Wireless antenna does not appear despite its driver being installed

Solution 1:

First, verify that the module installed correctly:

sudo dkms status

We hope we see:

rtl8812AU, 5, 4.10.0-26-generic, x86_64: installed

Or similar.

Verify that the installed module covers your device, which is:

ID 0bda:a811 Realtek Semiconductor Corp. 

Run, in the terminal:

modinfo 8812au | grep A811

We hope we see:

alias:          usb:v7392pA811d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0BDApA811d*dc*dsc*dp*ic*isc*ip*in*

Note that the second alias, 0BDA with A811 covers your device.

Is the module loaded?

lsmod | grep 8812

If not, load it:

sudo modprobe 8812au

Are there any errors or warnings you can post? Or does the wireless come to life? If not, check the log for informative messages:

dmesg | grep -i -e rtl -e 8812

EDIT: We see the problem here:

modprobe: ERROR: could not insert '8812au': Exec format error

I suggest that you correct it with:

 sudo apt-get purge rtl8812au-dkms 
 sudo apt-get install rtl8812au-dkms
 sudo modprobe 8812au

If there are errors or warnings, please post them.

EDIT2: I suggest that we try another approach.

sudo apt-get purge rtl8812au-dkms 
sudo apt-get install git
git clone https://github.com/jeremyb31/rtl8812AU.git
sudo dkms add ./rtl8812AU
sudo dkms install rtl8812AU/5

Reboot and let us hear your report.