Since installing Catalina yesterday, multiple crashes from userspace watchdog timeout

Been getting a similar issue. I seem to be able to stop the crash when I change the Screen Saver to something other than Catalina.

I have a Mac mini, 2018 and have two Apple LED Cinema Displays, connected via adapters from Thunderbolt to DisplayPort. I see that 10.15.3 has fixed it for someone, lets hope it does. I keep sending crash reports to Apple!

Hi guys - I did some tinkering and noticed that this may be a cabling issue.

Definitely make sure that you have the Thunderbolt cables connected properly especially if you have an eGPU. Just double checking the cables, etc. fixed it for me.

panic(cpu 2 caller 0xffffff7f9704bad5): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds

service returned not alive with context : is_alive_func returned unhealthy : WindowServer initialization not complete (post IOKitWaitQuiet)

service: com.apple.logd, total successful checkins since load (9850 seconds ago): 986, last successful checkin: 0 seconds ago

service: com.apple.WindowServer, total successful checkins since load (9790 seconds ago): 946, last successful checkin: 120 seconds ago

Backtrace (CPU 2), Frame : Return Address

0xffffff9154b6b820 : 0xffffff8015f3bb1b

0xffffff9154b6b870 : 0xffffff80160733e5

0xffffff9154b6b8b0 : 0xffffff8016064e5e

0xffffff9154b6b900 : 0xffffff8015ee2a40

0xffffff9154b6b920 : 0xffffff8015f3b207

0xffffff9154b6ba20 : 0xffffff8015f3b5eb

0xffffff9154b6ba70 : 0xffffff80166d2575

0xffffff9154b6bae0 : 0xffffff7f9704bad5

0xffffff9154b6baf0 : 0xffffff7f9704b7e6

0xffffff9154b6bb10 : 0xffffff8016666fcb

0xffffff9154b6bb60 : 0xffffff8016670083

0xffffff9154b6bca0 : 0xffffff8016022c22

0xffffff9154b6bdb0 : 0xffffff8015f41998

0xffffff9154b6be10 : 0xffffff8015f18625

0xffffff9154b6be70 : 0xffffff8015f2f0d5

0xffffff9154b6bf00 : 0xffffff801604b485

0xffffff9154b6bfa0 : 0xffffff8015ee3226

Kernel Extensions in backtrace:

com.apple.driver.watchdog(1.0)[EFAA17B9-A62C-30B7-9602-0BB5282EDDD6]@0xffffff7f9704a000->0xffffff7f97052fff

BSD process name corresponding to current thread: watchdogd

Mac OS version:

19C57

Unfortunately this don't worked.

I my case, i marked the onedrive folder, and also vmware virtual machines folder.

And i have 3 occurrences of kernel panic. I cannot pass one night without this error.. It's very sad.

Today on 16 October 2019 after installing the latest version of OS i had this crash happened to me when I was using Web Storm app.

panic(cpu 2 caller 0xffffff7f8d19cad5): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 140 seconds

service: com.apple.logd, total successful checkins since wake (7930 seconds ago): 794, last successful checkin: 0 seconds ago

service: com.apple.WindowServer, total successful checkins since wake (7930 seconds ago): 780, last successful checkin: 140 seconds ago

Backtrace (CPU 2), Frame : Return Address

0xffffff8128ecb820 : 0xffffff800c73f98b

0xffffff8128ecb870 : 0xffffff800c876c15

0xffffff8128ecb8b0 : 0xffffff800c86861e

0xffffff8128ecb900 : 0xffffff800c6e6a40

0xffffff8128ecb920 : 0xffffff800c73f077

0xffffff8128ecba20 : 0xffffff800c73f45b

0xffffff8128ecba70 : 0xffffff800ced2e05

0xffffff8128ecbae0 : 0xffffff7f8d19cad5

0xffffff8128ecbaf0 : 0xffffff7f8d19c7e6

0xffffff8128ecbb10 : 0xffffff800ce67adb

0xffffff8128ecbb60 : 0xffffff800ce70a73

0xffffff8128ecbca0 : 0xffffff800c826672

0xffffff8128ecbdb0 : 0xffffff800c7457f8

0xffffff8128ecbe10 : 0xffffff800c71c515

0xffffff8128ecbe70 : 0xffffff800c732f75

0xffffff8128ecbf00 : 0xffffff800c84eaf5

0xffffff8128ecbfa0 : 0xffffff800c6e7226

Updated to 10.15 and ran the update today and I'm also getting the same result as VardgesM. Before today's update "Looks like auto firing of sleep event is firing crash code" this was true of me when connected to external monitors. After today's update, the crash is happening if I'm idle for some period of time (not sure how long but its happened twice - maybe 5-10 minutes). Not in sleep mode, sleep mode not auto firing just hangs and crashes after afk for a short period

panic(cpu 2 caller 0xffffff7f9d19cad5): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 140 seconds

service: com.apple.logd, total successful checkins since load (11690 seconds ago): 1170, last successful checkin: 0 seconds ago

service: com.apple.WindowServer, total successful checkins since load (11660 seconds ago): 1145, last successful checkin: 140 seconds ago

Backtrace (CPU 2), Frame : Return Address

0xffffffa4067bb820 : 0xffffff801c73f98b

0xffffffa4067bb870 : 0xffffff801c876c15

0xffffffa4067bb8b0 : 0xffffff801c86861e

0xffffffa4067bb900 : 0xffffff801c6e6a40

0xffffffa4067bb920 : 0xffffff801c73f077

0xffffffa4067bba20 : 0xffffff801c73f45b

0xffffffa4067bba70 : 0xffffff801ced2e05

0xffffffa4067bbae0 : 0xffffff7f9d19cad5

0xffffffa4067bbaf0 : 0xffffff7f9d19c7e6

0xffffffa4067bbb10 : 0xffffff801ce67adb

0xffffffa4067bbb60 : 0xffffff801ce70a73

0xffffffa4067bbca0 : 0xffffff801c826672

0xffffffa4067bbdb0 : 0xffffff801c7457f8

0xffffffa4067bbe10 : 0xffffff801c71c515

0xffffffa4067bbe70 : 0xffffff801c732f75

0xffffffa4067bbf00 : 0xffffff801c84eaf5

0xffffffa4067bbfa0 : 0xffffff801c6e7226

Still having the issue after updated to 19A602"

panic(cpu 10 caller 0xffffff7f8ab9cad5): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 140 seconds

service returned not alive with context : is_alive_func returned unhealthy : WindowServer initialization not complete (post IOKitWaitQuiet)

service: com.apple.logd, total successful checkins since wake (1590 seconds ago): 160, last successful checkin: 0 seconds ago

service: com.apple.WindowServer, total successful checkins since wake (1590 seconds ago): 144, last successful checkin: 140 seconds ago

Backtrace (CPU 10), Frame : Return Address

0xffffff83b4bdb820 : 0xffffff800a13f98b

0xffffff83b4bdb870 : 0xffffff800a276c15

0xffffff83b4bdb8b0 : 0xffffff800a26861e

0xffffff83b4bdb900 : 0xffffff800a0e6a40

0xffffff83b4bdb920 : 0xffffff800a13f077

0xffffff83b4bdba20 : 0xffffff800a13f45b

0xffffff83b4bdba70 : 0xffffff800a8d2e05

0xffffff83b4bdbae0 : 0xffffff7f8ab9cad5

0xffffff83b4bdbaf0 : 0xffffff7f8ab9c7e6

0xffffff83b4bdbb10 : 0xffffff800a867adb

0xffffff83b4bdbb60 : 0xffffff800a870a73

0xffffff83b4bdbca0 : 0xffffff800a226672

0xffffff83b4bdbdb0 : 0xffffff800a1457f8

0xffffff83b4bdbe10 : 0xffffff800a11c515

0xffffff83b4bdbe70 : 0xffffff800a132f75

0xffffff83b4bdbf00 : 0xffffff800a24eaf5

0xffffff83b4bdbfa0 : 0xffffff800a0e7226

Kernel Extensions in backtrace:

com.apple.driver.watchdog(1.0)[58392D62-D9E8-3022-85C1-B78AC93B9167]@0xffffff7f8ab9b000->0xffffff7f8aba3fff

BSD process name corresponding to current thread: watchdogd

Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev

Mac OS version:

19A602

Anyone else notice this in the crash report?

System uptime in

nanoseconds: 17727563566874

last loaded kext at

15592667567783:

com.logitech.driver.LogiWheelDriver        1

(addr 0xffffff7f8d440000, size 53248)

last unloaded kext

at 15695015835327: com.Logitech.Control Center.HID

Driver        3.9.7 (addr

0xffffff7f8ff2b000, size 286720)

I get this crash when I have my two 4k monitors connected to my 2019 iMac (shortly after it tries to go to sleep). I no longer get the crash after I disconnected them. Unfortunately none of the other suggestions on here helped.

Never had this issue before upgrading to Catalina.

In my opinion this has nothing to do with the screensaver. The error also appears to me in the middle of work processes.

But I also saved a lot on external hard disks and wondered if it could have something to do with one of these hard disks or with TimeMachine.

Why is no one from Apple, Parallels or Microsoft responding to this error? The bug is very popular, obviously.

Same exact issue here. Two external monitors connected. Full panic crash at auto sleep, every time.

panic(cpu 14 caller 0xffffff7f8419dad5): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 140 secondsservice: com.apple.logd, total successful checkins since wake (150 seconds ago): 16, last successful checkin: 0 seconds agoservice: com.apple.WindowServer, total successful checkins since wake (150 seconds ago): 2, last successful checkin: 140 seconds ago

My 16" MBP is about 3 or 4 weeks old at this point - my first watchdog lockup happened right after upgrading to 10.15.2. I had a 15.4" MBP running Mojave and used the wireless migration to move my data.

I've had 1 - 12 lockups a day, doesn't seem to matter what is plugged in. Last week it locked with just the power cord plugged in. Sometimes the lockups occur when I've walked away, so can't blame anything I'm doing while in front of the computer.

This week I tried to go back to Mojave, only to find that you can't install an earlier version of the OS than what was shipped with the computer. So I re-installed Catalina using the internal partition and then allowed it to restore from my Time Machine backup.

It's been a little over 24 hours, but I've had it running with a Windows 10 VM with applications executing constantly, with the Time Machine external drive plugged in, and an external monitor. So far, so good.

Based on other comments here, I'm wondering if the root problem may be the image that the factory laid down. My re-install seems to have worked. If it appears again, I'll post an update. It's been 3 weeks of misery. Normally I would have waited a couple of days to report it, but realistically, given how hard I'm using it now, it would have locked by now and I know a great number of people are having similar issues.

Hi PM,

In Energy Saver I selected "Prevent computer from sleeping automatically when the display is off". A few have done this and reported it stops crashes. It seems the crashes are linked to power management and bringing the device out of sleep mode, or it going into sleep mode. This setting stops any sleep.

Have you tried to use 'Amphetamine' from the App Store to keep a screensaver forced on overnight? This works for me. Not ideal by any stretch, but at least I can keep my $5k iMac Pro ON overnight...

Another crash today after simply unhooking my Macbook from its external monitors while in clamshell mode.

panic(cpu 2 caller 0xffffff7f83f9dad5): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds
service returned not alive with context : is_alive_func returned unhealthy : WindowServer initialization not complete (post IOKitWaitQuiet)

Anyone know if Apple ever acknowledges these issues, or if we'll just have to wait to see that it is fixed in an OS X build?

If they don't, do we just continue to beat this dead horse and bump the thread while crossing our fingers?

DOL_Mark wrote:

Wondering if it's a graphics card overheating issue? Same error as everyone else is seeing but nothing to do with power saving. Are people running high load graphics on pretty screensavers?

Not an overheating issue. I use no screensaver and my GPU is idling 99% of the time.