fixing leds

xvf3800.py

@@ -46,16 +46,12 @@ class XVF3800:
 
     def __init__(self, usb_device):
         self.dev = usb_device
-        # Detach kernel driver if attached, so we can send vendor control transfers
-        try:
-            if self.dev.is_kernel_driver_active(0):
-                self.dev.detach_kernel_driver(0)
-        except Exception:
-            pass
-        self.dev.set_configuration()
         self.serial = usb_device.serial_number or "unknown"
         self.bus = usb_device.bus
         self.address = usb_device.address
+        # Vendor control transfers work without claiming an interface —
+        # don't call set_configuration() or detach_kernel_driver(),
+        # the audio driver needs to keep its interface.
 
     def _read(self, resid: int, cmdid: int, length: int) -> bytes:
         """Read parameter via USB control transfer.