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edydh Author

Level 1

9 points

Catalina Version 10.15.4 "Your computer was restarted because of a problem"

panic(cpu 2 caller 0xffffff8017c91b2c): Sleep transition timed out after 180 seconds while calling power state change callbacks. Suspected bundle: com.apple.iokit.IOGraphicsFamily. Thread 0x302c1.

specified thread

(CPU 2), Frame Return Address

0xffffff8208fdb900 : 0xffffff80176471e8

0xffffff8208fe3bc0 : 0xffffff80175433f1

0xffffff8208fe3c30 : 0xffffff8017541c2f

0xffffff8208fe3c80 : 0xffffff80176442e9

0xffffff8208fe3cc0 : 0xffffff8017643b4b

0xffffff8208fe3cf0 : 0xffffff7f9b199ced

0xffffff8208fe3d20 : 0xffffff7f9b1b2fa3

0xffffff8208fe3d30 : 0xffffff7f9b19ccb9

0xffffff8208fe3dc0 : 0xffffff7f9b1a8eee

0xffffff8208fe3e00 : 0xffffff8017c152ea

0xffffff8208fe3ea0 : 0xffffff8017c14c14

0xffffff8208fe3ec0 : 0xffffff8017563545

0xffffff8208fe3f40 : 0xffffff8017563071

0xffffff8208fe3fa0 : 0xffffff80174c713e

Kernel Extensions in :

com.apple.iokit.IOGraphicsFamily(575.1)[D47CA481-C5E5-3F03-9B04-6634DF5F3121]@0xffffff7f9b191000->0xffffff7f9b1e1fff

: com.apple.iokit.IOPCIFamily(2.9)[1B1F3BBB-9212-3CF9-94F8-8FEF0D3ACEC4]@0xffffff7f97f11000

BSD process name corresponding to current thread: kernel_task

Boot : -security-epoch=0 --no-rev2-dev

Mac OS version:

19E287

MacBook Pro 16", macOS 10.15

Posted on Apr 17, 2020 10:10 AM

Best reply

Barney-15E

Level 10

112,944 points

Posted on Apr 17, 2020 12:24 PM

There are several long threads with this topic.

One of the most recent 'fixes' was to reset SMC and NVRAM. The NVRAM reset article has a link to the SMC reset procedures.

I have no idea if that will help you.

The current workaround was to disable PowerNap in energy system preferences. Maybe turn off putting external drives to sleep, also.

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Catalina Version 10.15.4 "Your computer was restarted because of a problem"

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