RPI 2 + Recalbox 4.0.2 + TP Link wn822n v4



  • Hi guys,

    I'm getting an issue with this configuration: RPI 2 + Recalbox 4.0.2 + TP Link wn822n v4.
    It seems that TP Link wn822n v4 is not recognized.
    It is weird because it is listed as supported on the wiki compatibilty page.

    I did not find so much information about this dongle on the forum.
    In the following topic, author said that v3 of this dongle works properly.
    https://forum.recalbox.com/topic/3227/solved-rpi-3-tplink-wn822n-cannot-connect-to-wireless/2

    Note that I also have a Wi-Pi dongle which works fine, so it should not be a problem related with the network paramaters (SSID, hidden network, password special character, etc)

    According to the other "wi-fi issue" topics, it could be a driver problem, here what I have in /lib/firmware/rtlwifi/
    -rw-rw-r-- 1 root root 11216 Dec 7 2015 rtl8188efw.bin
    -rw-rw-r-- 1 root root 13904 Dec 7 2015 rtl8188eufw.bin
    -rw-rw-r-- 1 root root 16192 Dec 7 2015 rtl8192cfw.bin
    -rw-rw-r-- 1 root root 14818 Dec 7 2015 rtl8192cfwU.bin
    -rw-rw-r-- 1 root root 16332 Dec 7 2015 rtl8192cfwU_B.bin
    -rw-rw-r-- 1 root root 16014 Dec 7 2015 rtl8192cufw.bin
    -rw-rw-r-- 1 root root 16116 Dec 7 2015 rtl8192cufw_A.bin
    -rw-rw-r-- 1 root root 16096 Dec 7 2015 rtl8192cufw_B.bin
    -rw-rw-r-- 1 root root 16116 Dec 7 2015 rtl8192cufw_TMSC.bin
    -rw-rw-r-- 1 root root 31376 Dec 7 2015 rtl8192defw.bin
    -rw-rw-r-- 1 root root 80208 Dec 7 2015 rtl8192sefw.bin
    -rw-rw-r-- 1 root root 122328 Dec 7 2015 rtl8712u.bin
    -rw-rw-r-- 1 root root 30746 Dec 7 2015 rtl8723befw.bin
    -rw-rw-r-- 1 root root 11662 Dec 7 2015 rtl8723fw.bin
    -rw-rw-r-- 1 root root 22996 Dec 7 2015 rtl8723fw_B.bin
    -rw-rw-r-- 1 root root 28984 Dec 7 2015 rtl8821aefw.bin
    -rw-rw-r-- 1 root root 19858 Dec 7 2015 rtl8821aefw_wowlan.bin

    Help me please!
    Thanks



  • @jMichMuch dmesg may tell you which firmware it is expecting. Otherwise, need to search in internet



  • Thanks @substring.

    Below dmesg output:
    [119821.540383] usb 3-4.1.1: new high-speed USB device number 10 using dwc_otg
    [119821.628855] usb 3-4.1.1: New USB device found, idVendor=2357, idProduct=0108
    [119821.628859] usb 3-4.1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
    [119821.628862] usb 3-4.1.1: Product: 802.11n NIC
    [119821.628864] usb 3-4.1.1: Manufacturer: Realtek
    [119821.628866] usb 3-4.1.1: SerialNumber: 00e04c000001

    So a Realtek driver I guess? But which one?

    Looking for a similar issue, I found this discussion:
    https://github.com/Mange/rtl8192eu-linux-driver/issues/6
    It seems that driver for the v4 of this dongle should only work for Linux (kernel 2.6.18 ~ 3.10.10), but Recalbox is 4.1.13-v7.
    If I understood correctly, they propose a patch to keep it working on newer kernels, but I don't know if I can and how to apply this on Recalbox.
    Any clue?



  • @jMichMuch i'm not sure that even compiling on raspbian this would work. That's something we must dig and find out how we could eventually add it to recalbox. Or maybe it already exists and we didn't enable it



  • I guess I can't do much more at this point, right?
    I hope to see this feature in a near future!
    At least in the mean time I can keep using the Wi-Pi.
    Thanks again @Substring and have a nice week-end!



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