Isso funcionará para a maioria dos kernels Linux Mint
sudo apt-get git build-essential linux-headers-generic
git clone https://github.com/lwfinger/rtlwifi_new.git
cd rtlwifi_new
make
sudo make install
cd ~
git clone -b troy https://github.com/lwfinger/rtl8723au_bt.git
cd rtl8723au_bt-troy
make
sudo make install
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