Description of problem: When Secure Boot is on, /sys/power/disk is disabled. Thus, hibernate and hybrid-sleep won't work. Version-Release number of selected component (if applicable): 4.13.13-300.fc27.x86_64 How reproducible: Always Steps to Reproduce: 1. Turn on Secure Boot 2. systemctl hibernate or systemctl hybrid-sleep 3. Actual results: systemctl hibernate Failed to hibernate system via logind: Sleep verb not supported systemctl hybrid-sleep Failed to put system into hybrid sleep via logind: Sleep verb not supported Expected results: The system hibernates or hybrid sleeps Additional info:
This is intended behavior, per commit text on one of the patches "There is currently no way to verify the resume image when returning from hibernate. This might compromise the signed modules trust model, so until we can work with signed hibernate images we disable it when the kernel is locked down."
So what about the case when an OPAL hard disk is encrypted using the system firmware?