@acris I already use it and it's works but for enable wifi i must turn off and turn on after every boot. Any work around for this? thanks

@DonGesualdo i just updated the file wpa_supplicant in /etc/wpa_supplicant as recommended here and now sometimes works (I have to deactivate
and reactivate wifi but is not a big problem)

@OyyoDams
Thanks with recalbox7 the installation works but not the connection. when I plug the dongle i have this output in dmesg:

[   91.066100] usb 1-1.4: USB disconnect, device number 4
[   96.102041] usb 1-1.4: new high-speed USB device number 5 using ehci-pci
[   96.181798] usb 1-1.4: New USB device found, idVendor=7392, idProduct=7811, bcdDevice= 2.00
[   96.181802] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[   96.181804] usb 1-1.4: Product: 802.11n WLAN Adapter
[   96.181806] usb 1-1.4: Manufacturer: Realtek
[   96.181807] usb 1-1.4: SerialNumber: 00e04c000001
[   96.182440] rtl8192cu: Chip version 0x10
[   96.268158] rtl8192cu: Board Type 0
[   96.268399] rtl_usb: rx_max_size 15360, rx_urb_num 8, in_ep 1
[   96.268441] rtl8192cu: Loading firmware rtlwifi/rtl8192cufw_TMSC.bin
[   96.268461] ieee80211 phy1: Selected rate control algorithm 'rtl_rc'
[   96.282036] rtl8192cu 1-1.4:1.0 wlan1: renamed from wlan0
[   96.293179] udevd[1412]: renamed network interface wlan0 to wlan1
[   96.323527] rtl8192cu: MAC auto ON okay!
[   96.356546] rtl8192cu: Tx queue select: 0x05

The interface appear in ifconfig:

wlan1     Link encap:Ethernet  HWaddr 08:BE:AC:07:27:27
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

but wifi doesn't works at all...
the secret not contains special chars, it's quite long 19 chars (is that a problem?) and when I open again the password in edit is not crypted how i expect. Where i'm wrong?

@DonGesualdo I'm not run recalbox on raspberry but on PC the same dongle in recalbox on raspberry works. why?

Hi, I have the same problem. using Edimax EW-7811un bought for this specific use as recommended, but nothing...

[  479.000548] usb 1-1.4: new high-speed USB device number 4 using ehci-pci
[  479.110531] usb 1-1.4: New USB device found, idVendor=7392, idProduct=7811
[  479.110534] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  479.110537] usb 1-1.4: Product: 802.11n WLAN Adapter
[  479.110547] usb 1-1.4: Manufacturer: Realtek
[  479.110548] usb 1-1.4: SerialNumber: 00e04c000001

this is my output, i'm hope to see something like this:

 usbcore: registered new interface driver ******

but nothing.
Any idea?

Thank you