Since installing Catalina yesterday, multiple crashes from userspace watchdog timeout

Since I installed Catalina yesterday, I have had around five crashes with the error:


panic(cpu 6 caller 0xffffff7f8879cad5): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 140 seconds


Any solutions. iMac Pro had been operating fine before update. Only apps running at the time were Chrome and TimeMachine backing up to a Drobo 5N2 (plus of course background apps like Google Backup and Sync, Dropbox, etc).

iMac Pro

Posted on Oct 8, 2019 9:20 AM

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Posted on Apr 14, 2020 1:23 AM

I solved! it was enough to start the PC and press cmd+R and keep it pressed until a screen appears to reinstall the operating system. I chose to reinstall it, and it was the correct choice, I have not lost any data, simply reinstalled the OS from the beginning. After 45 minutes the OS is back to 100% operational, it restarts and shuts down regularly, I don't tell you how happy I feel! try it too. i follow this instruction:

<< (Restart, while holding Command-R)

If you can, run Disk Utility, and try a Repair Disk.

If that completes with no problems found, Quit Disk Utility, which will return you to the recovery menu.

Then, you will likely want to Reinstall OS X. It will use your internet

connection to download the system, then will continue with the

reinstall. You won't lose your own files and apps, but the reinstall

will simply reinstall the system in place.

Assuming your boot drive is still good, that should fix your kernel panic issue. >>


Link: https://forums.macrumors.com/threads/panic-cpu-2-caller-error.1961380/




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577 replies

Jan 10, 2020 10:53 AM in response to grace1717

A few weeks back I was getting a couple crashes a day. But now I haven't crashed in well over a week. I'm not sure what could be different. I do consciously put my computer to sleep instead of letting it go into sleep mode on it's own.

I did attempt an upgrade of my hard disk. I had to send back the new internal hard disk due to it being unreliable, so I should have the same setup that I had before, but in the process I updated all of the firmware and ran lots of tests when I was trying to get the new hard disk to work. Maybe in all of that something fixed the issue, I don't know.

I know that isn't helpful, but I haven't crashed since then.

In terms of my system setup, I had my current hard disk in a USB enclosure and booted from it several times, then migrated it back to internal when I gave up on the process. I worked my way through a big list of tests, but they were all applied to the new faulty hard disk. With all the noise, I'm not sure I can offer advice.

Jan 15, 2020 10:03 PM in response to ProfessorScott

Brand new 16" MBP on 10.15.2.


Laptop in clamshell mode w/three monitors plugged in (two usb-c -> mini-displayport, one HDMI via USB-C "multi-av adapter".


Unplug usb-c->mini dp adapters, unplug multi-AV adapter, move laptop to living room, attempt to open screen and have MBP wake from sleep and....it's doing a fresh boot instead because it crashed with this error.


Don't have much open at all other than Teams, a terminal session, Vmware w/Win10 VM, Github, Microsoft RDP client, Messages app.


Hoping this doesn't become a frequent thing :(

Jan 16, 2020 8:24 AM in response to benM3

Still happening :( Same as previous reports, and others reports.

panic(cpu 6 caller 0xffffff7f9179dad5): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds
service: com.apple.logd, total successful checkins since wake (145161 seconds ago): 14517, last successful checkin: 0 seconds ago
service: com.apple.WindowServer, total successful checkins since wake (145161 seconds ago): 14505, last successful checkin: 120 seconds ago

Jan 22, 2020 4:48 AM in response to kyle.albert

Sorry, gotta deflate.

But this Catalina is a piece of crap!

I'm very sorry I installed Catalina.

I have besides the watchdog crashes which come up again and again also problems with copy&paste e.g. in Photoshop. I also have problems with Safari over two screens. And there is even more in the mail program.

It is the absolute horror, because these are partly serious errors. And it's just completely **** that nothing happens from Apple. We are really ready for Microsoft now. I don't see much difference anymore. I'm just so disappointed!


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Jan 23, 2020 12:28 PM in response to bathnm

Thanks for that info. I already have that checked. What about the rest of the options?

  • Turn display off after... X mins/hrs
  • Put hard disks to sleep
  • Wake for Wifi
  • Enable Power Nap


Do you have an option to toggle "Automatic graphics switching"? I have mine selected but have been thinking to deselect that in case this is all about a graphics issue.

Jan 24, 2020 1:10 AM in response to Xebrawerx

I'm trying to temper my excitement, but using the settings given by Xebrawerx above, I did not have a crash while my MBP 16 was connected to my external displays! This is the first time since I bought this computer in Nov 2019. Huzzah!


NB. I also turned off "Automatic graphics switching" for the first time before bed yesterday. So I will turn in back on now and see if it still keeps from crashing.

Jan 24, 2020 4:31 AM in response to bathnm

Too bad beta 2 of 10.15.3 still have the problem. Let’s hope for beta 3. I've been reporting all my problems about this to Apple and have opened a specific bug report about this problem that I've updated with logs continously.


I (I guess most of us) really want to be able to sleep and wake the computer reliably – both automatically after a certain time and manually. :-/

Jan 24, 2020 12:42 PM in response to Rentsch2

Update: Turned "Automatic graphics switching" back on and didn't touch anything else. Crashed again overnight. Turned it back off and no crashes all day yet today even when I walk away from computer and come back to it sleeping.


Really starting to compile more evidence it's all about GPU. I've got the new 2019 MBP 16 with the following graphics:

AMD Radeon Pro 5500M 8 GB

Intel UHD Graphics 630 1536 MB


Anybody else make sense of this? I'm guessing we all don't have the same graphics units...

Jan 25, 2020 11:00 AM in response to prasantfrommesa

Very sad to report kernel panic even with Automatic Graphic Switching turned off.


Woke up to this again:

panic(cpu 12 caller 0xffffff7f9419dad5): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds

service: com.apple.logd, total successful checkins since wake (130 seconds ago): 14, last successful checkin: 0 seconds ago

service: com.apple.WindowServer, total successful checkins since wake (130 seconds ago): 2, last successful checkin: 120 seconds ago


Ugh


Will give Ampethamine a chance as suggested above. The app ;)

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Since installing Catalina yesterday, multiple crashes from userspace watchdog timeout

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