Switched to using systemd hibernate (testing).

i3/config

@@ -314,6 +314,7 @@ for_window [title="MuseScore: Play Panel"] floating enable
 for_window [title="alsamixer"] floating enable border pixel 1
 for_window [class="(?i)^timeshift-gtk$"] floating disable
 for_window [class="(?i)^gnome-calculator$"] floating disable
+for_window [class="(?i)^workspacesclient$"] floating disable
 
 # Application shortcuts
 bindsym $mod+Return exec i3-sensible-terminal
@@ -351,14 +352,14 @@ bindsym $mod+0 mode "$mode_system"
 set $mode_system (l)ock, (e)xit, switch_(u)ser, (Shift+s)uspend, (s)uspend+lock, (h)ibernate, (Shift+h)ibernate+lock, (r)eboot, shut(d)own
 mode "$mode_system" {
     bindsym l exec --no-startup-id i3exit lock, mode "default"
-    bindsym Shift+s exec --no-startup-id i3exit suspend, mode "default"
-    bindsym s exec --no-startup-id "i3exit lock; i3exit suspend", mode "default"
-    bindsym u exec --no-startup-id i3exit switch_user, mode "default"
-    bindsym e exec --no-startup-id i3exit logout, mode "default"
-    bindsym h exec --no-startup-id i3exit hibernate, mode "default"
-    bindsym Shift+h exec --no-startup-id "i3exit lock; i3exit hibernate", mode "default"
-    bindsym r exec --no-startup-id i3exit reboot, mode "default"
-    bindsym d exec --no-startup-id i3exit shutdown, mode "default"
+    bindsym Shift+s exec --no-startup-id "systemctl suspend", mode "default"
+    bindsym s exec --no-startup-id "i3exit lock; systemctl suspend", mode "default"
+    bindsym u exec --no-startup-id "i3exit switch_user", mode "default"
+    bindsym e exec --no-startup-id "i3exit logout", mode "default"
+    bindsym h exec --no-startup-id "systemctl hibernate", mode "default"
+    bindsym Shift+h exec --no-startup-id "i3exit lock; systemctl hibernate", mode "default"
+    bindsym r exec --no-startup-id "i3exit reboot", mode "default"
+    bindsym d exec --no-startup-id "i3exit shutdown", mode "default"
 
     # exit system mode: "Enter" or "Escape"
     bindsym Return mode "default"