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

How to Find Sound Card Name on GNU/Linux Distros

GNU/Linux Checking Sound Card Model Guide

How to Get Sound Card Info on GNU/Linux desktops – Step by step Tutorials.

And to Check Audio Devices Name in Linux easily I make use of the lspci Command Line Tool.

The lspci (list PCI) Linux command displays information about each PCI Bus on your system.

This includes information about the Devices connected to the PCI Subsystem.

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GNU/Linux Checking Audio Device Name Guides