Re: udev rules for 2 identical webcams + 1 spare cam
On Tue, 12 Jul 2011 17:13:22 +0200, Tuxoholic wrote:
(...)
> I already figured out idProduct and idVendor of the spare cam and the
> Logitech Quickcams using udevadm:
>
> $ cat /etc/udev/rules.d/10-webcam.rules:
> SUBSYSTEM=="video4linux", ATTRS{idVendor}=="0c45", ATTRS{idProduct}=="62c0", Name="video0"
>
> SUBSYSTEM=="video4linux", ATTRS{idVendor}=="046d", ATTRS{idProduct}=="08a2", Name="video%n"
Why "video%n"? Why not using a fixed name for each Logitech webcam?
Just curious O:-)
> This produces an occasional permission slip in video2:
>
> $ ls -la /dev/video*
> crw-rw----+ 1 root video 81, 2 12. Jul 16:15 /dev/video0
> crw-rw----+ 1 root video 81, 1 12. Jul 16:15 /dev/video1
> crw------- 1 root root 81, 2 12. Jul 16:15 /dev/video2
>
>
> This never happens if I plug in the 2nd Quickcam *after* system bootup,
> it only happens when both are already plugged in *while* the system is
> booting up.
Have you tried to enforce the permissions of the webcams
(owner/group/mode)?
Controlling permissions and ownership
http://www.reactivated.net/writing_udev_rules.html#ownership
Greetings,
--
Camaleón
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