Comment 3 for bug 640883

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Kalle Valo (kvalo) wrote : Re: wont connect to my wlan

From cmcc.log:

org.moblin.connman.Error.Failed: Input/output error

This looks like connman error. Can you please run indicator-network with debug logs enabled and post /var/log/syslog here:

sudo indicator-network-debug start

More info here:

https://wiki.ubuntu.com/ConnMan/Debugging