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I have bought this external usb wifi antenna for my raspberry pi 3B+ that I would like to use instead the default one.

I see it is based on the realtek chipset as shown in dmesg

158816.385007] usb 1-1.1.3: new high-speed USB device number 7 using dwc_otg
[158816.515745] usb 1-1.1.3: New USB device found, idVendor=0bda, idProduct=0811
[158816.515762] usb 1-1.1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[158816.515772] usb 1-1.1.3: Product: 802.11ac WLAN Adapter 
[158816.515780] usb 1-1.1.3: Manufacturer: Realtek 
[158816.515790] usb 1-1.1.3: SerialNumber: 00e04c000001

I have followed the instruction of these forum posts ( post1 and post2) to install the module for my adapter, but when I am trying to insert the module I get an error in the pi saying that the module cannot be inserted

Are those instruction still valid for my rapbian kernel 4.14.79-v7+ or 4.14.79.87-v7+ ? Or it should be easy just to update the raspian in the pi with sudo rpi-update and sudo install-wifi -u rpi-update?

Thanks in advance,

Regards

EDIT:

After using the script given by @jake I got this

pi@gf4:~ $ sudo git clone https://github.com/aircrack-ng/rtl8812au -b v5.2.20
Cloning into 'rtl8812au'...
remote: Enumerating objects: 6289, done.
remote: Total 6289 (delta 0), reused 0 (delta 0), pack-reused 6289
Receiving objects: 100% (6289/6289), 19.77 MiB | 3.31 MiB/s, done.
Resolving deltas: 100% (4307/4307), done.
pi@gf4:~ $ cd rtl*
pi@gf4:~/rtl8812au $ sudo sed -i 's/CONFIG_PLATFORM_I386_PC = y/CONFIG_PLATFORM_I386_PC = n/g' Makefile
pi@gf4:~/rtl8812au $ sudo sed -i 's/CONFIG_PLATFORM_ARM64_RPI = n/CONFIG_PLATFORM_ARM64_RPI = y/g' Makefile
pi@gf4:~/rtl8812au $ make
make ARCH=arm64 CROSS_COMPILE= -C /lib/modules/4.14.94-v7+/build M=/home/pi/rtl8812au  modules
make[1]: *** /lib/modules/4.14.94-v7+/build: Permission denied.  Stop.
Makefile:1550: recipe for target 'modules' failed
make: *** [modules] Error 2
pi@gf4:~/rtl8812au $ sudo make
make ARCH=arm64 CROSS_COMPILE= -C /lib/modules/4.14.94-v7+/build M=/home/pi/rtl8812au  modules
make[1]: Entering directory '/root/linux-049e03d71027297051bc19499082194ce64cdc91'
  CC [M]  /home/pi/rtl8812au/core/rtw_cmd.o
gcc: error: unrecognized command line option ‘-mgeneral-regs-only’
scripts/Makefile.build:326: recipe for target '/home/pi/rtl8812au/core/rtw_cmd.o' failed
make[2]: *** [/home/pi/rtl8812au/core/rtw_cmd.o] Error 1
Makefile:1535: recipe for target '_module_/home/pi/rtl8812au' failed
make[1]: *** [_module_/home/pi/rtl8812au] Error 2
make[1]: Leaving directory '/root/linux-049e03d71027297051bc19499082194ce64cdc91'
Makefile:1550: recipe for target 'modules' failed
make: *** [modules] Error 2
  • 1
    look at the accepted answer in those posts, not the repeated answer that seems to have zero upvotes - i.e. the answer you seem to have used because that's the only place that has this sudo install-wifi -c rpi-update rubbish – Jaromanda X Jan 30 at 9:15
  • I use github.com/aircrack-ng/rtl8812au.git with the actual kernel. Did any errors occur while installing (building) the drivers? – jake Jan 30 at 9:15
  • What is 4.14.79.87-v7+ ? No such thing - the latest supported kernel is 4.14.79-v7+ – Milliways Jan 30 at 11:05
  • Don't use rpi-update except you really know what you are doing. It will install untested developer versions and may make your system unstable. – Ingo Jan 31 at 1:04
0

This worked fine for my, so u suggest doing this step by step and then tell us, where it went wrong:

sudo apt-get install build-essential raspberrypi-kernel-headers bc

sudo wget "https://raw.githubusercontent.com/notro/rpi-source/master/rpi-source" -O /usr/bin/rpi-source
sudo chmod 755 /usr/bin/rpi-source
sudo rpi-source 

git clone https://github.com/aircrack-ng/rtl8812au -b v5.2.20
cd rtl*
sed -i 's/CONFIG_PLATFORM_I386_PC = y/CONFIG_PLATFORM_I386_PC = n/g' Makefile
sed -i 's/CONFIG_PLATFORM_ARM64_RPI = n/CONFIG_PLATFORM_ARM64_RPI = y/g' Makefile
make
sudo cp 8812au.ko /lib/modules/`uname -r`/kernel/drivers/net/wireless
sudo depmod -a
sudo modprobe 88XXau

Source: https://github.com/aircrack-ng/rtl8812au.

  • I tried as you said and I got an error while invoking make, see edited post thanks! – ndarkness Feb 1 at 16:30

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