REAL FIX: Disable MPS for chatterbox-tts compatibility - Forces CPU mode on Apple Silicon due to chatterbox-tts MPS tensor issues - Adds clear explanation in UI and README - Prevents 'Placeholder storage has not been allocated on MPS device' errors - Tested and verified working on Apple Silicon

README.md

@@ -86,13 +86,16 @@ if DEVICE != "cpu":
 ## 🚀 app.py Enhancements Summary
 
 Our enhanced app.py includes:
-- **🎯 MPS GPU Acceleration** for Apple Silicon M1/M2/M3/M4
-- **📝 Smart Text Chunking** with sentence boundary detection
+- **🍎 Apple Silicon Compatibility** - Optimized for M1/M2/M3/M4 Macs
+- **📝 Smart Text Chunking** with sentence boundary detection  
 - **🎨 Professional Gradio UI** with progress tracking
 - **🔧 Advanced Controls** for exaggeration, temperature, CFG/pace
 - **🛡️ Error Handling** with graceful CPU fallbacks
 - **⚡ Performance Optimizations** and memory management
 
+### 💡 Apple Silicon Note
+While your Mac has MPS GPU capability, chatterbox-tts currently has compatibility issues with MPS tensors. This app automatically detects Apple Silicon and uses CPU mode for maximum stability and compatibility.
+
 ## 🎵 Usage Examples
 
 ### Basic Text-to-Speech

app.py

@@ -42,15 +42,17 @@ if 'torch' in sys.modules:
 logger.info("✅ Applied comprehensive torch.load device mapping patch")
 
 # Device detection with MPS support
-if torch.backends.mps.is_available():
-    DEVICE = "mps"
-    logger.info("🚀 Running on MPS (Apple Silicon GPU)")
-elif torch.cuda.is_available():
+# Note: Chatterbox-TTS has compatibility issues with MPS, forcing CPU for stability
+if torch.cuda.is_available():
     DEVICE = "cuda"
     logger.info("🚀 Running on CUDA GPU")
 else:
     DEVICE = "cpu"
-    logger.info("🚀 Running on CPU")
+    if torch.backends.mps.is_available():
+        logger.info("🍎 Apple Silicon detected - using CPU mode for Chatterbox-TTS compatibility")
+        logger.info("💡 Note: MPS support is disabled due to chatterbox-tts library limitations")
+    else:
+        logger.info("🚀 Running on CPU")
 
 print(f"🚀 Running on device: {DEVICE}")
 
@@ -60,7 +62,7 @@ MODEL = None
 def get_or_load_model():
     """Loads the ChatterboxTTS model if it hasn't been loaded already,
     and ensures it's on the correct device."""
-    global MODEL
+    global MODEL, DEVICE
     if MODEL is None:
         print("Model not loaded, initializing...")
         try:
@@ -107,7 +109,6 @@ def get_or_load_model():
                 except Exception as e:
                     logger.warning(f"⚠️ Failed to move some components to {DEVICE}: {e}")
                     logger.info("🔄 Falling back to CPU mode for stability")
-                    global DEVICE
                     DEVICE = "cpu"
                     MODEL.device = "cpu"