From mboxrd@z Thu Jan  1 00:00:00 1970
From: Anthony DiSante <orders@nodivisions.com>
Date: Wed, 29 Sep 2004 18:46:17 +0000
Subject: Re: udev device nodes won't come back
Message-Id: <415B02F9.70701@nodivisions.com>
List-Id: <linux-hotplug.vger.kernel.org>
References: <415A5FCA.2000805@nodivisions.com>
In-Reply-To: <415A5FCA.2000805@nodivisions.com>
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To: linux-hotplug@vger.kernel.org

Kay Sievers wrote:
> 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

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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