Udev problem

[Tony Nelson]

At 4:55 PM +0000 1/18/07, Anne Wilson wrote:
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>I use a video capture card for my analogue camcorder, and a webcam.  Udev's
>habit of randomly setting video0 and video1 are a problem, so after a good
>bit of reading I set out to create persistent symlinks.  The idea is that the
>device is recognised and the link is made to whichever video* is appropriate.
>The links are created, but there are problems.
>
>First, /dev/DC10plus does not get removed at shutdown.  I'm not sure
>about /dev/webcam, I haven't seen any error messages (though I haven't
>thoroughly examined the logs).  Looking at the permissions on the links,they
>are owned root:root.
>
>lrwxrwxrwx 1 root root 14 Jan 18 16:39 /dev/DC10plus -> mapper/control
>lrwxrwxrwx 1 root root 6 Jan 18 16:39 /dev/webcam -> video0
>
>If I chown to anne:root they are properly deleted on shutdown.
>
>Attempting to use /dev/DC10plus gives me these errors:
>
>**ERROR: [lavrec] Error opening video-device (/dev/DC10plus): Permission
>denied
>**ERROR: [lavrec] Something went wrong while setting up the card
>
>After chown:
>
>**ERROR: [lavrec] Error setting channel: Permission denied
>**ERROR: [lavrec] Something went wrong while setting up the card
>
>It all seems to revolve around permissions.  Also, it looks as though anne may
>need to own the link in order to use it.  If so, I have to find some way of
>that being automatically set.
>
>Any thoughts?

Well, I know nothing, but it might be enough for anne to be in a group that
can write the link.  Possibly a new group is needed, or maybe there is
already a group associated with that device.
-- 
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