fix readme and GUI notifications

README.md

@@ -51,6 +51,7 @@ For basic usage:
 - `Python` 3.3+ (not tested with previous)
 
 To show GUI notifications:
+- [notification server](https://wiki.archlinux.org/index.php/Desktop_notifications#Notification_servers) (most of desktop environments use their own implementations)
 - `libnotify` (Fedora, Arch Linux) or `libnotify-bin` (Debian GNU/Linux, Ubuntu)
 - `sudo` if nohang started with UID=0
 

nohang_notify_helper

@@ -11,7 +11,7 @@ if len(argv) < 2 or argv[1] == "-h" or argv[1] == "--help":
     print('Usage: ./nohang_notify_helper "title" "body"')
     exit(1)
 
-wait_time = 12
+wait_time = 10
 
 display_env = 'DISPLAY='
 dbus_env = 'DBUS_SESSION_BUS_ADDRESS='
@@ -99,13 +99,17 @@ list_with_envs = root_notify_env()
 if len(list_with_envs) > 0:
     # iterating over logged-in users
     for i in list_with_envs:
-        username, dbus_env = i[0], i[2]
+        username, display_env, dbus_env = i[0], i[1], i[2]
+        display_tuple = display_env.partition('=')
         dbus_tuple = dbus_env.partition('=')
-        dbus_key, dbus_value = dbus_tuple[0], dbus_tuple[2]
+        display_value = display_tuple[2]
+        dbus_value = dbus_tuple[2]
 
         with Popen([
             'sudo', '-u', username,
-            'env', 'DBUS_SESSION_BUS_ADDRESS=' + dbus_value,
+            'env',
+            'DISPLAY=' + display_value,
+            'DBUS_SESSION_BUS_ADDRESS=' + dbus_value,
             'notify-send', '--icon=dialog-warning', argv[1], argv[2]
         ]) as proc:
             try: