Catalina 10.15.6 keeps crashing

I have a problem. I updated to macOS 10.15.6 and now my system keeps crashing when I leave my computer for some time. Here is the crash report (some data removed for privacy concerns)


panic(cpu 2 caller ): userspace watchdog timeout: remoted connection watchdog expired, no updates from remoted monitoring thread in 69 seconds, 2219 checkins from thread since monitoring enabled 44430 seconds ago after loadservice: com.apple.logd, total successful checkins since load (44430 seconds ago): 4443, last successful checkin: 10 seconds ago
service: com.apple.WindowServer, total successful checkins since load (44400 seconds ago): 4431, last successful checkin: 10 seconds ago

Backtrace (CPU 2), Frame : Return Address
......
      Kernel Extensions in backtrace:
         com.apple.driver.watchdog(1.0)

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

Mac OS version:
19G73

Kernel version:
Darwin Kernel Version 19.6.0: Sun Jul  5 00:43:10 PDT 2020; root:xnu-6153.141.1~9/RELEASE_X86_64


Any idea what I can do? Please help, my system is unusable. I cannot restore my workspace every few hours when I leave my computer unattended.

MacBook Pro Retina

Posted on Jul 21, 2020 3:08 PM

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Question marked as Top-ranking reply

Posted on Aug 11, 2020 2:51 PM

Ok what worked for me to fix it is by reinstalling the operating system. I also deleted parallels desktop because i read some things about vm software messing up this update, but basically i just followed this link https://support.apple.com/kb/HT204904

With these being the more direct instructions

1 Restart your Mac and immediately press and hold these keys: option, Command (⌘) and R. 

2 Release the keys when you see an Apple logo, spinning globe, or other startup screen.

3 You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Enter the requested

4. Startup is complete when you see the utilities window

Just backup your files first and create a time machine backup if you can. I didn’t lose anything however. Also make sure you have a stable internet connection throughout.

195 replies

Aug 13, 2020 9:00 AM in response to ulogan

This is a little off topic, but very interesting to me. Concerning the just released update, I have an old late 2009 iMac (in addition to two recent ones) which runs the High Sierra OS. I understand that High Sierra is no longer supported. However, yesterday it updated itself. Totally unexpected. That tells me that Apple must have determined that this update was badly needed to fix something. It speaks well for them, in my mind.

Aug 13, 2020 3:42 PM in response to obscurebug

Thanks for the help but I unfortunately I saw your message too late. I actually just wiped my drive clean after saving my important files, and downloaded a clean os install. Then I reset my nvram/pram to get my Touch Bar to work again. The OS is actually a bit different now because now the log in page after a restart comes instantly and then after I unlock the computer, the loading bar shows up. Kind of strange because that's never how my computer was before, but so far I'm having no issues. Hopefully this isn't like the other 10 things I've tried and it stays fixed.

Aug 16, 2020 10:30 PM in response to alekseyfromsan francisco

I have the same problem. But I found a wonderful solution which permanently fixed my problem and now I am completely frustration free. The solution: I went back to using my PC laptop with Windows 10, which never crashed once in all the years that I owned it. Apple used to make good stuff but nowadays Apple has become synonymous with crap and utter frustration.

Aug 18, 2020 2:57 AM in response to kelli303

Because the Supplemental Update didn't stop the kernel panics, I decided to downgrade from 10.15.6 to the macOS that came with my MacBook Air: Catalina 10.15.3.


To do so, I rebooted my Mac pressing Shift-Option-⌘-R, exactly as suggested by Apple Support:


Almost three hours later, the installation has finished, but it is not 10.15.3 I got. It is the all buggy, permanently panicking 10.15.6 again. This is so bizarre, I don't even have words for this. Isn't there any way to get rid of this freakin' car crash of a macOS version?

Aug 18, 2020 7:52 PM in response to JimInVA

Okay, I agree to what you and others have said and I will stop ranting. But I am just extremely frustrated that I can't find a solution to my Kernel Panic issues. I even spent a long time with Apple support on the phone and they had me reinstall my entire operating system. But the issues just came back. But I agree with what you say, that just letting off steam doesn't help anyone. So no worries, I'll keep my mouth shut for now and just hope the OS issues get fixed some time soon.

Aug 19, 2020 3:24 PM in response to Madtruk

Being quite desperate, I installed the Big Sur public beta today. But without luck: My MacBook just crashed again. There are two options now:


1) A hardware defect on a brand new computer, which just coincides with similar kernel panic issues of many other users.

2) A macOS problem which affects both Catalina and Big Sur.


I guess I'll have to return the Mac to the shop.


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Catalina 10.15.6 keeps crashing

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