Apple Event: May 7th at 7 am PT

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Level 1

30 points

Big Sur kernel panic

Recently i upgraded to Big Sur and i leave the computer for some time and came back and see that the system was rebooted with kernel panic. any help would be appreciated to fix the issue.

Here is the log i get when the imac pro is started

panic(cpu 4 caller 0xffffff800e153a13): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds

Kernel Panic Log

iMac Pro

Posted on Nov 14, 2020 6:42 AM

Similar questions

Kernel Panic since upgrading to Big Sur 11.2.1 Hi, Hopefully someone smarter than me can figure this out. I updated to Big Sur 11.2.1 last week. Prior to this, had zero problems or issues with the computer. Ever since, I get kernel panics and uncommanded computer restart with the following in the error report. Any Ideas? Thanks!
682 5
Kernel Panics Hello, I am having kernel panics which are causing my machine to reboot every few days, always when I'm not actively using it. I have a 2017 MacBook Pro, 2.3ghz dual core i5 with 16GB RAM running the latest version of Big Sur (11.3.1). Have reset the PRAM and NVRAM and this has made the reboots less frequent (they used to happen every day). Below are the two most recent issue reports. Would really appreciate advice on whether or not this is a hardware issue, as don't want to create a clean user profile or OS reinstall unnecessarily. **** Thanks in advance. [Link Edited by Moderator]
1082 7
iMac/Big Sur My new M1 iMac running macOS Big Sur 11.5.2 keeps having "panic attacks" which cause it to re-boot. I have reported this to Apple many times and spoken at length to Apple Support who basically just suggested re-loading Big Sur which has changed nothing. The message box containing the re-boot information says: "panic(cpu 0 caller0xfffffe001f124c10): Wake transition timed out after 35 seconds while calling power state change callbacks. Suspected bundle: com.apple.driver.usb.AppleUSBHub. Thread 0x9e1a. Debugger message: panic" and so on for another 6 pages. It is not always "cpu 0", it varies. Has anyone else experienced this problem?
435 1

166 replies

Apr 29, 2021 12:35 PM in response to Dogcow-Moof

Thanks Dogcow-Moof for the information - it is noted.

Big Sur kernel panic

Welcome to Apple Support Community

A forum where Apple customers help each other with their products. Get started with your Apple ID.

Learn more Sign up