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systemd-hibernate-resume.service(8) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | NOTES | COLOPHON 

SYSTEM...SERVICE(8)  systemd-hibernate-resume.service SYSTEM...SERVICE(8)

NAME         top

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

SYNOPSIS         top

       systemd-hibernate-resume.service

       systemd-hibernate-clear.service

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

DESCRIPTION         top

       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         top

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

NOTES         top

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

COLOPHON         top

       This page is part of the systemd (systemd system and service
       manager) project.  Information about the project can be found at
       ⟨http://www.freedesktop.org/wiki/Software/systemd⟩.  If you have a
       bug report for this manual page, see
       ⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.
       This page was obtained from the project's upstream Git repository
       ⟨https://github.com/systemd/systemd.git⟩ on 2025-08-11.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2025-08-11.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there is
       a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

systemd 258~rc2                                       SYSTEM...SERVICE(8)

Pages that refer to this page: systemd.directives(7),  systemd.index(7),  systemd-hibernate-resume-generator(8)

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