udev device nodes won't come back

Hello,

I'm running udev 030 on a Gentoo / 2.6.8 system, and I'm having some trouble with my tv tuner card. While trying to get things working, I noticed that the /dev/v4l directory was only present when the bttv module was loaded. But at one point after a system lockup, /dev/v4l was there even though bttv was *not* loaded.

So I deleted /dev/v4l expecting it to be properly re-created when I loaded bttv... but that didn't happen. How can I fix this?

Thanks,
Anthony DiSante
http://nodivisions.com/

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Does running /sbin/udevstart create the node?

What is in the db?
[kay@pim ~]$ udevinfo -q all -p /sys/class/video4linux/video0
P: /sys/class/video4linux/video0
N: video0
T: c
M: 020660
S: video
O: root
G: root
F: /etc/udev/rules.d/50-udev.rules
L: 33
U: 45486

What does udevtest print?
[kay@pim ~]$ udevtest /sys/class/video4linux/video0
version 032
looking at '/class/video4linux/video0'
configured rule in '/etc/udev/rules.d/50-udev.rules' at line 33 applied, 'video0' becomes '%k' creating device node '/dev/video0', major = '81', minor = '0', mode = '020660', uid = '0', gid = '0'

How does the corresponding /sys-device entry look like?
[kay@pim ~]$ tree /sys/class/video4linux/ /sys/class/video4linux/
`-- video0

      |-- bridge
      |-- brightness
      |-- contrast
      |-- custom_id
      |-- dev
      |-- device -> ../../../devices/pci0000:00/0000:00:1d.1/usb3/3-1
      |-- driver -> ../../../bus/usb/drivers/usb
      |-- exposure
      |-- hue
      |-- model
      |-- name
      |-- saturation
      `-- sensor

Good luck,
Kay

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I had all the tv-related modules rmmoded overnight, and today when I modprobed bttv, all the nodes got created properly. Very strange... I guess there's some kind of timeout in the code somewhere?

I'll try these tests next time though; since problems with my tv-tuner card(s) are never-ending, I'm sure I'll get the chance to.

Thanks,
Anthony DiSante
http://nodivisions.com/

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