Wireless + hidden SSID not working

I just bought an TL-WN823N Wifi adapter (an Realtek Semiconductor Corp. RTL8192CU 802.11n WLAN Adapter) as I want to put my Volumio box far from an ethernet RJ45 plug,

I was inspired by : wifi-and-netgear-n150-t112-10.html
2nd Post by
“Re: Wifi and NETGEAR N150
Postby ronnicek » Sat Dec 28 2013 19:09”

So my /etc/network/interfaces looks like

[code]auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address
netmask
gateway

#allow-hotplug wlan0
auto wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf[/code]

and my /etc/wpa_supplicant/wpa_supplicant.conf, created manualy (not generated) looks like :

[code]ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=0
update_config=1

network={
ssid=""
psk=""
scan_ssid=1
proto=WPA
key_mgmt=WPA-PSK
pairwise=TKIP
group=TKIP
id_str=“Volumio”
}[/code]

Wifi seems to work, but as soon as I unplug the Ethernet RJ45 cable, the Wifi connection doesn’t work :frowning:
do you know what did I miss ?

Thank you very much for your assistance

Best Rgards,
Bart

Sounds a lot like this thread: wifi-eth-disconnected-t2276.html

He has wireless-power off in his configuration. This disables the powersaving mode of the wireless adapter this could possibly be the solution.

Hi,
thank you for your answer.
I added the

wireless-power off

in either /etc/network/interfaces or /etc/wpa_supplicant/wpa_supplicant.conf file
but it still doesn’t work :frowning:

very strange a wirless IP adress works only when the cable is attached :frowning:

should I generate the /etc/wpa_supplicant/wpa_supplicant.conf file through an application?

any help will be appraciated

thank you

Best Regards,
Bart.