How to fix Sleep wake failure in EFI on iMac?

using iMac late 2015 and getting constant sleep wake failure in EFI notices. Cant fix and have tried all i know

[Edited by Moderator]

Posted on Sep 2, 2021 10:46 AM

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Sleep Wake failure in EFI Nothing help with this. Mac just go to sleep and can't wake up. Every time when I close it or stay a long time MacBook sleeping and all. I try to reset SMB, change the time for hibernation, turn off the hibernation it don't working. I even changed the iOS BTW Catalina now 10.15.7. Could anybody know what to do. Thank You. Sleep Wake failure in EFI Failure code:: 0xffffffff 0x0000001f Please IGNORE the below stackshot ================================================================ Date/Time: 2022-02-20 13:27:06 +0500 OS Version: ??? ??? (Build ???) Architecture: x86_64 Report Version: 29 Data Source: Stackshots Shared Cache: 0x7601000 84074C31-45F6-3D7A-B8D9-E79992E371E8 Event: Sleep Wake Failure Duration: 0.00s Steps: 1 Time Awake Since Boot: 15s Process: swd [570] Architecture: x86_64 Footprint: 404 KB Start time: 2022-02-20 13:27:06 +0500 End time: 2022-02-20 13:27:06 +0500 Num samples: 1 (1) Thread 0x997 1 sample (1) priority 4 (base 4) <thread QoS background (requested background), thread darwinbg, process darwinbg, IO tier 2> 1 start + 1 (libdyld.dylib + 109769) [0x7fff6e615cc9] 1 1 ??? [0x10b177454] 1 1 ??? [0x10b1771dd] 1 1 __stack_snapshot_with_config + 10 (libsystem_kernel.dylib + 135862) [0x7fff6e7772b6] 1 *1 ??? [0xffffff80002c3206] 1 *1 ??? [0xffffff8000983c67] 1 *1 ??? [0xffffff800089c781] 1 *1 ??? [0xffffff80002e69b7] (running) 1 Binary Images: 0x7fff6e5fb000 - 0x7fff6e631fff libdyld.dylib (750.7) <AB99C9EE-7127-3451-89AB-339F8F2CEE61> /usr/lib/system/libdyld.dylib 0x7fff6e756000 - 0x7fff6e782fff libsystem_kernel.dylib (6153.141.51) <E04FE0AC-9A46-3270-933C-3EBCB05E209B> /usr/lib/system/libsystem_kernel.dylib Model: MacBookPro9,2, BootROM 425.0.0.0.0, 2 processors, Dual-Core Intel Core i7, 2,9 GHz, 16 GB, SMC 2.2f44 Graphics: kHW_IntelHD4000Item, Intel HD Graphics 4000, spdisplays_builtin Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x0198, 0x393955353432382D3036332E4130304C4620 Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x0198, 0x393955353432382D3036332E4130304C4620 AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF5), Broadcom BCM43xx 1.0 (7.21.190.33 AirPortDriverBrcm4360-1601.1) Bluetooth: Version 7.0.6f8, 3 services, 27 devices, 1 incoming serial ports Network Service: Wi-Fi, AirPort, en1 Serial ATA Device: CT500BX100SSD1, 500,11 GB USB Device: USB 3.0 Bus USB Device: USB 2.0 Bus USB Device: Hub USB Device: FaceTime HD Camera (Built-in) USB Device: USB 2.0 Bus USB Device: Hub USB Device: Hub USB Device: Apple Internal Keyboard / Trackpad USB Device: IR Receiver USB Device: BRCM20702 Hub USB Device: Bluetooth USB Host Controller Thunderbolt Bus: MacBook Pro, Apple Inc., 25.1
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1 reply

hcsitas

Level 6

13,964 points

Sep 2, 2021 12:08 PM in response to tmokok2

Try disabling sleep during regular use. Check “Prevent…” in Energy Settings. Shut down for long absences.

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How to fix Sleep wake failure in EFI on iMac?

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