Re: /dev/video0

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Alain PORTAL writes:

Hi,

Can somebody tell me how is created this device?

When I'm connecting my webcam, nothing happends but in messages.log:

kernel: usb 4-1.4: USB disconnect, address 3
kernel: usb 4-1.4: new full speed USB device using uhci_hcd and address 4
kernel: usb 4-1.4: not running at top speed; connect to a high speed hub
kernel: usb 4-1.4: configuration #1 chosen from 1 choice
kernel: 4:3:1: cannot set freq 0 to ep 0x86
kernel: 4:3:2: cannot set freq 0 to ep 0x86

[ … ]

v4l2: open /dev/video0: Aucun périphérique de ce type
v4l2: open /dev/video0: Aucun périphérique de ce type
v4l: open /dev/video0: Aucun périphérique de ce type
no video grabber device available

Where is the problem?

The kernel module is responsible for doing a bunch of things that eventually results in the creation of a device node.

If you don't get a device node, it usually means that your hardware device is not supported by the Linux kernel.

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