Edite esses arquivos dkms.conf:
para o rtl8812au ...
sudo -H gedit /usr/src/rtl8812au-4.3.8.12175.20140902+dfsg/dkms.conf
sudo -H gedit /var/lib/dkms/rtl8812au/4.3.8.12175.20140902+dfsg/build/dkms.conf
para o rtl8814au ...
sudo -H gedit /usr/src/rtl8814au-4.3.17.13720.20150622_beta_led/dkms.conf
sudo -H gedit /var/lib/dkms/rtl8814au/4.3.17.13720.20150622_beta_led/build/dkms.conf
e substitua:
MAKE="'make' all"
com esta linha:
MAKE[0]="'make' all KVER=${kernelver}"