1/RELEASE_X86_64

Kernel UUID: A8DDE75C-CD97-3C37-B35D-1070CC50D2CE

Kernel slide: 0x0000000007800000

Kernel text base: 0xffffff8007a00000

__HIB text base: 0xffffff8007900000

System model name: MacBookPro11,2 (Mac-3CBD00234E554E41)

System shutdown begun: YES

Panic diags file available: YES (0x0)

Posted on Apr 1, 2020 2:34 AM

Reply
Question marked as Apple recommended

Backup.

Go to https://support.apple.com/downloads/macos and look for 10.15.4 COMBO update.

Download and run it.


Also some types of External monitors still cause kernel panics.

Posted on Apr 1, 2020 5:31 AM

1 reply
Question marked as Helpful

Jun 26, 2020 1:03 PM in response to rosbif78

rosbif78 wrote:
I have a permanently connected USB hard drive for regular Time Machine backups. I also use an external screen.

Are there any tests that I could perform to help you, either before or after installing the COMBO update?

At this point in time I'm just trying to see if I can collect information that will point to a common cause.


But so far I have user environments all over the map, and nothing seems to be common.

I have system with no external devices, and no 3rd party kernel extensions. Those are the most baffling.


So I'm wondering if WatchDog timeout is a side effect of some other kernel change where the right kind of system load, causes the code responsible to telling the WatchDog timer to reset is not getting around to do the reset in a timely manor.


But it does not seem to be any specific identifiable subsystem. At first I was thinking USB bus, but when I started asking around, I found users with no external devices. Just the power cord.


However, a different use that ONLY have the watchdog timeout when using a specific USB device.


I wondered about IPv6, and I've asked some users if they would change System Preferences -> Network -> Select network interface in the left column -> Advanced -> Configure IPv6 -> "Link-local only" (that is change it away from "Automatic", and see if that helps. The theory being that everyone has a different home router, with different levels of firmware patching, and it is possible that the Catalina IPv6 stack does not like the response from a specific IPv6 implementation it has found on a home router.


And then there is the theory that 3rd party Bluetooth devices having a variety of different Bluetooth chips, with different qualities of Bluetooth implementations, which is yet another networking standard, and if I'm going to wonder about IPv6, it is only fair to wonder about Bluetooth (or at least non-Apple devices, as I'm sure Apple has been using Apple Bluetooth devices all over the place in-house).


But at the moment I have theories (LOUSY Theories), but nothing I can hang my hat on.


I'm as frustrated as the uses getting the watchdog timeouts.

96 replies

May 13, 2020 12:51 PM in response to LD150

Hi Peter,


Does your solution also work for my Mac mini 2018 (3,2 GHz 6-Core Intel Core i7, 32GB RAM, 1TB SSD) version 10.15.4 (19E287)? It also has this error every time it shuts down after a running for few hours. What happens is that my user session is logged off, my screen goes black but the light on my Mac mini stays on. After about 5 minutes, it reboots itself. When I login, the shutdown goes normal. This was always the case with my Mac.


I tried resetting PRAM, SMC, Save boot (which also clears caches), a clean install of Catalina and manually copying back my files (not a restore from Time Machine). Still the same error every time I shutdown my Mac after a few hours uptime.


I called Apple support twice but they do not have any solution other than to send it in for repair. I do have Apple Care but to me, this seems an OS related issue. Not a hardware one.


Thank you in advance for your help!


Dennis

The Netherlands


panic(cpu 2 caller 0xffffff7f8eba0aae): watchdog timeout: no checkins from watchdogd in 310 seconds (128 totalcheckins since monitoring last enabled), shutdown in progress

Backtrace (CPU 2), Frame : Return Address

0xffffff83b59bbc40 : 0xffffff800e1215cd

0xffffff83b59bbc90 : 0xffffff800e25a3c5

0xffffff83b59bbcd0 : 0xffffff800e24bf7e

0xffffff83b59bbd20 : 0xffffff800e0c7a40

0xffffff83b59bbd40 : 0xffffff800e120c97

0xffffff83b59bbe40 : 0xffffff800e121087

0xffffff83b59bbe90 : 0xffffff800e8c2ce8

0xffffff83b59bbf00 : 0xffffff7f8eba0aae

0xffffff83b59bbf10 : 0xffffff7f8eba0486

0xffffff83b59bbf50 : 0xffffff7f8ebb5d9c

0xffffff83b59bbfa0 : 0xffffff800e0c713e

Kernel Extensions in backtrace:

com.apple.driver.watchdog(1.0)[99A75EFF-7734-31A0-80BF-FF8288E30D9B]@0xffffff7f8eb9f000->0xffffff7f8eba7fff

com.apple.driver.AppleSMC(3.1.9)[601E041E-0A5C-3B6A-A4E6-45ECC7F48A2B]@0xffffff7f8eba8000->0xffffff7f8ebc6fff

dependency: com.apple.driver.watchdog(1)[99A75EFF-7734-31A0-80BF-FF8288E30D9B]@0xffffff7f8eb9f000

dependency: com.apple.iokit.IOACPIFamily(1.4)[9D1FF279-C4A2-3344-902F-E0B22B508689]@0xffffff7f8eb08000

dependency: com.apple.iokit.IOPCIFamily(2.9)[1B1F3BBB-9212-3CF9-94F8-8FEF0D3ACEC4]@0xffffff7f8eb11000

May 13, 2020 2:14 PM in response to iDeMi

It is a good way of installing incremental updates for any Mac that may have had a corrupt update process. It cannot do any harm and it may do good along with an occasional Safe Boot and resetting SMC and NVRAM

If the problem is incompatible apps or hardware it will probably not help.


Also remove all antivirus and cleaner apps.


If it was me I would revert to Mojave from the last TM backup in Mojave

May 24, 2020 6:09 AM in response to isa56k

I've been getting the same panic every few days too. I'm on an iMac (27-inch, Late 2012) (no external display) and 10.15.2


I've managed to keep the panic to every few days by running:


caffeinate -u -d -s


I tried leaving out the '-d' so that the display could sleep, after this had stopped it panicking for three days, but it panicked again a day later, so I put it back.


For what it's worth, I've attached my most recent panic log:


Jun 20, 2020 4:47 AM in response to George Colpitts

Well, it really shouldn’t have worked, because a normal update should work. However, I have done this, and I have now not had a panic for some weeks, when they were happening every day:


Go to https://support.apple.com/downloads/macos and look for 10.15.4 COMBO update.


so, before you take your machine to be repaired, try the update with the COMBO, and it really might work.


This must mean that there’s a subtle error in the standard update process.


let’s hope Apple is reading this and fixes it.

Jun 21, 2020 3:08 PM in response to isa56k

Were you by any chance also running Time Machine backup?


Someone at work thinks Time Machine maybe a common trigger for some users. I'm just trying to gather any supporting evidence, or refute the claim so time is not wasted looking explicitly at Time Machine, but maybe on the conditions running Time Machine creates, and then see if there are other apps that create similar conditions.


Someone else found the panics went away after removing a USB dongle for wireless mouse, so it is also possible that Time Machine was talking to a USB disk, and it is the USB device that is the common item.


Anyway, I would be interested in what information you can pass along.

Jun 26, 2020 1:59 AM in response to BobHarris

I too have been having frequent panics on my MacBook Pro 16" 2019 so I am currently downloading the COMBO 10.15.5 to see whether that solves the problem.


I have a permanently connected USB hard drive for regular Time Machine backups. I also use an external screen.


Are there any tests that I could perform to help you, either before or after installing the COMBO update?


panic(cpu 10 caller 0xffffff7f94cf9ad5): userspace watchdog timeout: no

successful checkins from com.apple.WindowServer in 120 seconds


service: com.apple.logd, total successful checkins since load (50251

seconds ago): 5026, last successful checkin: 0 seconds ago


service: com.apple.WindowServer, total successful checkins since load

(50220 seconds ago): 4997, last successful checkin: 120 seconds ago

Question marked as Helpful

Jun 26, 2020 1:03 PM in response to rosbif78

rosbif78 wrote:
I have a permanently connected USB hard drive for regular Time Machine backups. I also use an external screen.

Are there any tests that I could perform to help you, either before or after installing the COMBO update?

At this point in time I'm just trying to see if I can collect information that will point to a common cause.


But so far I have user environments all over the map, and nothing seems to be common.

I have system with no external devices, and no 3rd party kernel extensions. Those are the most baffling.


So I'm wondering if WatchDog timeout is a side effect of some other kernel change where the right kind of system load, causes the code responsible to telling the WatchDog timer to reset is not getting around to do the reset in a timely manor.


But it does not seem to be any specific identifiable subsystem. At first I was thinking USB bus, but when I started asking around, I found users with no external devices. Just the power cord.


However, a different use that ONLY have the watchdog timeout when using a specific USB device.


I wondered about IPv6, and I've asked some users if they would change System Preferences -> Network -> Select network interface in the left column -> Advanced -> Configure IPv6 -> "Link-local only" (that is change it away from "Automatic", and see if that helps. The theory being that everyone has a different home router, with different levels of firmware patching, and it is possible that the Catalina IPv6 stack does not like the response from a specific IPv6 implementation it has found on a home router.


And then there is the theory that 3rd party Bluetooth devices having a variety of different Bluetooth chips, with different qualities of Bluetooth implementations, which is yet another networking standard, and if I'm going to wonder about IPv6, it is only fair to wonder about Bluetooth (or at least non-Apple devices, as I'm sure Apple has been using Apple Bluetooth devices all over the place in-house).


But at the moment I have theories (LOUSY Theories), but nothing I can hang my hat on.


I'm as frustrated as the uses getting the watchdog timeouts.

Jul 16, 2020 10:23 PM in response to BobHarris

Bob, I came across this thread in search of a solution to this problem, which started to occur on my iMac 2017 since I installed the MacOS 10.15.6 update about 24 hours before. I didn't have the problem previously, but now it occured twice within 24 hours.


I also have a permanently connected external UBS drive that I use for TimeMachine backups. I had issues with that external drive when I upgraded to Catalina a few weeks ago as I had to disable sleep mode for hard disks to avoid the drive being constantly dismounted.


Not sure that helps in regard of "sharpening" your theory.

Panic - Watchdog Timeout: no checkins from watchdogd in 185 seconds

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