SYSTEMD-SLEEP.CONF(5) systemd-sleep.conf SYSTEMD-SLEEP.CONF(5) systemd-sleep.conf, sleep.conf.d - /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 systemd : suspend . . 203. hibernate . . 203. hybrid-sleep . . 203. suspend-then-hibernate ( RAM). ( 5%) . . HibernateDelaySec=. "2h". (ACPI _BTP) . HibernateDelaySec= : . ACPI _BTP / . . SuspendEstimationSec= . 239. /sys/power/disk /sys/power/state systemd-sleep(8) systemd(1) . systemd.syntax(7) . . : /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/. . *.conf.d/ . . (drop-ins) /usr/. /etc/ . . . . . 10-40 /usr/ 60-90 /etc/ /run/ . /dev/null /etc/ . [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 ). sysfs [2] . systemd-suspend-then-hibernate.service(8) . 203. HibernateMode= /sys/power/disk systemd-hibernate.service(8). . . . ( cat /sys/power/disk ). sysfs [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 ). sysfs [2] . 256. HibernateDelaySec= . systemd-suspend-then-hibernate.service(8). suspend-then-hibernate / . 239. HibernateOnACPower= . systemd-suspend-then-hibernate.service(8) HibernateDelaySec=. HibernateDelaySec= . . 257. SuspendEstimationSec= RTC . systemd-suspend-then-hibernate.service(8). suspend-then-hibernate / . 253. : : "" 3.9 systemctl suspend [Sleep] SuspendState=freeze 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) 1. . /usr/local/ . 2. sysfs https://docs.kernel.org/admin-guide/pm/sleep-states.html#basic-sysfs-interfaces-for-system-suspend-and-hibernation 3 . . : . systemd 260.2 SYSTEMD-SLEEP.CONF(5)