Sleep Wake failure in EFI Failure code:: 0xffffffff 0x0000001f Please IGNORE the below stackshot ================================================================ Date/Time: 2021-02-02 17:00:14 +0100 OS Version: ??? ??? (Build ???) Architecture: x86_64 Report Version: 29 Data Source: Stackshots Shared Cache: 0x4dce000 D083A14C-3D18-3FDF-A549-D86311A5CD7E Event: Sleep Wake Failure Duration: 0.00s Steps: 1 Boot args: dart=0 keepsyms=1 debug=0x100 darkwake=8 Time Awake Since Boot: 16s Process: swd [259] Architecture: x86_64 Footprint: 424 KB Start time: 2021-02-02 17:00:14 +0100 End time: 2021-02-02 17:00:14 +0100 Num samples: 1 (1) Thread 0x787 1 sample (1) priority 4 (base 4) 1 start + 1 (libdyld.dylib + 109769) [0x7fff6bdf1cc9] 1 1 ??? [0x10a5a1454] 1 1 ??? [0x10a5a11dd] 1 1 __stack_snapshot_with_config + 10 (libsystem_kernel.dylib + 135862) [0x7fff6bf532b6] 1 *1 ??? [0xffffff80002c1206] 1 *1 ??? [0xffffff8000984be7] 1 *1 ??? [0xffffff800089d771] 1 *1 ??? [0xffffff80002e49e7] (running) 1 Binary Images: 0x7fff6bdd7000 - 0x7fff6be0dfff libdyld.dylib (750.6) <789A18C2-8AC7-3C88-813D-CD674376585D> /usr/lib/system/libdyld.dylib 0x7fff6bf32000 - 0x7fff6bf5efff libsystem_kernel.dylib (6153.141.2) /usr/lib/system/libsystem_kernel.dylib