https://lyndeno.ca/tags/tutorial/ Recent content in Tutorial on Lyndon Sanche Hugo en-us Thu, 29 Oct 2020 16:30:00 -0600 https://lyndeno.ca/posts/2020/10-oct/2020-10-29-setting-up-external-monitor-brightness/ Thu, 29 Oct 2020 16:30:00 -0600 https://lyndeno.ca/posts/2020/10-oct/2020-10-29-setting-up-external-monitor-brightness/ <p>This will be the first technical post on my website. I will use this post to describe the process in setting up external brightness control in Sway on Arch Linux.</p> <h2 id="background">Background</h2> <p>Kernel 5.9 added improved I2C support to Navi 10 cards<sup id="fnref:1"><a href="#fn:1" class="footnote-ref" role="doc-noteref">1</a></sup>, which include the Radeon RX 5600XT. Using I2C in combination with <a href="https://www.archlinux.org/packages/community/x86_64/ddcutil/">ddcutil</a> can allow us to control an external monitors brightness using commands.</p> <h2 id="using-ddcutil">Using ddcutil</h2> <h3 id="detecting-monitors">Detecting Monitors</h3> <p>First we need to make sure that the <code>i2c-dev</code> module is loaded into the system; In my case, it was loaded automatically. We now want to identify the monitors:</p>