iMac Pro (2017) Panic Reboots

[Pete405]

These random reboots started about 3-4 weeks ago after I did a security update (not sure if that mattered)
I couldn't get the reboots to stop so someone suggested I upgrade the OS to Catalina (was on Mojave) to see if that fixed the issue.
I am now on Catalina 10.15.4
It ran good for two days and then had a panic again today . Below is the error If anyone can help on this.

It Always seems to reboot when I'm Remote into work and in the middle of something. (of course)
This is frustrating as hell .



panic(cpu 1 caller 0xfffffff0201c00e0): userspace watchdog timeout: no successful checkins from com.apple.bridgeaudiod in 180 seconds
service: com.apple.UserEventAgent-System, total successful checkins since load (7730 seconds ago): 774, last successful checkin: 0 seconds ago
service: com.apple.bridgeaudiod, total successful checkins since load (7730 seconds ago): 756, last successful checkin: 180 seconds ago
service: com.apple.logd, total successful checkins since load (7730 seconds ago): 774, last successful checkin: 0 seconds ago

Debugger message: panic
Memory ID: 0xff
OS version: 17P4281
macOS version: 19E287
Kernel version: Darwin Kernel Version 19.4.0: Mon Mar 2 20:38:56 PST 2020; root:xnu-6153.101.6~2/RELEASE_ARM64_T8010
Kernel UUID: 24BEA3DB-10C2-36A4-A7D5-C71CE0D00021
iBoot version: iBoot-5540.105.2
secure boot?: YES
x86 EFI Boot State: 0x16
x86 System State: 0x0
x86 Power State: 0x0
x86 Shutdown Cause: 0xec
x86 Previous Power Transitions: 0x70707060400
PCIeUp link state: 0x89271611
Paniclog version: 13
Kernel slide: 0x0000000017e64000
Kernel text base: 0xfffffff01ee68000
mach_absolute_time: 0x2b3f87652e
Epoch Time: sec usec
Boot : 0x5eab1e5b 0x0006db41
Sleep : 0x00000000 0x00000000
Wake : 0x00000000 0x00000000
Calendar: 0x5eab3c93 0x00018bd8

Total cpu_usage: 12184344
Thread task pri cpu_usage
0xffffffe000e20fd8 watchdogd 97 0
0xffffffe00046c000 kernel_task 81 2916256
0xffffffe000dbf4d0 logd 37 147100
0xffffffe000e5ea40 logd 37 417146
0xffffffe000d38a90 watchdogd 31 0

Panicked task 0xffffffe000d1e400: 223 pages, 3 threads: pid 33: watchdogd
Panicked thread: 0xffffffe000e20fd8, backtrace: 0xffffffe01509b000, tid: 664
lr: 0xfffffff01f6b8764 fp: 0xffffffe01509b040
lr: 0xfffffff01f6b85c0 fp: 0xffffffe01509b0b0
lr: 0xfffffff01f7d2e7c fp: 0xffffffe01509b160
lr: 0xfffffff01fc8162c fp: 0xffffffe01509b170
lr: 0xfffffff01f6b7f28 fp: 0xffffffe01509b4e0
lr: 0xfffffff01f6b8280 fp: 0xffffffe01509b530
lr: 0xfffffff020402934 fp: 0xffffffe01509b550
lr: 0xfffffff0201c00e0 fp: 0xffffffe01509b570
lr: 0xfffffff0201bfe1c fp: 0xffffffe01509b590
lr: 0xfffffff01fc15fc0 fp: 0xffffffe01509b5f0
lr: 0xfffffff0201bf370 fp: 0xffffffe01509b6d0
lr: 0xfffffff01fc1f00c fp: 0xffffffe01509b860
lr: 0xfffffff01f7a28d0 fp: 0xffffffe01509b980
lr: 0xfffffff01f6bdf24 fp: 0xffffffe01509b9e0
lr: 0xfffffff01f693cf0 fp: 0xffffffe01509ba60
lr: 0xfffffff01f6abc7c fp: 0xffffffe01509bb10
lr: 0xfffffff01f7c9760 fp: 0xffffffe01509bbd0
lr: 0xfffffff01f7d2fd4 fp: 0xffffffe01509bc80
lr: 0xfffffff01fc8162c fp: 0xffffffe01509bc90
lr: 0x00000001905fb198 fp: 0x0000000000000000

 

[Taz Mangus]

Check out the other thread about kernel panics.

Constant Kernel Panics – userspace watchdog timeout: no successful checkins from com.apple.WindowServer

I have been receiving these kernel panics multiple times a day (the computer freezes, followed by an eventual crash/restart if I don't do a hard shut down first). It occurs most frequently when waking the computer from sleep. Often I'll go to the bathroom and return to my computer, only to see...

forums.macrumors.com

 

[maurodriguez]

iMac 21.5-inc late 2017, 10.15.4, and the same. Help!!!

 

[Ben J.]

I haven't followed this issue at all, because I've been very happy with Catalina for months. Suddenly yesterday after wakeup from sleep, spinning wheel and chaos and crash. After restart, my APFS volume was unbootable and I had to format. I had a CCC backup.

Just before this happened, I had noticed that my energy settings were set to just sleep screens. (I have three displays, my iMac i5 2017, and two more.) And I had de-selected "Prevent that mac goes to sleep with displays". (Not shure of the exact english.) As I said, on very first wake up, total crash, and ruined boot-disk.

I have restored from backup, and everything's OK. I will not deselect that option again.

I'm guessing this has to do with wake-up from sleep, maybe in combination with multiple displays. I see sleep mentioned several times in this thread.

I'll just keep my imac awake from now, and let displays turn on/off automatically. No big deal. On the contrary, I think leaving the mac running, with a restart every other week, actually have contributed to my pleasent experience with Catalina. And I had actually not noticed that my mac did not go to sleep at all.

IHTH.