[yocto] rfkill cannot open control device

[Marc Ferland]

On Tue, Dec 19, 2017 at 10:23 AM, Sherif Omran
<sherifomran2000 at gmail.com> wrote:
> i used core-image-minimal for a raspberry pi 0w. But i get rfkill can not
> open control device. when i give rfkill , i get the syntanx output, this
> means it exists.
> the wifi driver is installed.
>
> What is the rfkill device? is it /dev/rfkill ?
>
Use

rfkill list

to list all devices. Then (for example):

rfkill unblock bluetooth
or
rfkill unblock all

to unblock the bluetooth device or all devices (resp.).

Marc