Connecting to wifi router after changing wpa_supplicant.config without reboot (stretch)

[emw]

How do you get the raspberry pi to connect to the wifi router after setting the ssid/password without rebooting. In older versions I just used 'sudo ifdown wlan0; sudo ifup wlan0' but ifupdown is not supported on stretch.

I have tried each of the following, none of which have work:

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sudo systemctl restart wpa_supplicant.service
sudo systemctl restart networking.service
sudo service networking restart

but 'sudo reboot' works fine

[ShiftPlusOne]

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wpa_cli -i wlan0 reconfigure

[metalshark]

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wpa_cli -i wlan0 reconfigure

This doesn't seem to work for me. I'm using the latest stretch. All I want is to restart wlan0 to reconnect to the wifi without rebooting.

[HawaiianPi]

All I want is to restart wlan0 to reconnect to the wifi without rebooting.

Out of curiosity, why is rebooting such a problem for you?

Even the Desktop version of Raspbian takes only 15 seconds to reboot (less time than it took you to ask how to avoid rebooting).

And wpa_cli -i wlan0 reconfigure should work. If it doesn't there may be something wrong with your wpa_supplicant.conf file.

[klricks]

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wpa_cli -i wlan0 reconfigure

This doesn't seem to work for me. I'm using the latest stretch. All I want is to restart wlan0 to reconnect to the wifi without rebooting.

What is the response from the above command?
It should return OK and then connect to WIFI in a few seconds.
If it returns FAIL then there is something wrong with the conf file.
If it returns OK and still does not connect the SSID or password is wrong or the WIFI is off etc.

[metalshark]

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wpa_cli -i wlan0 reconfigure

This doesn't seem to work for me. I'm using the latest stretch. All I want is to restart wlan0 to reconnect to the wifi without rebooting.

What is the response from the above command?
It should return OK and then connect to WIFI in a few seconds.
If it returns FAIL then there is something wrong with the conf file.
If it returns OK and still does not connect the SSID or password is wrong or the WIFI is off etc.

It does say "OK" but the WIFI didnt come back. SSID and PASSWORD is correct because when I do a reboot it will connect. WIFI OFF?? how may I find out is it is off? Does issuing the command >

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ifconfig wlan0 down

turn off the WIFI?

[klricks]

This doesn't seem to work for me. I'm using the latest stretch. All I want is to restart wlan0 to reconnect to the wifi without rebooting.

What is the response from the above command?
It should return OK and then connect to WIFI in a few seconds.
If it returns FAIL then there is something wrong with the conf file.
If it returns OK and still does not connect the SSID or password is wrong or the WIFI is off etc.

It does say "OK" but the WIFI didnt come back. SSID and PASSWORD is correct because when I do a reboot it will connect. WIFI OFF?? how may I find out is it is off? Does issuing the command >

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ifconfig wlan0 down

turn off the WIFI?

I mean the WIFI is turned off or not configured correctly in the WIFI router.

[metalshark]

Nah.. the wifi is clearly on. BTW, I'm using a wash down version of stretch. I downloaded the RasPBX image and that's the one I'm using. Do you think it's a possibility that it's missing file or driver? I already did the (1) sudo apt update and (2) sudo apt upgrade.

[Ernst]

Nah.. the wifi is clearly on. BTW, I'm using a wash down version of stretch. I downloaded the RasPBX image and that's the one I'm using. Do you think it's a possibility that it's missing file or driver? I already did the (1) sudo apt update and (2) sudo apt upgrade.

I suggest you ask here: http://www.raspberry-asterisk.org/forum/

[techabilla]

I have the same problem, although I've been using the desktop UI to switch between networks. Changing to a new, or previously working wifi network will not work until a reboot is performed. I've tried the suggested command, and it returns 'OK', but still not network connection until reboot.

Raspberry Pi 2 Model B, Raspian Stretch, Edimax WiFi adapter.

[MarrsAttax]

I'm having this problem too. I was using a quite out of date version of raspbian where 'wpa_cli reconfigure' would reconnect without reboot but this seems to have stopped now I have updated.

[ShiftPlusOne]

I'm having this problem too. I was using a quite out of date version of raspbian where 'wpa_cli reconfigure' would reconnect without reboot but this seems to have stopped now I have updated.

Still works here, I just pass it -i wlan0 as well, to prevent it from defaulting to the p2p device.

[audas]

Yup, this was working for a long time on multiple devices with many different versions of rasp - now failing on latest build.

Fixed - user error - sorry.