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        <section><h1>Enabling Audio in Arch Linux</h1><blockquote>Mon 31st August 2020 By David T. Sadler.</blockquote><p>If you have recently installed Arch Linux you may have found that there is no sound when playing media. This is because by default ALSA has all channels muted.</p><h2>Installing the ALSA Utilities</h2><p>The Advanced Linux Sound Architecture (ALSA) is the part of the Linux kernel that manages the sound devices on your system. In addition to this the project also provides several command-line utilities that allow you to configure these devices. These can be installed with pacman.</p><pre><code class="shell">$ sudo pacman -S alsa-utils</code></pre><h2>Unmuting The Channels</h2><p>Channels can be unmuted with amixer.</p><pre><code class="shell">$ amixer sset Master unmute
$ amixer sset Speaker unmute
$ amixer sset Headphone unmute</code></pre><p>You can test that the speakers are working with the speaker-test command.</p><pre><code class="shell">$ speaker-test -c 2</code></pre><p>If you are still getting no sound then it could be that the volume has been set to zero. Use amixer again to increase the volume.</p><pre><code class="shell">$ amixer sset Master 100%
$ amixer sset Speaker 100%
$ amixer sset Headphone 100%</code></pre><h2>Unmute with Alsamixer</h2><p>If you prefer a more intuitive ncurses interface you can use alsamixer.</p><pre><code class="shell">$ alsamixer</code></pre><p>Channels that are muted will have the MM label below them. Unmuted channels have 00.</p><p>Use the ← and → keys to scroll to the muted channel and press m to unmute it.</p><p>The volume can be increased and decreased with the ↑ and ↓ keys.</p><h3>Links</h3><a href="/posts/arch/2020-05-25/installing-arch-linux-on-a-x220-thinkpad/">Installing Arch Linux on a Thinkpad X220.</a><a href="/posts/arch/">Arch - Read More Posts.</a><p>I don&#039;t have comments as I don&#039;t want to manage them. You can however contact me at the below address if you want to.</p><a href="mailto:david@davidtsadler.com">Email david@davidtsadler.com</a><h3>License</h3><a href="https://creativecommons.org/licenses/by-sa/4.0/">The contents of this site is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.</a><p>Copyright © 2021 David T. Sadler.</p><a href="/">Return to Homepage.</a></section>
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