Sleep Wake failure in EFI Failure code:: 0xffffffff 0x0000001f Please IGNORE the below stackshot ================================================================ Date/Time: 2020-05-20 21:43:17 -0500 OS Version: ??? ??? (Build ???) Architecture: x86_64 Report Version: 29 Data Source: Stackshots Shared Cache: 0x2e000 A76E0C06-67FB-3A20-9561-8A5F9D5A3F8E Event: Sleep Wake Failure Duration: 0.00s Steps: 1 Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev Time Awake Since Boot: 35s Process: swd [331] Architecture: x86_64 Footprint: 424 KB Start time: 2020-05-20 21:43:17 -0500 End time: 2020-05-20 21:43:17 -0500 Num samples: 1 (1) Thread 0xb15 1 sample (1) priority 4 (base 4) 1 start + 1 (libdyld.dylib + 109769) [0x7fff66f9ccc9] 1 1 ??? [0x1076b2454] 1 1 ??? [0x1076b21dd] 1 1 __stack_snapshot_with_config + 10 (libsystem_kernel.dylib + 135862) [0x7fff670fe2b6] 1 *1 ??? [0xffffff80002c8206] 1 *1 ??? [0xffffff80009875f7] 1 *1 ??? [0xffffff80008a0001] 1 *1 ??? [0xffffff80002eb9e7] (running) 1 Binary Images: 0x7fff66f82000 - 0x7fff66fb8fff libdyld.dylib (750.5) /usr/lib/system/libdyld.dylib 0x7fff670dd000 - 0x7fff67109fff libsystem_kernel.dylib (6153.101.6) /usr/lib/system/libsystem_kernel.dylib Model: MacBookAir8,1, BootROM 1037.100.362.0.0 (iBridge: 17.16.14281.0.0,0), 2 processors, Dual-Core Intel Core i5, 1.6 GHz, 16 GB, SMC Graphics: kHW_IntelUHDGraphics617Item, Intel UHD Graphics 617, spdisplays_builtin Graphics: Radeon RX 570, Radeon RX 570, spdisplays_pcie_device, 8 GB Memory Module: BANK 0/DIMM0, 8 GB, LPDDR3, 2133 MHz, 0x80AD, 0x483943434E4E4E4641474D4C4C522D4E5644 Memory Module: BANK 1/DIMM0, 8 GB, LPDDR3, 2133 MHz, 0x80AD, 0x483943434E4E4E4641474D4C4C522D4E5644 AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x843), wl0: Feb 28 2020 15:31:19 version 9.30.357.35.32.5.42 FWID 01-9d05982a Bluetooth: Version 7.0.4f6, 3 services, 27 devices, 1 incoming serial ports Network Service: Thunderbolt Ethernet Slot 1, Ethernet, en5 Network Service: Wi-Fi, AirPort, en0 PCI Card: Radeon RX 570, sppci_displaycontroller, Thunderbolt@130,0,0 PCI Card: pci1002,aaf0, sppci_audiodevice, Thunderbolt@130,0,1 PCI Card: ethernet, sppci_ethernet, Thunderbolt@134,0,0 PCI Card: pci1b21,1242, sppci_usbxhci, Thunderbolt@133,0,0 PCI Card: pci8086,15c1, sppci_usbxhci, Thunderbolt@135,0,0 USB Device: USB 3.0 Bus USB Device: USB 3.1 Bus USB Device: USB 3.1 Bus USB Device: USB2134B USB Device: USB2134B USB Device: UP3216Q_0B27_141021v1 USB Device: USB5534B USB Device: StoreJet Transcend USB Device: USB5534B USB Device: USB3.0 Card Reader USB Device: Apple T2 Bus USB Device: Apple Internal Keyboard / Trackpad USB Device: Headset USB Device: Ambient Light Sensor USB Device: FaceTime HD Camera (Built-in) USB Device: Apple T2 Controller Thunderbolt Bus: MacBook Air, Apple Inc., 47.4 Thunderbolt Device: TBX-240FU, TUL, 3, 35.1