Rtl8812au: v5.3.4 build not working on Ubuntu 18.04 kernel 4.15.0-36

[etem]

When built with both RTL8812A=y, RTL8821A=y and RTL8814A=y options the driver is loaded but I can't see any networks. Restarting Network manager makes no difference:

Without the RTL8814A switch I'm getting this warning message on compilation:

WARNING: "mpt_ProSetPMacTx" [/var/lib/dkms/rtl8812au/5.3.4/build/8812au.ko] undefined!
make.log

Dmesg errors after loading the module(compiled with RTL8814A=n):

I'm using a Comfast CF-915AC adapter with RTL8811AU chipset.

[kimocoder]

The error should now be fixed. Try again

[fariouche]

I will try the 8811 as soon as I have some free time, I thin I have the chipset at hand

[fariouche]

ok, got it working by removing 8814 and 8812 support. (in fact it the 8812 that interfere with the 8821 code)
Most likely a conflicting flag somewhere. This may take time to find the exact flag, but hopefully not hard to fix

[fariouche]

found it, again, a bug in the original realtek driver code.
It is a easy fix. (wrong firmware loaded - lol -)
I will cleanup tomorrow and push the fix

[etem]

@fariouche what would be the correct way for compiling the driver for the 8811 chip? Should I only turn on the CONFIG_RTL8821A = y switch in the Makefile?

[fariouche]

it should now work out of the box. It is fixed and pushed a few minutes ago in branch 5.3.4

[kimocoder]

This issue has been resolved.

Use "git pull" to update, compile and build again (make && make install)
Then reload it with "modprobe -r 88Xxau" and "modprobe 88XXau" or simpelt by rebooting.

Closing

[etem]

I will have the chance to test this after a week. Thank you very much!