Realtek Rtl8188eu Wireless Lan 80211n Usb 20 Network Adapter Driver

: Always reboot to ensure the new driver initializes properly. Pro Tips for Linux (Ubuntu/Debian)

: In some Raspberry Pi or Linux environments, the adapter may only function correctly if the (Wireless Extensions) driver option is explicitly used by wpa_supplicant , rather than the modern Raspberry Pi Forums Conclusion : Always reboot to ensure the new driver

Internet works, you close laptop lid, open it, and the adapter is gone. Solution: Disable selective suspend. you close laptop lid

Many RTL8188EU disconnects are actually router-side issues. Ensure your router's 802.11n mode is set to "Up to 300 Mbps" (even though your adapter is 150 Mbps) and disable "WMM (Wi-Fi Multimedia) Power Save" on the router if available. : Always reboot to ensure the new driver