Hi all, When I connect a USB webcam, org.freedesktop.Hal.Manager generates a couple of DeviceAdded signals for the newly created HAL objects. One of these objects usually has the 'Video4Linux' capability. These are the HAL objects created when I plug in a Creative NX webcam (no microphone): /org/freedesktop/Hal/devices/usb_device_41e_401c_noserial /org/freedesktop/Hal/devices/usb_device_ffffffff_ffffffff_noserial /org/freedesktop/Hal/devices/usb_device_41e_401c_noserial_video4linux The last one in this case holds the information about V4L and is easily identifiable by checking at least "info.category" and "info.capabilities". However, when I connect an old Logitech Quickcam express (qc-usb driver), no V4L-related object is created and I only get:. /org/freedesktop/Hal/devices/usb_device_46d_840_noserial /org/freedesktop/Hal/devices/usb_device_46d_840_noserial_if0 grep'ping syslog shows the webcam has been detected and the device file created. Is this HAL-related or driver-related ? If it is driver-related, which step (specifically which function call) usually notifies HAL that a new V4L object has been added ? is it tied to one of the sysfs routines ? Thanks, Gilles