On 07/31/2007 12:47 PM, Nigel Henry wrote:
I've managed to resolve most of my problems on my own, but Udev has beaten me.
Sarge is not a problem, as it's using the 2.4.27, or 2.6.8 kernel, and Udev is
not in the equation. Etch has a 2.6.8, and a 2.6.17 kernel, and Lenny has a
2.6.11, and a 2.6.17 kernel. The problem is with the 2.6.17 kernel that uses
Udev.
My TV card was set as /dev/video0, and some time later the webcam was set
as /dev/video1. this works fine with the pre 2.6.17 kernels (no Udev), and
the TV card consistently is /dev/video0, and the webcam /dev/video1. Booting
with the 2.6.17 kernel is a different scenario. Very hit and miss. Sometimes
I boot up and starting Xawtv, I get the TV /dev/video0. Othertimes I bootup
and start Xawtv, and get my webcam /dev/video1.
I've worked with ordering my soundcards, and the lines are quite simple, and
have seen that something similar is possible with Udev, although the lines a
re a bit more complex. Could someone give me a couple of lines so that my TV
card is always /dev/video0, and the webcam is always /dev/video1?
Any help gratefully appreciated for fixing this annoying problem.
Nigel.
On my Etch system, I needed persistent devices, and I didn't want to
learn udev, so I created a new directory for persistent device nodes
(/prdev). In /prdev, I used mknod to make the nodes that I needed, and I
configured the applications to use those nodes.
This may or may not work for you however. It seems that udev can deal
with situations where devices don't have standard major and minor
numbers, and some applications are hard-wired to use nodes in /dev (slap
the programmers).
In my previous Debian installation, I wrote a startup script to create
my device nodes in /dev (after udev had loaded), but this again depends
upon there being major and minor numbers designated for the devices in
question.
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