Re: udev rules to turn networkmanager on and off?

[Dan Williams <dcbw redhat com>]

On Sun, 2007-01-07 at 00:58 -0500, Matt Price wrote:
> Hi,
> 
> I have a tablet (compaq tc1000) with a flaky atmel wireless card that
> cuts out about once a day.  When that happens, I can't get the carad to
> start back up again without rebooting, and sometimes even that doesn't
> work.  
> 
> Foretunately I have a prism2_usb wireless device that I can just plug in
> to the ocmputer when that happens.  The device works fine but doesn't
> play with network-manager proerly -- n-m sees it, but isn't able to
> identify networks to which it might connect.

Which driver is this?  Last I knew, most of the USB wireless drivers
really sucked for anything automatic, weren't in the upstream kernel,
and had horrible WEXT support.  So it's likely no wonder it doesn't work
well with NM and wpa_supplicant...

Dan

> The solution isn't so difficult -- I just stop n0m with (in ubuntu):
> 
> sudo /etc/dbus-1/event.d/25NetworkManager stop
> ifup wlan0
> 
> where wlan0 is configured thus in /etc/network/interfaces:
> 
> iface wlan0 inet dhcp
> wireless-mode managed
> 
> since I have an unsecured network that's enough to get the thing to
> connect.
> 
> However, this tablet is used mostly by my daughter who uses it largely
> to surf the internet.  Itwould be great if she could use it as much as
> possible without the usb device connected, and THEN have the device
> brought up automatically, and network-manager stopped, when the device
> is plugged in.  It would be great if network-manager could be restarted
> when the device is pulled out, too.  
> 
> I have a dumb little script that does what I want: 
> 
> #!/bin/sh
> 
> case "$1" in
>     start)
> 
> 	/etc/dbus-1/event.d/25NetworkManager stop
> 	ifup wlan0
>     ;;
>     stop)
>         ifdown wlan0
> 	/etc/dbus-1/event.d/25NetworkManager start
>     ;;
>   force-reload|restart)
>     $0 stop
>     $0 start
>     ;;
>   *)
>     echo "Usage: /usr/local/scripts/usb_wireless {start|stop|restart|
> force-reload}"
>     exit 1
>     ;;
> esac
> 
> exit 0
> 
> ----------------
> 
> 
> 
> this works fine for me, but I'd like to have this script triggered
> automagically by udev or something.  I was just wondering whether there
> was an obvious way to do this through udev; or if maybe there's also a
> better way to do it.  
> 
> anyway htanks,
> 
> matt
> 
> 
> 
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