Fenrir was not cleaning up after itself properly. Fixed several possible stale file bugs and hopefully this problem is now gone.

src/fenrir

@@ -106,14 +106,17 @@ def run_fenrir():
         fenrirApp.proceed()
     except Exception as e:
         print(f"Error starting Fenrir: {e}", file=sys.stderr)
+        sys.exit(1)
+    except KeyboardInterrupt:
+        print("Interrupted", file=sys.stderr)
+        sys.exit(1)
+    finally:
         if fenrirApp and hasattr(fenrirApp, 'cleanup_on_error'):
             try:
                 fenrirApp.cleanup_on_error()
             except Exception as cleanup_error:
                 print(
                     f"Error during cleanup: {cleanup_error}", file=sys.stderr)
-        sys.exit(1)
-    finally:
         if fenrirApp:
             del fenrirApp
         # Clean up PID file if it exists

src/fenrirscreenreader/core/fenrirManager.py

@@ -5,6 +5,7 @@
 # By Chrys, Storm Dragon, and contributors.
 
 import os
+import socket
 import signal
 import sys
 import time
@@ -40,6 +41,7 @@ class FenrirManager:
             # Set signal handlers after successful initialization
             signal.signal(signal.SIGINT, self.capture_signal)
             signal.signal(signal.SIGTERM, self.capture_signal)
+            signal.signal(signal.SIGHUP, self.capture_signal)
             self.signal_handlers_set = True
 
             self.is_initialized = True
@@ -381,9 +383,15 @@ class FenrirManager:
         time.sleep(0.6)
 
         for currentManager in self.environment["general"]["managerList"]:
-            if self.environment["runtime"][currentManager]:
+            try:
+                if (
+                    currentManager in self.environment["runtime"]
+                    and self.environment["runtime"][currentManager]
+                ):
                     self.environment["runtime"][currentManager].shutdown()
                     del self.environment["runtime"][currentManager]
+            except Exception:
+                pass  # Ignore errors during individual manager shutdown
 
         self.environment = None
 
@@ -394,6 +402,7 @@ class FenrirManager:
             if self.signal_handlers_set:
                 signal.signal(signal.SIGINT, signal.SIG_DFL)
                 signal.signal(signal.SIGTERM, signal.SIG_DFL)
+                signal.signal(signal.SIGHUP, signal.SIG_DFL)
                 self.signal_handlers_set = False
 
             # Clean up any initialized managers
@@ -454,7 +463,6 @@ class FenrirManager:
                 # Clean up socket files that might not be removed by the driver
                 try:
                     socket_file = None
-                    screen_driver = None
                     if (
                         "runtime" in self.environment
                         and "SettingsManager" in self.environment["runtime"]
@@ -465,19 +473,9 @@ class FenrirManager:
                             ].get_setting("remote", "socket_file")
                         except Exception:
                             pass  # Use default socket file path
-                        try:
-                            screen_driver = self.environment["runtime"][
-                                "SettingsManager"
-                            ].get_setting("screen", "driver")
-                        except Exception:
-                            pass
 
                     if not socket_file:
-                        if screen_driver == "vcsaDriver":
+                        # Always clean up PID-specific socket
-                            socket_file = "/tmp/fenrirscreenreader-deamon.sock"
-                            if os.path.exists(socket_file):
-                                os.unlink(socket_file)
-
                         pid_socket_file = (
                             "/tmp/fenrirscreenreader-"
                             + str(os.getpid())
@@ -485,6 +483,20 @@ class FenrirManager:
                         )
                         if os.path.exists(pid_socket_file):
                             os.unlink(pid_socket_file)
+
+                        # Clean up main socket only if it is stale (not active)
+                        main_socket_file = "/tmp/fenrirscreenreader-deamon.sock"
+                        if os.path.exists(main_socket_file):
+                            try:
+                                test_sock = socket.socket(
+                                    socket.AF_UNIX, socket.SOCK_STREAM
+                                )
+                                test_sock.settimeout(0.2)
+                                test_sock.connect(main_socket_file)
+                            except OSError:
+                                os.unlink(main_socket_file)
+                            finally:
+                                test_sock.close()
                     elif os.path.exists(socket_file):
                         os.unlink(socket_file)
                     remoteInstanceRegistry.remove_instance()

src/fenrirscreenreader/core/remoteInstanceRegistry.py

@@ -28,6 +28,7 @@ def write_instance(instance_data):
     registry_dir = get_registry_dir()
     os.makedirs(registry_dir, mode=0o755, exist_ok=True)
     os.chmod(registry_dir, 0o755)
+    prune_stale_instances()
     instance_data["updated_at"] = time.time()
     instance_path = get_instance_file(instance_data.get("pid"))
     with open(instance_path, "w", encoding="utf-8") as instance_file:
@@ -53,6 +54,39 @@ def process_exists(pid):
         return False
 
 
+def prune_stale_instances():
+    registry_dir = get_registry_dir()
+    try:
+        instance_files = os.listdir(registry_dir)
+    except FileNotFoundError:
+        return
+
+    now = time.time()
+    for instance_name in instance_files:
+        instance_path = os.path.join(registry_dir, instance_name)
+        try:
+            with open(instance_path, "r", encoding="utf-8") as instance_file:
+                instance_data = json.load(instance_file)
+            pid = int(instance_data.get("pid", 0))
+            updated_at = float(instance_data.get("updated_at", 0))
+        except (OSError, ValueError, TypeError, json.JSONDecodeError):
+            try:
+                os.unlink(instance_path)
+            except OSError:
+                pass
+            continue
+
+        if (
+            not pid
+            or not process_exists(pid)
+            or now - updated_at > INSTANCE_TIMEOUT_SEC
+        ):
+            try:
+                os.unlink(instance_path)
+            except OSError:
+                pass
+
+
 def list_instances():
     registry_dir = get_registry_dir()
     instances = []
@@ -72,7 +106,11 @@ def list_instances():
         except (OSError, ValueError, TypeError, json.JSONDecodeError):
             continue
 
-        if not pid or not process_exists(pid) or now - updated_at > INSTANCE_TIMEOUT_SEC:
+        if (
+            not pid
+            or not process_exists(pid)
+            or now - updated_at > INSTANCE_TIMEOUT_SEC
+        ):
             try:
                 os.unlink(instance_path)
             except OSError:

src/fenrirscreenreader/fenrirVersion.py

@@ -4,5 +4,5 @@
 # Fenrir TTY screen reader
 # By Chrys, Storm Dragon, and contributors.
 
-version = "2026.05.14"
+version = "2026.05.18"
 code_name = "testing"