Set dmps off

mbetterclient/qt_player/player.py

@@ -3370,7 +3370,7 @@ class QtVideoPlayer(QObject):
             logger.error(f"Failed to force window display: {e}")
     
     def _configure_linux_system(self):
-        """Configure Linux-specific system settings - TEMPORARILY DISABLED FOR TESTING"""
+        """Configure Linux-specific system settings"""
         import platform
         import os
 
@@ -3405,6 +3405,28 @@ class QtVideoPlayer(QObject):
             if not os.environ.get('DISPLAY'):
                 logger.warning("No DISPLAY environment variable - may be running headless")
                 os.environ['QT_QPA_PLATFORM'] = 'offscreen'
+            else:
+                # Disable screensaver and DPMS to keep display always on
+                try:
+                    import subprocess
+                    logger.info("Disabling screensaver and DPMS to keep display always on")
+
+                    # Disable screensaver
+                    result_s = subprocess.run(['xset', 's', 'off'], capture_output=True, text=True, timeout=5)
+                    if result_s.returncode == 0:
+                        logger.info("Screensaver disabled successfully")
+                    else:
+                        logger.warning(f"Failed to disable screensaver: {result_s.stderr}")
+
+                    # Disable DPMS (Display Power Management Signaling)
+                    result_dpms = subprocess.run(['xset', '-dpms'], capture_output=True, text=True, timeout=5)
+                    if result_dpms.returncode == 0:
+                        logger.info("DPMS disabled successfully")
+                    else:
+                        logger.warning(f"Failed to disable DPMS: {result_dpms.stderr}")
+
+                except (subprocess.TimeoutExpired, subprocess.SubprocessError, FileNotFoundError) as e:
+                    logger.warning(f"Could not disable screensaver/DPMS (xset not available or failed): {e}")
 
         except Exception as e:
             logger.warning(f"Linux system configuration warning: {e}")