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I have a Edimax EW-7811UN wifi dongle, and I'm trying to get it to connect to my wifi when plugged into a raspberry pi zero.

First off, the pi zero has a single usb port so I can only have either my keyboard or the dongle connected, not both at the same time. I tried plugging the dongle into my keyboard's usb port, but then when I check dmesg I see the error:

No support over 100mA

So I'm stuck connecting one device at a time I guess.

My /etc/network/interfaces contains:

auto lo
iface lo

auto wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp

My /etc/wpa_supplicant/wpa_supplicant.conf contains:

ctrl_interface=DIR=/var/run/wpa_supplicant
ctrl_interface_group=netdev
update_config=1

network={
    ssid="MYSSID"
    psk="MYPSK"
    proto=RSN
    key_mgmt=WPA-PSK
    pairwise=CCMP
    auth_alg=OPEN
}

Where MYSSID and MYPSK are set to my router's ssid and password.

If I then kick off watch ifconfig, then disconnect my keyboard and connect the dongle, I see a wlan0 entry appear. However, it never gets an ip address, and the RX dropped count slowly increases, but packets, errors, overruns, and frame stay at zero. Also, nothing changes for TX.

Does anyone have any tips for getting this to connect? I've already invested about 8 hours of troubleshooting and trial/error and I'm not sure what to try next.

Other changes I made:

To the file /etc/rc.local

modprobe 8192cu
ifdown wlan0
ifup wlan0

Without the modprobe 8192cu line, the 8192cu driver doesn't load.

I also disabled power saving as described in this question.

Community
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JesseBuesking
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1 Answers1

1

Try this:

Make the section for your wlan0 in /etc/network/interfaces look like this:

allow-hotplug wlan0
iface wlan0 inet manual
    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

In your wpa_supplicant.conf file, make it like this:

country=US
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
network={
               ssid="YOUR_SSID"
               psk="YOUR_PSK"
}

Good luck

Jason Woodruff
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