Big Sur kernel panic

rbmanian75 wrote:

I boot into safe mode and it does not happen. Then i boot into normal model and so far no crashes. Will update if the crash happens again.

Yes, keep us posted if this resolved. your issue...?

I have the MacBook Pro 16 2019 and I also experience similar crashes but only when I use the parallel desktop 16.

The virtual machine runs without any issues and the main Mac OS is running fine. The crashes usually occur when I leave the virtual machine on for a while and the fans spin at maximum RPM before the entire computer shuts down.

panic(cpu 2 caller 0xffffff8011f53a13): userspace watchdog timeout: no successful checkins from com.apple.remoted in 180 seconds
service returned not alive with context : unresponsive work processor(s): remoted heartbeat on bridge 
service: com.apple.logd, total successful checkins since wake (4700 seconds ago): 471, last successful checkin: 0 seconds ago
service: com.apple.WindowServer, total successful checkins since wake (4700 seconds ago): 471, last successful checkin: 0 seconds ago
service: com.apple.remoted, total successful checkins since wake (4700 seconds ago): 453, last successful checkin: 180 seconds ago

Backtrace (CPU 2), Frame : Return Address
0xffffffa0bdb0b670 : 0xffffff800ecbc66d 
0xffffffa0bdb0b6c0 : 0xffffff800edff073 
0xffffffa0bdb0b700 : 0xffffff800edef6aa 
0xffffffa0bdb0b750 : 0xffffff800ec61a2f 
0xffffffa0bdb0b770 : 0xffffff800ecbbf0d 
0xffffffa0bdb0b890 : 0xffffff800ecbc1f8 
0xffffffa0bdb0b900 : 0xffffff800f4bee84 
0xffffffa0bdb0b970 : 0xffffff8011f53a13 
0xffffffa0bdb0b980 : 0xffffff8011f536ba 
0xffffffa0bdb0b9a0 : 0xffffff800f4460ee 
0xffffffa0bdb0b9f0 : 0xffffff8011f52b0a 
0xffffffa0bdb0bb20 : 0xffffff800f4502bb 
0xffffffa0bdb0bc80 : 0xffffff800edaaa61 
0xffffffa0bdb0bd90 : 0xffffff800ecc1d77 
0xffffffa0bdb0be00 : 0xffffff800ec985d5 
0xffffffa0bdb0be60 : 0xffffff800ecafb82 
0xffffffa0bdb0bef0 : 0xffffff800edd3823 
0xffffffa0bdb0bfa0 : 0xffffff800ec62216 

Similar problem here with my MBP 2019. But I suspect Time Machine is the culprit: the kernel panic started since I installed a external drive to use it with TimeMachine - the MBP goes into kernel panic very often. I deactivated the auto backup and unplugged the drive to see if happens again...

Update for my iMac late 2015, 8GB.

Never had an auto shutdown/restart with kernel panic. Since Catalina, I've had kernel panics on manual shutdown after long idle time. Will not upgrade to Big Sur until this is resolved.

The one common variable is long idle time. So I disconnected the external display and 3TB LaCie drive, and turned off auto update for Time Machine.

After long idle time, no auto shutdown, then normal manual shutdown with no kernel panic:

1. No apps running.
2. Firefox running, but never connected to any URL.
3. Firefox and local apps running, never connected to any URL.
4. Local apps running, including mail and Quicken, connected to WiFi for updates, Firefox not connected to URL, all apps shut down before long idle time.
5. No apps running, external monitor reconnected (but not functioning).
6. No apps running, LaCie reconnected and Time Machine auto updating.

Bomb on manual shutdown:

Firefox and other apps running, Firefox used extensively on WiFi, all apps shut down after long idle time.

So I don't think hardware is involved here, unless you want to blame the WiFi router. And the one thing that seems to guarantee it is Web surfing via WiFi, a long idle time, then quitting all apps before manual restart. (BTW, I also had trouble when I used Google Chrome but this procedure did not involve Chrome.)

It is possible that they fixed the problem and just didn't mention it. I haven't had any panics since installing 11.1 yet but I was not getting them every day. If I go a week without them, that might indicate that the issue is fixed.

Good to know, I have only experienced it this year with my new MBP purchase - I did not have similar experience with my previous MBP Retina mid 2012, although I was on Catalina.

For the record my current MBP specifics are:

MacBook Pro (16-inch, 2019)

Operating system: Big Sur

Version 11.0.1

Memory: 64 GB

Processor: 8-Core Intel Core i9

Processor speed: 2.3 GHz

External monitor LG display 27UL850 connected with USB-C.

The main softwares that I have been using is Adobe CC Premiere Pro and After Effects - by the way Adobe's support desk team recently told me that Premiere Pro is releasing new updates in order to resolve issues/bugs that have turned up since Big Sur is lunched.

So far on my personal iMac Pro, the results with Big Sur 11.1 match those of Catalina: Having two external Dell monitors plugged in causes the watchdog kernel panic after being asleep for a while. I've seen it take as little as 10 minutes, and as long as 3 hours.

If I disconnect both monitors from the Mac before it sleeps then I never (so far) see a kernel panic.

Does anyone know where I can buy a dual Thunderbolt 3 switch box so I don't have to reach around back and unplug cables each time I get up from my desk? Powering off the monitors isn't sufficient. macOS still detects them in their powered off state.

Of note: I previously downgraded to Mojave and this prevented the panics. I went back and forth between Mojave and Catalina four or five times hoping that newer versions of Catalina (and later Big Sur) would solve the issue, but the experience has been consistent.

*** UPDATE! ***

I had previously posted that the newest (and first) update of Big Sur had solved my kernel panic issues.

Well, this evening I had my first kernel panic under the new update.

So, the OS update did not fix the issue.

I will say that the kernel panics are not happening as frequently, but unfortunately, the Big Sur update did not fix the issue.

I don't know how to decipher the panics and what is causing them.

There is a report that pops up upon reboot, but I have no idea what any of it means.

I was getting none of this when on Catalina. It started happening once I upgraded to Big Sur.

Thought the new update earlier this week solved the issue, but unfortunately not.

I used to work at Sun Microsystems, and we occasionally had kernel panics on large servers. Usually, it meant there was a hardware problem, such as bad memory. However, in this case, most of us started seeing them right after we installed Big Sur. That suggests a software problem, particularly since many of us are getting them on brand new 16-inch MacBook Pros; mine is only about 2 months old. Since Apple went to OSX, MacOS is built on top of UNIX. It used to be on FreeBSD; I don't know whether Apple still uses that. BSD refers to the Berkeley Standard Distribution. UNIX was developed at Bell Labs, but it was turned into a useful OS when graduate students at UC Berkeley such as Bill Joy (one of the founders of Sun) added many utilities to it, such as the visual editor and a whole slew of other executables. However, Bell Labs later developed its own flavor of usable UNIX. In fact, Sun began with Berkeley UNIX and switched to AT&T UNIX later. Sun called its OS Solaris. In general, UNIX is a very robust OS, much more so than any Microsoft has developed. For example, one common cause of system crashes is an application writing outside its own memory allocation. UNIX does not allow that; Windows does. Since Apple's code runs on top of UNIX, it seems likely that something in Big Sur code is causing these kernel panics. I never had any on Catalina, but some people say they did.

I am on Big Sur's latest update (Version 11.1), since the 14/12 and I have experienced a new kernel panic a few hours ago. Over the last six months I have tried so many different things but nothing seems to ease the issue. I have seen that my laptop's fan is working intensively when is plugged in to the external display and go down when disconnected but not 100% sure if that is causing the kernel panic - the computer's fan is working sometimes intensively when Adobe Premiere starts up and not sure if that can be a software issue from Adobe's software just or if it is related with the latest operating system. Also kernel panic happens occassionally, meaning every 5-10 days which makes it even more difficult for me to see if it happens on the safe mode. It is not possible to have it on safe mode all the time because some work needs to be done too.

com.parallels.virtualsound	1.0.36 36
com.paragon-software.filesystems.ntfs	106.5.15
com.paragon-software.kext.VDMounter	

Start with these.

Per thread above.....I am also running Little Snitch.

After some time the issue has returned. 🤷‍♂️

Note that by reinstalling Parallels from scratch, you also would've installed any new updates Parallels may have issued for Big Sur compatibility since the last time you checked.