[SGVHAK] how do I give raspberry pi a permanent wifi ip on boot?

[James McDuffie]

Have you tried changing:
iface wlan0 inet manual
to:
iface wlan0 inet auto

In 
/etc/network/interfaces?

On Tue, Jan 22, 2013, at 09:49 PM, Homan Chou wrote:
> I just got my raspberry pi.  I don't have an extra usb keyboard and
> mouse laying around so I borrowed one and quickly enabled ssh.  I want
> to be able to plugin power to the raspberry pi any where in the house
> (it has a realtek usb wifi) and be able to ssh into it from a known
> ip.
> 
> Following this blog:
> http://kerneldriver.wordpress.com/2012/10/21/configuring-wpa2-using-wpa_supplicant-on-the-raspberry-pi/
>  I was able to get it working, after setting /etc/network/interfaces
> to:
> 
> pi at raspberrypi ~ $ cat /etc/network/interfaces
> auto lo
> 
> iface lo inet loopback
> iface eth0 inet dhcp
> 
> #allow-hotplug wlan0
> iface wlan0 inet manual
> wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
> #iface default inet dhcp
> iface default inet static
>     address 192.168.2.33
>     netmask 255.255.255.0
>     gateway 192.168.2.1
> 
> and running the command:  sudo ifup wlan0
> 
> But when I reboot the pi, they wifi isn't enabled by default.  I have
> to run sudo ifup wlan0 manually to activate wifi it seems.
> 
> My question is, how do I enable the wifi on boot?  I found this other
> article: http://stinebaugh.info/auto-start-your-wifi-on-raspberry-pi/
> 
> Which mentions to put a bunch of stuff in /etc/rc.local ...
> 
> echo “Starting WiFi…”
> wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf
> sleep .5s
> dhclient wlan0
> echo “WiFi should be started”
> 
> exit 0
> 
> But is that necessary?  Or can I just put ifup wlan0 in there?  What
> is your guys' approach?
> 


-- 
  James McDuffie
  mcduffie at pitfall.org