Big Sur Crash when PC is left unattended randomly (watchdog kernel panic)

[McShmoopy]

Hi Guys
I've been running Big Sur and Opencore but at some point upgrading to Big Sur or opencore I've been having these random freezes. I know real MacOS users are also experiencing the same thing but for the life of me I cant figure out the solution. IVe tried removing programs and following alot of seemingly random steps but no luck.

If anyone can advise it'd be greatly appreciated. Here is the report log from the crash.

panic(cpu 6 caller 0xffffff8011764a25): 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 (3660 seconds ago): 367, last successful checkin: 0 seconds ago
service: com.apple.WindowServer, total successful checkins since load (3630 seconds ago): 351, last successful checkin: 120 seconds ago

Backtrace (CPU 6), Frame : Return Address
0xffffffb0a3743670 : 0xffffff800e4bab4d mach_kernel : _handle_debugger_trap + 0x3dd
0xffffffb0a37436c0 : 0xffffff800e5fd7e3 mach_kernel : _kdp_i386_trap + 0x143
0xffffffb0a3743700 : 0xffffff800e5ede1a mach_kernel : _kernel_trap + 0x55a
0xffffffb0a3743750 : 0xffffff800e45fa2f mach_kernel : _return_from_trap + 0xff
0xffffffb0a3743770 : 0xffffff800e4ba3ed mach_kernel : _DebuggerTrapWithState + 0xad
0xffffffb0a3743890 : 0xffffff800e4ba6d8 mach_kernel : _panic_trap_to_debugger + 0x268
0xffffffb0a3743900 : 0xffffff800ecbf004 mach_kernel : _panic_with_thread_context
0xffffffb0a3743970 : 0xffffff8011764a25 com.apple.driver.watchdog : __ZN10IOWatchdog14userspacePanicEP8OSObjectPvP25IOExternalMethodArguments.cold.1 + 0x27
0xffffffb0a3743980 : 0xffffff8011764678 com.apple.driver.watchdog : __ZN10IOWatchdog35userspaceDisableUserspaceMonitoringEP8OSObjectPvP25IOExternalMethodArguments
0xffffffb0a37439a0 : 0xffffff800ec4628e mach_kernel : __ZN12IOUserClient14externalMethodEjP25IOExternalMethodArgumentsP24IOExternalMethodDispatchP8OSObjectPv + 0x1de
0xffffffb0a37439f0 : 0xffffff8011763ab4 com.apple.driver.watchdog : __ZN20IOWatchdogUserClient14externalMethodEjP25IOExternalMethodArgumentsP24IOExternalMethodDispatchP8OSObjectPv + 0x7c
0xffffffb0a3743b20 : 0xffffff800ec5045b mach_kernel : _is_io_connect_method + 0x35b
0xffffffb0a3743c80 : 0xffffff800e5a8e51 mach_kernel : _iokit_server_routine + 0x4d81
0xffffffb0a3743d90 : 0xffffff800e4c0147 mach_kernel : _ipc_kobject_server + 0x337
0xffffffb0a3743e00 : 0xffffff800e496905 mach_kernel : _ipc_kmsg_send + 0x115
0xffffffb0a3743e60 : 0xffffff800e4ae062 mach_kernel : _mach_msg_overwrite_trap + 0x2d2
0xffffffb0a3743ef0 : 0xffffff800e5d1fc3 mach_kernel : _mach_call_munger64 + 0x273
0xffffffb0a3743fa0 : 0xffffff800e460216 mach_kernel : _hndl_mach_scall64 + 0x16
Kernel Extensions in backtrace:
com.apple.driver.watchdog(1.0)[2C1307C5-FD71-3802-8D68-A67DB24BCB4A]@0xffffff8011763000->0xffffff8011764fff

Process name corresponding to current thread: watchdogd
Boot args: alcid=1 keepsyms=1 chunklist-security-epoch=0 -chunklist-no-rev2-dev

Mac OS version:
20D80

Kernel version:
Darwin Kernel Version 20.3.0: Thu Jan 21 00:07:06 PST 2021; root:xnu-7195.81.3~1/RELEASE_X86_64
Kernel UUID: C86236B2-4976-3542-80CA-74A6B8B4BA03
KernelCache slide: 0x000000000e200000
KernelCache base: 0xffffff800e400000
Kernel slide: 0x000000000e210000
Kernel text base: 0xffffff800e410000
__HIB text base: 0xffffff800e300000
System model name: iMacPro1,1 (Mac-7BA5B2D9E42DDD94)
System shutdown begun: NO
Panic diags file available: YES (0x0)
Hibernation exit count: 0

System uptime in nanoseconds: 3678529331888
Last Sleep: absolute base_tsc base_nano
Uptime : 0x00000358796f2502
Sleep : 0x0000000000000000 0x0000000000000000 0x0000000000000000
Wake : 0x0000000000000000 0x00000016109dfa50 0x0000000000000000

 

[ibruno]

Hi, did you ever find the cause or fins a way to stop these?

I upgraded to Big Sur 11.4 from 11.2.1 earlier this month, and although I can't be sure, I think that's when I started having the same type of crashes. I definitely first noticed it about a week ago, which was about a week after I had upgraded to 11.4

Any info on how to stop these crashes would be appreciated.

Thanks,

Bruno