Sleep Transition timed out - Dell Inspiron Mini tower OpenCore 0.6.4 Big Sur 11.1

[mister7000]

Hello everyone...

After help from the forums here i have been able to successfully install my Big Sur system.

However, twice now when trying to come back from sleep i had to shut shown and when i powered back up got error message:

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panic(cpu 0 caller 0xffffff8019e89136): Sleep transition timed out after 180 seconds while calling power state change callbacks.
Failure code:: 0x00000010 00000014

Backtrace (CPU 0), Frame : Return Address
0xffffffc12b273880 : 0xffffff80196b9aed mach_kernel : _handle_debugger_trap + 0x3dd
0xffffffc12b2738d0 : 0xffffff80197fc6e3 mach_kernel : _kdp_i386_trap + 0x143
0xffffffc12b273910 : 0xffffff80197ecd1a mach_kernel : _kernel_trap + 0x55a
0xffffffc12b273960 : 0xffffff801965ea2f mach_kernel : _return_from_trap + 0xff
0xffffffc12b273980 : 0xffffff80196b938d mach_kernel : _DebuggerTrapWithState + 0xad
0xffffffc12b273aa0 : 0xffffff80196b9678 mach_kernel : _panic_trap_to_debugger + 0x268
0xffffffc12b273b10 : 0xffffff8019ebe434 mach_kernel : _panic_with_thread_context
0xffffffc12b273b80 : 0xffffff8019e89136 mach_kernel : __ZN14IOPMrootDomain13takeStackshotEb + 0xb46
0xffffffc12b273e60 : 0xffffff8019dfbe4a mach_kernel : __ZN9IOService22watchdog_timer_expiredEPvS0_ + 0x2a
0xffffffc12b273e80 : 0xffffff80196fe6b5 mach_kernel : _thread_call_delayed_timer + 0x4a5
0xffffffc12b273ef0 : 0xffffff80196ff5c4 mach_kernel : _thread_call_delayed_timer + 0x13b4
0xffffffc12b273fa0 : 0xffffff801965e13e mach_kernel : _call_continuation + 0x2e

Process name corresponding to current thread: kernel_task
Boot args: -v keepsyms=1 debug=0x100 chunklist-security-epoch=0 -chunklist-no-rev2-dev

Mac OS version:
20C69

Kernel version:
Darwin Kernel Version 20.2.0: Wed Dec 2 20:39:59 PST 2020; root:xnu-7195.60.75~1/RELEASE_X86_64
Kernel UUID: 82E2050C-5936-3D24-AD3B-EC4EC5C09E11
KernelCache slide: 0x0000000019400000
KernelCache base: 0xffffff8019600000
Kernel slide: 0x0000000019410000
Kernel text base: 0xffffff8019610000
__HIB text base: 0xffffff8019500000
System model name: iMac18,3 (Mac-BE088AF8C5EB4FA2)
System shutdown begun: NO
Panic diags file available: YES (0x0)

Hibernation exit count: 0

System uptime in nanoseconds: 17281790502281
Last Sleep: absolute base_tsc base_nano
Uptime : 0x00000fb7bafbe818
Sleep : 0x0000084ce49fd3fc 0x00000000886b0534 0x000008400f504f16
Wake : 0x0000084ce8836531 0x00000000882713c4 0x0000084ce52f4459

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Any ideas ?

Thanks

 

[mister7000]

Hello everyone.. i got the sleep panic again..

can anyone help me understand what the error message means ?

 

[lisai9093]

I think it is related to the optic drive. When I remove the optic drive physically, no panic happens.