can't connect to Wifi using TP-LINK TL-WN823N

[gkralicek2]

@blaadr Oh ok, then if it flashes even very briefly when plugged power is received ok but the fact you don't have the constant blinking afterwards means the driver doesn't initialize itself properly at bootup. What do you get when doing an ifconfig ? Do you see wlan0 listed ? And could you please make a capture of your /etc/network/interfaces file ?

[blaadr]

@gkralicek2 Ok so i do not have a wlan0 interface listed here is the outputof the ifconfig :

eth0      Link encap:Ethernet  HWaddr B8:27:EB:87:12:3A
          inet addr:192.168.0.27  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::ba27:ebff:fe87:123a%1994612484/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:104 errors:0 dropped:0 overruns:0 frame:0
          TX packets:135 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:9948 (9.7 KiB)  TX bytes:19315 (18.8 KiB)
 
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1%1994612484/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  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:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

And this is the content of the /etc/network/interfaces file :

# Configure Loopback
auto lo
iface lo inet loopback
 
auto eth0
iface eth0 inet dhcp
 
auto wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

[gkralicek2]

@blaadr ok so it seems obvious that the dongle driver is not loaded. What do you get if you type :
ifup wlan0

[blaadr]

@gkralicek2 Then I get this output :

ip: SIOCGIFFLAGS: No such device

[gkralicek2]

@blaadr ok, no wifi driver is loaded in the system and your card wlan0 is not created. So now we'll have to find what prevent the driver to be loaded in the system. I'll need a capture of your recalbox.log file.
Go to recalbox/share/system/logs and delete the file recalbox.log which is there. Then reboot your system having your dongle inserted in USB port, go back to the log folder, open the file and cut and paste the content here

[blaadr]

@gkralicek2 Here it is :

[     5271.69] : Stopping S94manager
[        2.79] : starting new log
[        2.82] : converting dos to unix carriage return characters
[        3.52] : setting audio to auto
[        3.60] : setting audio volume to 90
---- recalbox-config.sh ----
[        3.65] : setting hostname to RECALBOX
---- recalbox-config.sh ----
[        3.71] : setting audio output mode : auto
[        3.73] : setting audio volume : 90
numid=3,iface=MIXER,name='PCM Playback Route'
  ; type=INTEGER,access=rw------,values=1,min=0,max=2,step=0
  : values=0
Simple mixer control 'PCM',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback -10239 - 400
  Mono: Playback -663 [90%] [-6.63dB] [on]
[        3.84] : creating network entry in /var/lib/wpa_supplicant.conf
[        3.89] : setting keyboard layout to fr
[        3.89] : updated wifi settings : ssid=NUMERICABLE-B023 key=BNKFPLJB1K
Loading /usr/share/keymaps/i386/azerty/fr.map.gz
[        4.55] : starting emulationstation with lang = fr_FR
[        4.58] : Starting emulationstation with command :
[        4.60] : HOME=/recalbox/share/system LANG="fr_FR.UTF-8" SDL_VIDEO_GL_DRIVER=/usr/lib/libGLESv2.so SDL_NOMOUSE=1 /usr/bin/emulationstation; [ -f /tmp/shutdown.please ] && (rm /tmp/shutdown.please; shutdown -h now);[ -f /tmp/reboot.please ] && (rm /tmp/reboot.please; shutdown -r now)
---- recalbox-config.sh ----
udhcpc (v1.24.1) started
Sending discover...
Sending discover...
Sending select for 192.168.0.27...
Lease of 192.168.0.27 obtained, lease time 86400
deleting routers
adding dns 89.2.0.1
adding dns 89.2.0.2
---- recalbox-config.sh ----
[       15.85] : no wlan interface found
---- recalbox-config.sh ----
[       18.87] : Starting S94manager
Will not start pm2 : system.api.enabled is set to 0

[gkralicek2]

@blaadr unplug your Ethernet cable otherwise the Wlan0 card won't initialize. According to the capture you sent you are already connected to your network through wire and you got an IP address in 192.168.0.x. You won't manage to get another card on the same network until you unplug the first one.
So lose the network cable and reboot the pi with the usb dongle only in order to check if the network card initializes.
Once booted try to initiate a "ping recalbox" command from your Windows machine connected to the network and see if the Pi replies.

[blaadr]

@gkralicek2 Ok. I managed to isolate the part of the recalbox.log file that matches the boot with Ethernet, I think it is OK. Here is the part of the file :

[       11.37] : starting new log
[       11.41] : converting dos to unix carriage return characters
[       12.18] : setting hostname to RECALBOX
[       12.19] : setting audio volume to 90
[       12.23] : setting audio to auto
---- recalbox-config.sh ----
[       12.27] : setting audio volume : 90
---- recalbox-config.sh ----
[       12.30] : setting audio output mode : auto
numid=3,iface=MIXER,name='PCM Playback Route'
  ; type=INTEGER,access=rw------,values=1,min=0,max=2,step=0
  : values=0
Simple mixer control 'PCM',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback -10239 - 400
  Mono: Playback -663 [90%] [-6.63dB] [on]
[       12.44] : creating network entry in /var/lib/wpa_supplicant.conf
[       12.49] : updated wifi settings : ssid=NUMERICABLE-B023 key=BNKFPLJB1K
[       12.52] : setting keyboard layout to fr
Loading /usr/share/keymaps/i386/azerty/fr.map.gz
[       13.13] : starting emulationstation with lang = fr_FR
[       13.15] : Starting emulationstation with command :
[       13.18] : HOME=/recalbox/share/system LANG="fr_FR.UTF-8" SDL_VIDEO_GL_DRIVER=/usr/lib/libGLESv2.so SDL_NOMOUSE=1 /usr/bin/emulationstation; [ -f /tmp/shutdown.please ] && (rm /tmp/shutdown.please; shutdown -h now);[ -f /tmp/reboot.please ] && (rm /tmp/reboot.please; shutdown -r now)
---- recalbox-config.sh ----
udhcpc (v1.24.1) started
Sending discover...
Sending discover...
Sending discover...
No lease, failing
---- recalbox-config.sh ----
[       28.12] : no wlan interface found
[       31.19] : Starting S94manager
Will not start pm2 : system.api.enabled is set to 0
---- recalbox-config.sh ----

[gkralicek2]

@blaadr The wire connection is indeed down but the Wlan0 still hasn't initialized cause "no wlan interface found".
You dongle is not detected by the system, hence no driver is installed to handle it and mount the wlan0 interface :=((

[blaadr]

Maybe should I try reinstalling from zero the last update of the recalbox OS, is there a possibility that It will solve the problem ?

[gkralicek2]

@blaadr That's the only thing that remains to be done i'm afraid. Try to make a fresh installation and do it having the dongle installed on your usb port so that it can be initialized properly.

[blaadr]

@gkralicek2 ... not better after reinstalling... I will try with another usb dongle, any advice about which one to get ?

[gkralicek2]

@blaadr Edimax EW-7811-UN is the one i'm using on my Pi 2 and it works perfect !

[blaadr]

@gkralicek2 Ok I take this one from amazon.
I'll get you in touch when I'll get it.

However thanks for the time past trying to solve the problem.

[gkralicek2]

@blaadr At least it was worth a try. Keep me posted once you'll get the new dongle :=)

[paradadf]

@blaadr I believe you can find the answer here:
https://ubuntuforums.org/showthread.php?t=2335795

After some modifications and compiling of the rtl8192eu-linux-driver, they got it working.

[blaadr]

@paradadf Thanks for it ! I've already returned the dongle to Amazon but if it may help someone it is always good !
Anyway I think recompiling a driver is a bit too advanced for me ^^

@gkralicek2 Searching out something else, I found an old USB wifi dongle (BELKIN N300 Micro Wireless Adapater) and it works like a charm !