The latest articles on DEV Community by Misha Kushka (@kushkamisha). https://dev.to/kushkamisha https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F528792%2F08cfc8db-6b68-426e-9b07-4475db169824.jpeg https://dev.to/kushkamisha en Misha Kushka Tue, 24 Feb 2026 13:33:00 +0000 https://dev.to/kushkamisha/i-finally-fixed-dell-monitor-brightness-on-my-macbook-apple-silicon-3b26 https://dev.to/kushkamisha/i-finally-fixed-dell-monitor-brightness-on-my-macbook-apple-silicon-3b26 <p>If you use a <strong>Dell monitor with a MacBook (M1/M2/M3)</strong>, you know the pain:</p> <ul> <li>Brightness keys only affect the MacBook</li> <li>External monitor stays blinding</li> <li>Popular apps are laggy or broken on Apple Silicon</li> </ul> <p>So I built a fix.</p> <h3> What it does </h3> <p>A tiny <strong>CLI tool</strong> that automatically syncs your <strong>Dell monitor brightness</strong> with your MacBook — smoothly, in real time, no UI.</p> <p>Runs silently in the background. Set once, forget forever.</p> <h3> One-command setup </h3> <div class="highlight js-code-highlight"> <pre class="highlight shell"><code>bash &lt;<span class="o">(</span>curl <span class="nt">-sL</span> https://raw.githubusercontent.com/kushkamisha/dell-brightness-sync/main/install.sh<span class="o">)</span> </code></pre> </div> <p>Or run instantly:<br> </p> <div class="highlight js-code-highlight"> <pre class="highlight shell"><code>npx @mkushka/dell-brightness-sync </code></pre> </div> <h3> How it works </h3> <ul> <li>Reads <em>actual</em> Mac brightness via <code>corebrightnessdiag</code> </li> <li>Controls Dell monitors via hardware DDC/CI (<code>m1ddc</code>)</li> <li>No Electron, no accessibility hacks, no permissions hell</li> </ul> <h3> Links </h3> <ul> <li>GitHub: <a href="https://github.com/kushkamisha/dell-brightness-sync" rel="noopener noreferrer">https://github.com/kushkamisha/dell-brightness-sync</a> </li> <li>npm: <a href="https://www.npmjs.com/package/@mkushka/dell-brightness-sync" rel="noopener noreferrer">https://www.npmjs.com/package/@mkushka/dell-brightness-sync</a> </li> </ul> <p>Open-source. MIT. Built because I was annoyed 😄</p> showdev node opensource tooling