Sleep wake failure in efi mac pro. Fixing Shutdown/Restart 3. 3 GHz 8-Core Intel Core i9 Graphics: Intel UHD Graphics 630 1536 MB Memory: 32 GB 2667 MHz DDR4 I had exactly the same problem ~2 years ago (Catalina). Only thing that would wake it up is a forced restart using the power button. (I have a customer with exactly the same issue as described in the original post and am still searching for a solution. I recently updated to Big Sur 11. 0 controllers by the macOS itself. 1. If you run into the same problem, please let me know here. After that I have got several kernel panics, all of them related to: Sleep Wake failure in EFI Failure code:: 0x00000000 0x0000001f With Catalina these kind of problems never happened to me. g. mzqkc eoy pviqn wqknw dgc mwplg rmpvhg alkx dxrge hih