Xlib display error now catched, and fixed window size when no window manager

web-greeter/browser/browser.py

@@ -52,7 +52,7 @@ from browser.interceptor import QtUrlRequestInterceptor
 from logger import logger
 from config import web_greeter_config
 from bridge import Greeter, Config, ThemeUtils
-from utils.screensaver import reset_screensaver, set_screensaver
+from utils.screensaver import reset_screensaver, set_screensaver, init_display
 import resources
 
 # Typing Helpers
@@ -121,6 +121,11 @@ class Application:
         if web_greeter_config["app"]["frame"]:
             self._init_menu_bar()
 
+        screen_size = self.desktop.screen().size()
+
+        self.window.setBaseSize(screen_size)
+        self.window.resize(screen_size)
+
         state = self.states['NORMAL']
         if web_greeter_config["app"]["fullscreen"]:
             state = self.states["FULLSCREEN"]
@@ -132,6 +137,8 @@ class Application:
 
         self.window.setCursor(Qt.CursorShape.ArrowCursor)
 
+        init_display()
+
         timeout = web_greeter_config["config"]["greeter"]["screensaver_timeout"]
         set_screensaver(timeout or 300)
 

web-greeter/utils/screensaver.py

@@ -3,12 +3,21 @@ from Xlib.display import Display
 
 saved_data: dict[str, int]
 saved = False
+available = False
 
-display = Display()
+display = None
+
+def init_display():
+    global display, available
+    try:
+        display = Display()
+        available = True
+    except Exception as err:
+        logger.error(f"Xlib error: {err}")
 
 def set_screensaver(timeout: int):
-    global saved_data, saved
-    if saved:
+    global saved_data, saved, available, display
+    if saved or not available:
         return
     display.sync()
     data: dict[str, int] = display.get_screen_saver()._data or {}
@@ -20,8 +29,8 @@ def set_screensaver(timeout: int):
     logger.debug("Screensaver timeout set")
 
 def reset_screensaver():
-    global saved_data, saved
-    if not saved:
+    global saved_data, saved, available, display
+    if not saved or not available:
         return
     display.sync()
     display.set_screen_saver(saved_data["timeout"], saved_data["interval"], saved_data["prefer_blanking"], saved_data["allow_exposures"])