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| author | Bradley Taunt <bt@btxx.org> | 2024-07-02 14:22:21 -0400 |
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| committer | Bradley Taunt <bt@btxx.org> | 2024-07-02 14:22:21 -0400 |
| commit | 3f6a9546ec13063d0d5bdf21d30a93d3e8aa6050 (patch) | |
| tree | 947985c4eda1bceb1910bc01739c32fd0baad181 /build/battery | |
| parent | 14074019d62d98885c4c764401a9e7e1fd129f79 (diff) | |
Diffstat (limited to 'build/battery')
| -rw-r--r-- | build/battery/index.html | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/build/battery/index.html b/build/battery/index.html new file mode 100644 index 0000000..524c35b --- /dev/null +++ b/build/battery/index.html @@ -0,0 +1,63 @@ +<!doctype html> +<html lang="en"> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width, initial-scale=1"> + <meta name="color-scheme" content="dark light"> + <link rel="icon" href="data:,"> + <title>Improving Laptop Battery Performance on OpenBSD</title> + <link href="/atom.xml" type="application/atom+xml" rel="alternate" title="Atom feed for blog posts" /> + <link href="/rss.xml" type="application/rss+xml" rel="alternate" title="RSS feed for blog posts" /> +<style>*{box-sizing:border-box;}body{font-family:sans-serif;line-height:1.33;margin:0 auto;max-width:650px;padding:1rem;}blockquote{background:rgba(0,0,0,0.1);border-left:4px solid;padding-left:5px;}img{max-width:100%;}pre{border:1px solid;overflow:auto;padding:5px;}table{text-align:left;width:100%;}.footnotes{font-size:90%;}</style> +</head> + +<nav> + <a href="#menu">Menu ↓</a> +</nav> + +<main> +<h1 id="improving-laptop-battery-performance-on-openbsd">Improving Laptop Battery Performance on OpenBSD</h1> +<p>2023-06-13</p> +<p>It is no secret that OpenBSD has poor battery performance on laptops. Although not as impressive as something like Alpine Linux or FreeBSD, you can tweak OpenBSD <em>just enough</em> to squeeze more life out of your machine’s battery.</p> +<h2 id="our-new-best-friend-">Our New Best Friend: <code>ampd</code></h2> +<p>I won’t go into great detail about <code>ampd</code> here - that’s what the incredible <a href="https://man.openbsd.org/apmd">documentation is for</a>. You’ll want to make sure to start it before trying to configure it:</p> +<pre><code>doas rcctl start apmd +</code></pre> +<p>If already running in a live session, you can default to <code>-A</code> (auto) but I suggest setting cpu performance to low:</p> +<pre><code>apm -L +</code></pre> +<p>To make these changes permanent on boot:</p> +<pre><code>doas rcctl set apmd flags -L +</code></pre> +<p>Optimizating battery life via <code>ampd</code> will have the most noticable impact but you can improve things even further by implementing some extra “small” performance wins.</p> +<h2 id="small-performance-wins">Small Performance Wins</h2> +<ol> +<li>Reduce your screen’s brightness (<code>xbacklight -set 50</code>)</li> +<li>Use a lightweight window manager instead of a beefer desktop environment</li> +<li>Enable battery saving options in your system BIOS (if available)</li> +<li>Disable the fingerprint scanner and bluetooth in your system BIOS (if available)</li> +<li>Use utilities such as <code>mpv</code> and <code>ffmpeg</code> for media consumption</li> +<li>Reduce the number of open applications at any given time</li> +</ol> +<footer role="contentinfo"> + <h2>Menu Navigation</h2> + <ul id="menu"> + <li><a href="/">Home</a></li> + <li><a href="/projects">Projects</a></li> + <li><a href="/uses">Uses</a></li> + <li><a href="/wiki">Wiki</a></li> + <li><a href="/resume">Resume</a></li> + <li><a href="/colophon">Colophon</a></li> + <li><a href="/now">Now</a></li> + <li><a href="/donate">Donate</a></li> + <li><a href="/atom.xml">RSS</a></li> + <li><a href="#top">↑ Top of the page</a></li> + </ul> + <small> + Built with <a href="https://barf.btxx.org">barf</a>. <br> + Feeds: <a href="/atom.xml">Atom</a> & <a href="/rss.xml">RSS</a><br> + Maintained with ♥ for the web. <br> + Proud supporter of <a href="https://usefathom.com/ref/DKHJVX">Fathom</a> & <a href="https://nextdns.io/?from=74d3p3h8">NextDNS</a>. <br> + The content for this site is <a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>.<br> The <a href="https://git.sr.ht/~bt/bt.ht">code for this site</a> is <a href="https://git.sr.ht/~bt/bt.ht/tree/master/item/LICENSE">MIT</a>. + </small> +</footer>
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