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

How to Install Radeon Open Source Driver on Debian Gnu/Linux Distro

GNU/Linux Debian Installing AMD Radeon Open Source Drivers Guide

Hi! The Tutorial shows you Step-by-Step How to Install AMD Radeon and ATI Open Source Graphics and GPU Drivers in Debian GNU/Linux Desktops.

And Open Source Radeon Graphics Drivers for Debian includes Updated Free Graphics Drivers for AMD Graphics Cards.

Especially relevant: as a complement you may be intesested also to the MESA Graphics Drivers Suite Setup.

AMD Open Source Drivers Debian Installation Guide - Featured

GNU/Linux Debian AMD Open Source Graphics Drivers Installation Guide