$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }

How to Install EDIMAX EW-7822UAD/ULC/UTC Driver on GNU/Linux Distros

GNU/Linux EDIMAX EW-7822UAD/ULC/UTC Wi-fi Driver Setup Guide

The linked Tutorial Shows You Step-by-Step How to Install EDIMAX EW-7822UAD/ULC/UTC Wireless AC1200 USB Dongle Driver in GNU/Linux Distributions.

And the Linux EDIMAX EW-7822UAD/ULC/UTC Setup is based on the Realtek rtl8812BU Chipset Driver Installation.

So the linked guide explain How to Download and Install the rtl8812BU Linux Driver.

In case to check your Adapter Chipset see: How to Check Wireless Device ID on GNU/Linux.

How to Install EDIMAX EW-7822UAD/ULC/UTC Driver on GNU/Linux Distros

GNU/Linux EDIMAX EW-7822UAD/ULC/UTC WiFi Driver Installation Guide