SYSTEMD-HIBERNATE-RESUME.SERVICE(8)	      systemd-hibernate-resume.service

NAME
       systemd-hibernate-resume.service, systemd-hibernate-clear.service,
       systemd-hibernate-resume - Resume from hibernation

SYNOPSIS
       systemd-hibernate-resume.service

       systemd-hibernate-clear.service

       /usr/lib/systemd/systemd-hibernate-resume

DESCRIPTION
       systemd-hibernate-resume.service initiates the resume from hibernation.

       systemd-hibernate-resume only supports the in-kernel hibernation
       implementation, see Swap suspend[1]. Internally, it works by writing
       the major:minor of selected device node to /sys/power/resume, along
       with the offset in memory pages (/sys/power/resume_offset) if
       supported.

       The resume device node is either passed directly through arguments, or
       automatically acquired from kernel command line options and/or
       HibernateLocation EFI variable. The latter will normally be cleared by
       systemd-hibernate-resume.service on resumption. If a stale variable is
       detected, it would be cleared by systemd-hibernate-clear.service.

       Failing to initiate a resume is not an error condition. It may mean
       that there was no resume image (e. g. if the system has been simply
       powered off and not hibernated). In such cases, the boot is ordinarily
       continued.

SEE ALSO
       systemd(1), systemd-hibernate-resume-generator(8)

NOTES
	1. Swap suspend
	   https://docs.kernel.org/power/swsusp.html

systemd 258				   SYSTEMD-HIBERNATE-RESUME.SERVICE(8)