Attempt to fix the bug where Fenrir freezes the computer solid if it manages to start before sound is ready. It shuld at least release the keyboard now.

src/fenrirscreenreader/core/inputDriver.py

@@ -42,6 +42,25 @@ class inputDriver():
         if not self._initialized:
             return True
         return True
+
+    def forceUngrab(self):
+        """Emergency method to release grabbed devices in case of failure"""
+        if not self._initialized:
+            return True
+        try:
+            # Try standard ungrab first
+            return self.ungrabAllDevices()
+        except Exception as e:
+            # Just log the failure and inform the user
+            if hasattr(self, 'env') and 'runtime' in self.env and 'debug' in self.env['runtime']:
+                self.env['runtime']['debug'].writeDebugOut(
+                    f"Emergency device release failed: {str(e)}", 
+                    debug.debugLevel.ERROR
+                )
+            else:
+                print(f"Emergency device release failed: {str(e)}")
+        return False
+
     def hasIDevices(self):
         if not self._initialized:
             return False

src/fenrirscreenreader/core/inputManager.py

@@ -49,6 +49,7 @@ class inputManager():
         return event
     def setExecuteDeviceGrab(self, newExecuteDeviceGrab = True):
         self.executeDeviceGrab = newExecuteDeviceGrab
+
     def handleDeviceGrab(self, force = False):
         if force:
             self.setExecuteDeviceGrab()
@@ -61,17 +62,38 @@ class inputManager():
         if not self.env['runtime']['settingsManager'].getSettingAsBool('keyboard', 'grabDevices'):
             self.executeDeviceGrab = False
             return
+        
+        # Add maximum retries to prevent infinite loops
+        maxRetries = 5
+        retryCount = 0
+        grabTimeout = 3  # Timeout in seconds
+        startTime = time.time()
+    
         if self.env['runtime']['screenManager'].getCurrScreenIgnored():
             while not self.ungrabAllDevices():
+                retryCount += 1
+                if retryCount >= maxRetries or (time.time() - startTime) > grabTimeout:
+                    self.env['runtime']['debug'].writeDebugOut("Failed to ungrab devices after multiple attempts", debug.debugLevel.ERROR)
+                    # Force a release of devices if possible through alternative means
+                    try:
+                        self.env['runtime']['inputDriver'].forceUngrab()
+                    except:
+                        pass
+                    break
                 time.sleep(0.25)
-                self.env['runtime']['debug'].writeDebugOut("retry ungrabAllDevices " ,debug.debugLevel.WARNING)
-            self.env['runtime']['debug'].writeDebugOut("All devices ungrabbed" ,debug.debugLevel.INFO)
+                self.env['runtime']['debug'].writeDebugOut(f"retry ungrabAllDevices {retryCount}/{maxRetries}", debug.debugLevel.WARNING)
         else:
             while not self.grabAllDevices():
+                retryCount += 1
+                if retryCount >= maxRetries or (time.time() - startTime) > grabTimeout:
+                    self.env['runtime']['debug'].writeDebugOut("Failed to grab devices after multiple attempts", debug.debugLevel.ERROR)
+                    # Continue without grabbing input - limited functionality but not locked
+                    break
                 time.sleep(0.25)
-                self.env['runtime']['debug'].writeDebugOut("retry grabAllDevices" ,debug.debugLevel.WARNING)
-            self.env['runtime']['debug'].writeDebugOut("All devices grabbed" ,debug.debugLevel.INFO)
+                self.env['runtime']['debug'].writeDebugOut(f"retry grabAllDevices {retryCount}/{maxRetries}", debug.debugLevel.WARNING)
+    
         self.executeDeviceGrab = False
+
     def sendKeys(self, keyMacro):
         for e in keyMacro:
             key = ''

src/fenrirscreenreader/fenrirVersion.py

@@ -4,5 +4,5 @@
 # Fenrir TTY screen reader
 # By Chrys, Storm Dragon, and contributers.
 
-version = "2025.03.02"
+version = "2025.03.20"
 codeName = "testing"