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<h1 id="disabling-laptop-dgpus">Disabling laptop dGPUs</h1>
<blockquote>
<p><em>Last modified: Tue Apr 14 2020 01:19:11 GMT+0000 (Coordinated Universal Time)</em></p>
</blockquote>
<h1 id="disabling-laptop-dgpus"><a name="disabling-laptop-dgpus" class="plugin-anchor" href="#disabling-laptop-dgpus"><i class="fa fa-link" aria-hidden="true"></i></a>Disabling laptop dGPUs</h1>
<p>So with laptops, we can hide the dGPU from macOS with the little boot-arg called <code>-wegnoegpu</code> from WhateverGreen. But one small problem, the dGPU is still pulling power draining your battery slowly. We&apos;ll be going over 2 methods for disabling the dGPU in a laptop:</p>
<ul>
<li><a href="laptop-disable.html#optimus-method">Optimus Method</a></li>
<li><a href="laptop-disable.html#bumblebee-method">Bumblebee Method</a></li>
</ul>
<p>Note that this is not needed for install, but recommended for post-install</p>
<h2 id="optimus-method">Optimus Method</h2>
<h2 id="optimus-method"><a name="optimus-method" class="plugin-anchor" href="#optimus-method"><i class="fa fa-link" aria-hidden="true"></i></a>Optimus Method</h2>
<p>How this works is that we call the <code>.off</code> method found on Optimus GPUs, this is the expected way to power off a GPU but some may find their dGPU will power back up later on. Mainly seen in Lenovo&apos;s, the Optimus method should work for most users:</p>
<p>To start, grab <a href="https://github.com/khronokernel/Getting-Started-With-ACPI/blob/master/extra-files/SSDT-dGPU-Off.dsl.zip" target="_blank">SSDT-dGPU-Off.dsl</a></p>
<p>Next we need to get on Windows, and head to the following:</p>
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<ul>
<li>For those with sleep issues, you can refer to the original <a href="https://www.tonymacx86.com/threads/guide-disabling-discrete-graphics-in-dual-gpu-laptops.163772/" target="_blank">Rehabman thread</a></li>
</ul>
<h2 id="bumblebee-method">Bumblebee Method</h2>
<h2 id="bumblebee-method"><a name="bumblebee-method" class="plugin-anchor" href="#bumblebee-method"><i class="fa fa-link" aria-hidden="true"></i></a>Bumblebee Method</h2>
<p>With some machines, the simple <code>.off</code> call won&apos;t keep the card off properly, that&apos;s where the Bumblebee method comes in. This SSDT will actually send the dGPU into D3 state being the lowest power state a device can support. Credit to Mameo for the original adaptation.</p>
<p>To start, grab <a href="https://github.com/khronokernel/Getting-Started-With-ACPI/blob/master/extra-files/SSDT-NoHybGfx.dsl.zip" target="_blank">SSDT-NoHybGfx.dsl</a></p>
<p>Next we need to get on Windows, and head to the following:</p>
@@ -449,11 +474,27 @@ External (_SB_.PCI0.PEG0.PEGP._PS3, MethodObj) // dGPU ACPI Path
\_SB.PCI0.PEG0.PEGP._PS3 ()
</code></pre>
<p>Once adapted to your config, head to the compile section</p>
<h2 id="now-youre-ready-to-compile-the-ssdt"><a href="../Manual/compile.html">Now you&apos;re ready to compile the SSDT!</a></h2>
<h2 id="now-youre-ready-to-compile-the-ssdt"><a name="now-youre-ready-to-compile-the-ssdt" class="plugin-anchor" href="#now-youre-ready-to-compile-the-ssdt"><i class="fa fa-link" aria-hidden="true"></i></a><a href="../Manual/compile.html">Now you&apos;re ready to compile the SSDT!</a></h2>
</section>
</div>
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