Testing suspend-then-hibernate

home-manager/hosts/nixos-laptop/desktops/hyprland/gruvbox/hyprland-conf.nix

@@ -264,7 +264,7 @@
           swayidle -w \
               timeout 120       'swaylock -f' \
               timeout 180       'hyprctl dispatch dpms off' \
-              timeout 300       'systemctl suspend' \
+              timeout 300       'systemctl suspend-then-hibernate' \
                    resume       'hyprctl dispatch dpms on' \
                    before-sleep 'swaylock -f' \
                    before-sleep 'playerctl pause'

nixos/common/desktops/hyprland/default.nix

@@ -46,11 +46,19 @@
     NIXOS_OZONE_WL = "1";
   };
 
+  # https://www.freedesktop.org/software/systemd/man/logind.conf.html 
   services.logind.extraConfig = ''
     IdleActionSec=900
     IdleAction=suspend-then-hibernate
+    HandleLidSwitch=suspend-then-hibernate
+    HandleLidSwitchDocked=ignore
+    HandleLidSwitchExternalPower=suspend
   '';
 
+  # https://www.systutorials.com/docs/linux/man/5-systemd-sleep.conf/ 
+  # HibernateDelaySec is the amount of time the
+  # system sleeps before entering hibernate when
+  # using suspend-then-hibernate
   systemd.sleep.extraConfig = ''
     AllowSuspend = yes
     AllowHibernate = yes