SYSTEMD-SLEEP.CONF(5) systemd-sleep.conf SYSTEMD-SLEEP.CONF(5) (NAME) systemd-sleep.conf - systemd (SYNOPSIS) /etc/systemd/sleep.conf /run/systemd/sleep.conf /usr/lib/systemd/sleep.conf /etc/systemd/sleep.conf.d/*.conf /run/systemd/sleep.conf.d/*.conf /usr/lib/systemd/sleep.conf.d/*.conf (DESCRIPTION) systemd (power-saving) : suspend . suspend standby freeze . 203. hibernate . (hibernation) . 203. hybrid-sleep . suspend-to-both . 203. suspend-then-hibernate ( RAM ). ( ) . . HibernateDelaySec= . "2h" . (ACPI _BTP) . HibernateDelaySec= : . ACPI _BTP / . . SuspendEstimationSec= . 239. /sys/power/disk /sys/power/state systemd-sleep(8) systemd(1) . systemd.syntax(7) . (CONFIGURATION DIRECTORIES AND PRECEDENCE) . : /etc/systemd/, /run/systemd/, /usr/local/lib/systemd/ [1], /usr/lib/systemd/. . (drop-ins) . ( /etc/ /usr/ ) . : /usr/lib/systemd/*.conf.d/, /usr/local/lib/systemd/*.conf.d/, /etc/systemd/*.conf.d/. (override) . *.conf.d/ . . /usr/ . /etc/ . . . . . 10-40 /usr/ 60-90 /etc/ /run/ . (symlink) /dev/null /etc/ . (OPTIONS) [Sleep] /etc/systemd/sleep.conf sleep.conf.d : AllowSuspend=, AllowHibernation=, AllowHybridSleep=, AllowSuspendThenHibernate= ( ). . AllowHibernation=no AllowSuspend=no AllowSuspendThenHibernate=no AllowHybridSleep=no . AllowSuspendThenHibernate=yes AllowHybridSleep=yes . 240. SuspendState= /sys/power/state systemd-suspend.service(8) . . . . ( cat /sys/power/state ). Basic sysfs Interfaces for System Suspend and Hibernation[2] . systemd-suspend-then-hibernate.service(8) . 203. HibernateMode= /sys/power/disk systemd-hibernate.service(8) . . . . ( cat /sys/power/disk ). Basic sysfs Interfaces for System Suspend and Hibernation[2] . systemd-suspend-then-hibernate.service(8) HibernateMode= . 203. MemorySleepMode= /sys/power/mem_sleep SuspendState=mem hybrid-sleep . . . . mem_sleep_default= . ( cat /sys/power/mem_sleep ). Basic sysfs Interfaces for System Suspend and Hibernation[2] . 256. HibernateDelaySec= . systemd- suspend-then-hibernate.service(8) . / suspend-then-hibernate . 239. HibernateOnACPower= (AC) . systemd-suspend-then-hibernate.service(8) HibernateDelaySec= . HibernateDelaySec= AC . . 257. SuspendEstimationSec= RTC . systemd-suspend-then- hibernate.service(8) . / suspend-then-hibernate . 253. : (EXAMPLE: FREEZE) : "freeze" 3.9 systemctl suspend : [Sleep] SuspendState=freeze (SEE ALSO) systemd-sleep(8), systemd-suspend.service(8), systemd- hibernate.service(8), systemd-hybrid-sleep.service(8), systemd-suspend- then-hibernate.service(8), systemd(1), systemd.directives(7) (NOTES) 1. . /usr/local/ . 2. Basic sysfs Interfaces for System Suspend and Hibernation https://docs.kernel.org/admin-guide/pm/sleep-states.html#basic- sysfs-interfaces-for-system-suspend-and-hibernation systemd 261.2 SYSTEMD-SLEEP.CONF(5)