Systemd services to hibernate after 2 hours of suspend. This is to increase security and battery usage while preserving a fast resume in working hours. Put files in /etc/systemd/system/

suspend-to-hibernate.service

[Unit]
Description=Delayed hibernation trigger
Documentation=https://bbs.archlinux.org/viewtopic.php?pid=1420279#p1420279
Documentation=https://wiki.archlinux.org/index.php/Power_management
Conflicts=hibernate.target hybrid-suspend.target
Before=sleep.target
StopWhenUnneeded=true

[Service]
Type=oneshot
RemainAfterExit=yes
Environment="WAKEALARM=/sys/class/rtc/rtc0/wakealarm"
Environment="SLEEPLENGTH=+2hour"
ExecStart=-/usr/bin/sh -c 'echo -n "alarm set for "; date +%%s -d$SLEEPLENGTH | tee $WAKEALARM'
ExecStop=-/usr/bin/sh -c '\
  alarm=$(cat $WAKEALARM); \
  now=$(date +%%s); \
  if [ -z "$alarm" ] || [ "$now" -ge "$alarm" ]; then \
     echo "hibernate triggered"; \
     systemctl hibernate; \
  else \
     echo "normal wakeup"; \
  fi; \
  echo 0 > $WAKEALARM; \
'

[Install]
WantedBy=sleep.target 

suspend@.service

[Unit]
Description=User suspend actions
Before=sleep.target

[Service]
Type=forking
User=atmoz
Environment=DISPLAY=:0
ExecStart=i3lock
ExecStartPost=/usr/bin/sleep 1

[Install]
WantedBy=sleep.target

unlock-after-hibernate.service

# Kill screen locker to avoid typing password two times.
# This only makes sense if you use BIOS password
# or Self-encrypting drive (SED).

[Unit]
Description=Unlock screen after hibernate
After=hibernate.target

[Service]
Type=simple
ExecStart=-/usr/bin/killall i3lock

[Install]
WantedBy=hibernate.target