Raspberry Pi Forums

Posted: **Sat Apr 06, 2013 4:29 pm**

Hi:

I am triying to use netcfg to set up the connection but I get this error :

Failed to connect to non-global ctrl_ifname: wlan0  error: No such file or directory.

My /etc/wpa_supplicant.conf is :

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network={
        ssid="xxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
        psk=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
}

When I run:

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wpa_supplicant -iwlan0 -c /etc/wpa_supplicant.conf & dhcpcd wlan0

It connects, but when I try to use netcfg I get the previous error. The config profile I am using is:

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WPA_DRIVER='wext'
CONNECTION='wireless'
DESCRIPTION='A wpa_supplicant configuration based wireless connection'
INTERFACE='wlan0'
SECURITY='wpa-config'
WPA_CONF='/etc/wpa_supplicant.conf'
IP='dhcp'
# Uncomment this if your ssid is hidden
#HIDDEN=yes

Do you know what could happen?
Thank you very much

Posted: **Sun Apr 07, 2013 7:13 am**

This is a bit of a wild guess, but based on your error message, try adding the following to the top of your wpa_supplicant.conf (outside the network block):

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ctrl_interface=/var/run/wpa_supplicant

Posted: **Thu Apr 03, 2014 12:42 am**

Since OP didn't reply, I'll say that this was my problem and adding the ctrl,_interface line fixed it.

Posted: **Tue Aug 22, 2017 5:16 pm**

Hello

,

I had a similar bug with Raspian Stretch, when I executed "sudo wpa_cli reconfigure", it has always return this error

: (Notice the nil in place of the null)

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Failed to connect to non-global ctrl_ifname: (nil)  error: No such file or directory

I solved it by doing:

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sudo ln -s /usr/share/dhcpcd/hooks/10-wpa_supplicant /etc/dhcp/dhclient-enter-hooks.d/

Do I've done something wrong? I am using on Raspberry Pi B Model with a Wifi Dongle, Headless with net.ifname=0...
I've followed the procedure from here https://www.raspberrypi.org/documentati ... ess-cli.md

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