lsusb | grep Realtek sudo modprobe rtl8xxxu If not automatically loaded, add USB ID:
echo "options rtl8xxxu add_loopback=1" | sudo tee /etc/modprobe.d/rtl8xxxu.conf sudo modprobe rtl8xxxu For unsupported USB IDs, compile from community source: realtek 8188gu wireless lan 802.11n usb driver
echo "0bda b711" | sudo tee /sys/bus/usb/drivers/rtl8xxxu/new_id Download firmware: lsusb | grep Realtek sudo modprobe rtl8xxxu If
sudo wget -O /lib/firmware/rtlwifi/rtl8188gu.bin \ https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/plain/rtlwifi/rtl8188gu.bin Disable USB autosuspend for stable connection: realtek 8188gu wireless lan 802.11n usb driver