Question

12

How do I bring up my wireless network at boot?

rated 0 times [ 12] [ 0] / answers: 1 / hits: 49777 / 2 Years ago, sun, july 24, 2022, 3:29:32

I am running Ubuntu Server 12.04. I have a wireless USB card. When I begin the boot process I see:

Waiting for network configuration

It turns out that the network never comes up. But once I get to the command line, if I type: ifup wlan0, then I have network access. My /etc/network/interfaces looks like this:

# The loopback network interface

auto lo

iface lo inet loopback



# The primary network interface

auto wlan0

iface wlan0 inet dhcp

wpa-ssid xxxxxxx

wpa-psk xxxxxxxx

Looking in my network-interface-wlan0.log shows:

Failed to connect to wpa_supplicant - wpa_ctrl_open: Read-only file system

Failed to bring up wlan0.

Failed to connect to wpa_supplicant - wpa_ctrl_open: Read-only file system

ifdown: interface wlan0 not configured

I've looked at other askubuntu.com questions similar to this, but they don't seem to apply.

How can I get my system to network wirelessly at boot?

Additional information:

I did some poking around. Basically once I login I need to do a:

ifdown wlan0

because I think that ip thinks that is is up, but in /var/run/network the only thing that is 'up' is ifup.lo. Then I do a

'ifup -a'

and then everything works.

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lowstonnequ

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2 Years ago

answered 2 Years ago steaocyte · Accepted Answer

Failed to connect to wpa_supplicant - wpa_ctrl_open: Read-only file system

According to your log you 'll need to use wpa_supplicant.

So add something similar to this:

auto wlan0

iface wlan0 inet dhcp

wpa-conf /etc/wpa_supplicant.conf

Contents of /etc/wpa_supplicant.conf :

network={

        ssid="ADD-YOUR-SSID-HERE"

        proto=RSN

        key_mgmt=WPA-PSK

        pairwise=CCMP TKIP

        group=CCMP TKIP

        psk="ADD-YOUR-WPA-PASSWORD-HERE"

}