IMX6 with new 5GHZ wifi dongle (RTL 8812)

**Iridium** · July 27, 2017 at 6:14 PM Official Post

I purchased a new generic USB Wifi dongle with external antenna to see if I could improve on the limitations of the Cubox's internal 2.4Ghz antenna. Much to my amazement it worked straight out of the box. However after a reboot, it failed to connect with "Invalid argument" error. After a number of failed attempts (around 6), Kodi crashes and restarts.

At this point, sometime - but not always - you can connect to wlan1, having to add the passkey again, and it connects.

One problem is that I cannot delete nor edit the connection until it has connected, so I can't connect to another SSID via wlan1.

The SSID is 11 characters log with no spaces, whereas the passkey is 19 characters with spaces (If that makes any difference).

**mglae** · July 28, 2017 at 3:39 PM

A random MAC is generated on every boot. See Wifi Dongle not remembering password.

**Iridium** · July 28, 2017 at 6:23 PM Official Post

@mglae Thanks for the that - wifi seems to have started working again after a reboot. Will use the information when I get another failure.

**Iridium** · August 2, 2017 at 6:18 PM Official Post

Yes that works: The problem was a null 00:00:00:00:00 MAC address and thus a random one was being generated.

Is there anyway to set a static IP address? The connman manual suggests that you can but only on the xxxx.managed.psk file, which of course is always different on reboot.

Is this possible, as setting a DHCP reservation doesn't work or do I just have to live with dhcp?

**vpeter** · August 2, 2017 at 7:35 PM

What about if you force mac address with

Code

echo "options 8812au rtw_initmac=00:e0:4c:12:34:56" >/storage/.config/modprobe.d/8812au_mac.conf

Here is also this tip: Wifi Dongle not remembering password

**Iridium** · August 4, 2017 at 5:48 PM Official Post

vpeter : Thanks for that, worked like a charm. I set the IP via dhcp reservation in the router and it works perfectly.