Wi-Fi networks not detected anymore
What triggered it ?
My computer froze and I ended up having to restart it using the power switch.
In case it could be relevant : it froze while I was using Calc, trying to drag and drop items (bug already filed in LibreOffice).
What have I attempted to solve it ?
I was under Kubuntu 13.10 when it happened, so I took this opportunity to reinstall the OS with Kubuntu 14.04 (no config files were kept), but it didn't solve it.
Current diagnosis :
When running "sudo iwlist wlan0 scan", "wlan0 No scan results" comes up.
The /var/lib/NetworkManager/NetworkManager.state shows :