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User profile for user: alekseyfromsan francisco
alekseyfromsan francisco Author
User level: Level 1
78 points

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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User profile for user: KVTinnkeeper
KVTinnkeeper
User level: Level 1
11 points

Posted on Jul 29, 2020 10:11 AM

Days ago while debugging crashes I was pretty sure there was a memory leak (https://discussions.apple.com/thread/251610118). Here is what I am seeing now....


Imac27(Late 2103... 24GB ram)... No crashes since purging 32 bit applications. Running Activity monitor and watching memory allocations... Memory ramps up under heavy use, but is (Mostly) returned when apps quit... If system left logged in and unattended, memory slowly builds... but the system has enough ram to swallow it. When system logged out, memory cleaned up and next log in looks ok. Not like a fresh boot, but lots more memory available then prior to log out. Anecdotally I would say that WindowServer process is suspect, as it's memory allocation keeps growing.. Long running apps (Carbon Copy Cloner directing multi GB network backups) cause memory usage to ramp up. But system stays together. Unfortunately, the system that is the target of the network back up crashes.....


MacMini(Late 2012.... 16GB ram).... Under light use, no crashes after purging 32 bit applications. However, crashes still occurring under 2 cases.... When a usb drive attached to the mini is being used as the network target of a multi GB backup (>150GB), and when running VMware Fusion.


When the usb drive attached to the MacMini is the network backup target, the machine crashes after it receives about 130GB of backup data. Seems very repeatable. System just drops dead. Looked at logs... See nothing posted in log files for minutes on end, until hardware reset button initiates forced boot. I don't think that the process which causes the crash is caught by the OS before the system goes down...


When the MacMini is running VMware Fusion... have not established a pattern other than don't turn your back on it... We only run Win10 using Quickbooks in Fusion... Generally stays up for 15-20 minutes of use, allowing quick things to be done... if interrupted and leave the machine without logging off, will find it has crashed if not attended to within 60 minutes or so...Unlike the crash when the system is a backup target, this one seems totally random. Probably because VMware and Wind10 are pushing the system harder and in random directions.


My bottom line....


  1. if you are upgrading or have upgraded, purge all 32 bit apps and their companion crud... The system is not stable at all if a 32bit app or its agents or daemons gets touched. Absolutely huge difference in machine stability.
  2. Memory Leak Work Around..... Be very careful with long duration or cpu/memory intensive processes. While you are running them, run activity monitor and watch the 'Memory Used" number. If that approaches 60-70% of physical memory, be prepared to stop your process and log out to reset memory if you can. Lots of people are reporting crashes with VMware or Virtualbox.... but I suspect that other memory intensive apps would also be having the same problem, as I see it in a long duration process on a MacMini just accepting network data and writing to disk.
  3. Hope, keep your fingers crossed, practice what ever superstition works best for you.... and hope that APPLE fixes this bug quickly....



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User profile for user: frtzn
frtzn
User level: Level 1
8 points

Aug 4, 2020 11:00 PM in response to frtzn

frtzn wrote:

[SOLUTION?]

My MacBook Air had recurring kernel panics / hard reboots about once a day, mostly over night when it was on idle.

I now got entirely rid of the problem…
My MacBook runs perfectly stable for seven days now.


There is an unwritten law that once you mark a problem as 'solved', it instantly reappears. After working flawlessly for seven days, my Mac crashed again tonight while running at idle. This time, the crash log only states:


Intel CrashLog recorded due to unexpected reset


As I cannot downgrade to 10.15.5 (it is a brand new machine, so there is no old backup I could use), I guess I'll just have to wait for Apple to fix this. Hopefully they do so in 10.15.7.

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User profile for user: ashealey12
ashealey12
User level: Level 1
4 points

Aug 5, 2020 12:37 PM in response to obscurebug

Ok, i've figured out a workaround. After your computer just randomly shuts down / restarts itself - DONT CLOSE the little pop up that says "Your computer was restarted because of a problem." (then it asks you to click ignore or report)


... just push it to the right or on the bottom of the main window without clicking ignore or report.


I've been running smooth for 3 days now

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User profile for user: pjholden
pjholden
User level: Level 1
4 points

Aug 6, 2020 7:07 AM in response to alekseyfromsan francisco

I just want to add my voice here, I've had constant, consistent crashing in mac os x 10.15.6 - I've since reverted to 10.15.5 and - touch wood - things seem to be fine.


Here's what would happen:


It would be working fine for a few hours, then the dock and file menus would vanish, and reappear (and sometimes they'd reappear with multiple instances of any open apps in the dock - so I'd have twenty icons for the mail.app, for example).

It would appear to have lost access to all passwords - and would ask me to login again to icloud and gmail (typing the password and hitting return would do nothing)

I'd get dialogue like "accountsd wants access to use the "login" keychain with a password prompt (and some others I've expunged from my memory).



I tried various things, including a total system wipe, and reinstall. Problems persisted. In the end, going back to the previous version has fixed it so I'm sticking with that for now.


(I'd run etrecheck, but I've only just found out about it, and I've basically given up on trying to get 10.15.6 to work now)


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User profile for user: lkrupp
lkrupp
User level: Level 6
14,554 points

Aug 6, 2020 1:51 PM in response to dragontorc

dragontorc wrote:

Apple had no plans to release a major update for Catalina in the form of macOS 10.15.7.

The folks @ Cupertino are actually working on a supplemental update for macOS 10.15.6 containing a fix for the App Sandbox which caused virtualization software to crash with memory leaks and "watchdog timeout" kernel panics.

Can you please provide evidence that a supplemental update is being worked on. Or is it just something you heard from the friend of a friend of a friend. Have you spoken with Apple engineering?

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User profile for user: Ronasara
Ronasara
User level: Level 6
14,631 points

Aug 6, 2020 2:32 PM in response to lkrupp

Please understand that we are Apple product users just like you. We do not have any inside information. Furthermore, we are prohibited from discussing what Apple may or may not be doing. That said, when there have been serious problems in the past, the company has normally addressed them, so that could be the case now, as well. Sorry for your frustration.

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User profile for user: Petelab
Petelab
User level: Level 1
8 points

Aug 7, 2020 8:06 AM in response to BowAndArrow

I bought a new iMac 2 weeks ago running Catalina 10.15.6. Every time I put it in Sleep mode it crashes.

So I called Apple and told them I wanted to return it because of this problem. This is a new machine before I put my software on it-so not a conflict with 3rd party software. Returned this iMac and purchased another one from Apple.

The second machine is also crashing when put in sleep mode. I have read many posts here and in other forums that people have been having this problem for a long time. I have tried reloading the OS, and reset the SMC and PRAM. These did not help.

The fact that it is happening on 2 brand new computers tells me it is not my system.

Does Apple read these forums? When are they going to fix the huge problems with Catalina?


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User profile for user: frtzn
frtzn
User level: Level 1
8 points

Aug 11, 2020 12:14 PM in response to Maple603

This is becoming increasingly annoying. The issue has been around for almost a month now, it affects thousands of customers around the globe (Apple support websites but also social networks are full of reports), and so far there isn't even an official statement by Apple (something of the sorts “We are aware of the issue, a fix is under way”)? C'mon!

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User profile for user: obscurebug
obscurebug
User level: Level 1
9 points

Aug 11, 2020 2:36 PM in response to frtzn

I tried to restore my iMac to an external SSD but it was going to take 80 hours, plus I'd have to recover all my work & changes in the past few weeks. I gave up as I can't be without my system for 3.5 days.


My next plan is to try using tmutil and bless to do a downgrade restore to a seperate SSD while I'm still using my system.


I'm currently having to reboot my system twice a day.

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Catalina 10.15.6 keeps crashing

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