Remove /size: parameter conflict with /monitors: for better compatibility

Issue: /monitors:1,2 with /size:3840x1080 still shows only single monitor
Analysis: /size: parameter may conflict with /monitors: in FreeRDP 2.11.5

New approach:
- Use /monitors:1,2 WITHOUT /size: parameter
- Let /monitors: parameter handle monitor layout and sizing automatically
- Remove /size: from command when using specific monitor selection
- Keep /size: only for single monitor or manual resolution settings

Expected behavior:
- /monitors:1,2 should automatically span across monitors 1,2
- Remove potential parameter conflicts causing single monitor fallback
- Maintain fullscreen-like behavior through monitor spanning

Test command change:
Before: xfreerdp /size:3840x1080 /monitors:1,2
After:  xfreerdp /monitors:1,2

This follows FreeRDP documentation that /monitors: should handle sizing.

rdp_client.py

@@ -917,10 +917,16 @@ Multi-Monitor Support:
                 color_depth = conn.get("color_depth", 32)
                 cmd.append(f"/bpp:{color_depth}")
                 
-                # Multiple monitors - use /monitors: for specific selection
+                # Multiple monitors - try different approaches for better compatibility
                 if use_specific_monitors:
+                    # Method 1: Try /monitors: without /size for better compatibility
                     cmd.append(f"/monitors:{monitor_list}")
-                    self.logger.info(f"Using specific monitors for {multimon}: {monitor_list}")
+                    self.logger.info(f"Using specific monitors for {multimon}: {monitor_list} (Method 1: /monitors: only)")
+                    
+                    # Remove the /size: parameter we added earlier - let /monitors: handle sizing
+                    cmd = [x for x in cmd if not x.startswith('/size:')]
+                    self.logger.info("Removed /size: parameter to avoid conflict with /monitors:")
+                    
                 elif multimon == "All Monitors":
                     cmd.append("/multimon")
                     self.logger.info("Using all available monitors")

test_new_monitor_approach.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+
+def test_new_monitor_approach():
+    print("=== Testing New Monitor Approach ===")
+    print()
+    
+    # Simulate the command building process
+    cmd = ["xfreerdp", "/v:test-server", "/u:testuser", "/p:password"]
+    
+    # Test scenario: 2 Monitors with Full Screen
+    multimon = "2 Monitors"
+    resolution = "Full Screen"
+    use_specific_monitors = multimon in ["2 Monitors", "3 Monitors", "4 Monitors"]
+    monitor_list = "1,2"  # Simulated result
+    
+    print(f"Testing: {multimon} with {resolution}")
+    print(f"Monitor list: {monitor_list}")
+    print()
+    
+    # Original resolution handling
+    if resolution == "Full Screen" and not use_specific_monitors:
+        cmd.append("/f")
+        print("Step 1: Added /f")
+    elif resolution == "Full Screen" and use_specific_monitors:
+        combined_res = "3840x1080"  # Simulated calculation
+        cmd.append(f"/size:{combined_res}")
+        print(f"Step 1: Added /size:{combined_res}")
+    else:
+        cmd.append(f"/size:{resolution}")
+        print(f"Step 1: Added /size:{resolution}")
+    
+    cmd.append("/bpp:32")
+    print("Step 2: Added /bpp:32")
+    
+    # New monitor handling approach
+    if use_specific_monitors:
+        cmd.append(f"/monitors:{monitor_list}")
+        print(f"Step 3: Added /monitors:{monitor_list}")
+        
+        # Remove /size: to avoid conflicts
+        cmd = [x for x in cmd if not x.startswith('/size:')]
+        print("Step 4: Removed /size: parameter to avoid conflict")
+    
+    print()
+    print("Final command:")
+    cmd_str = ' '.join(cmd).replace("/p:password", "/p:***")
+    print(cmd_str)
+    print()
+    print("Expected behavior: /monitors:1,2 should span across monitors 1 and 2")
+    print("without /size: interference")
+
+if __name__ == "__main__":
+    test_new_monitor_approach()