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Wireless Buyers Guide
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GPU Buyers Guide
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Anti Buyers Guide
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<svg xmlns="http://www.w3.org/2000/svg" aria-labelledby="outbound-link-title" role="img" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><title id="outbound-link-title">(opens new window)</title> <path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg></a></nav> <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Introduction</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/" aria-current="page" class="sidebar-link">Getting Started With ACPI</a></li><li><a href="/Getting-Started-With-ACPI/ssdt-platform.html" class="sidebar-link">Choosing the SSDTs</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Methods</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/ssdt-methods/ssdt-methods.html" class="sidebar-link">How to create SSDTs</a></li><li><section class="sidebar-group is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/ssdt-methods/ssdt-prebuilt.html" class="sidebar-link">Pre-Built SSDTs</a></li><li><a href="/Getting-Started-With-ACPI/ssdt-methods/ssdt-easy.html" class="sidebar-link">SSDTs: The easy way</a></li><li><a href="/Getting-Started-With-ACPI/ssdt-methods/ssdt-long.html" class="sidebar-link">SSDTs: The long way</a></li></ul></section></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Manual</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/Manual/dump.html" class="sidebar-link">Getting a copy of our DSDT</a></li><li><a href="/Getting-Started-With-ACPI/Manual/compile.html" class="sidebar-link">Compiling and decompiling ACPI Tables</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Desktop</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/Desktops/desktop-disable.html" class="sidebar-link">Disabling desktop dGPUs</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>Laptop</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/Laptops/backlight.html" class="sidebar-link">Fixing Backlight</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Laptops/trackpad.html" class="sidebar-link">Fixing Trackpad</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Laptops/laptop-disable.html" aria-current="page" class="active sidebar-link">Disabling laptop dGPUs</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Universal</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/Universal/ec-fix.html" class="sidebar-link">Embedded Controller</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Universal/plug.html" class="sidebar-link">CPU Power Management</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Universal/awac.html" class="sidebar-link">AWAC vs RTC</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Universal/nvram.html" class="sidebar-link">NVRAM PMC</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Universal/rhub.html" class="sidebar-link">USB RHUB</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Universal/imei.html" class="sidebar-link">IMEI</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Universal/smbus.html" class="sidebar-link">Fixing SMBus Support</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Methods</span> <span class="arrow right"></span></p> <!----></section></li><li><a href="/Getting-Started-With-ACPI/Universal/irq.html" class="sidebar-link">IRQ Fix</a></li><li><a href="/Getting-Started-With-ACPI/Universal/spoof.html" class="sidebar-link">GPU Spoof</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Cleanup</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/cleanup.html" class="sidebar-link">Cleanup</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Misc</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/troubleshooting.html" class="sidebar-link">Troubleshooting</a></li><li><a href="/Getting-Started-With-ACPI/CONTRIBUTING.html" class="sidebar-link">Contributing</a></li></ul></section></li></ul> </aside> <main class="page"> <div class="theme-succinct-content content__default"><h1 id="disabling-laptop-dgpus-ssdt-dgpu-off-nohybgfx"><a href="#disabling-laptop-dgpus-ssdt-dgpu-off-nohybgfx" class="header-anchor">#</a> Disabling laptop dGPUs (SSDT-dGPU-Off/NoHybGfx)</h1> <ul><li><a href="#what-this-ssdt-does">What this SSDT does</a></li> <li><a href="#methods-to-make-this-ssdt">Methods to make this SSDT</a> <ul><li><a href="#prebuilts">Prebuilt</a></li> <li><a href="#ssdttime">SSDTTime</a></li> <li><a href="#manual">Manual</a> <ul><li><a href="#finding-the-acpi-path">Finding the ACPI path</a></li> <li><a href="#edits-to-the-sample-ssdt">Edits to the sample SSDT</a></li> <li><a href="#compiling-the-ssdt">Compiling the SSDT</a></li></ul></li></ul></li></ul> <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'll be going over 2 methods for disabling the dGPU in a laptop:</p> <ul><li><a href="/Getting-Started-With-ACPI/Laptops/laptop-disable.html#optimus-method">Optimus Method</a></li> <li><a href="/Getting-Started-With-ACPI/Laptops/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"><a href="#optimus-method" class="header-anchor">#</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's, the Optimus method should work for most users:</p> <p>To start, grab <a href="https://github.com/dortania/Getting-Started-With-ACPI/blob/master/extra-files/decompiled/SSDT-dGPU-Off.dsl.zip" target="_blank" rel="noopener noreferrer">SSDT-dGPU-Off.dsl<svg xmlns="http://www.w3.org/2000/svg" aria-labelledby="outbound-link-title" role="img" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><title id="outbound-link-title">(opens new window)</title> <path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg></a></p> <p>Next we need to get on Windows, and head to the following:</p> <div class="language- extra-class"><pre class="language-text"><code>Device Manager -> Display Adapters -> dGPU -> Properties -> Details > BIOS device name
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</code></pre></div><ul><li>Note some GPUs may be hiding under "BIOS device name"</li></ul> <p>This should provided you with an ACPI path for your dGPU, most commonly:</p> <ul><li>Nvidia dGPU: <code>\_SB.PCI0.PEG0.PEGP</code></li> <li>AMD dGPU: <code>\_SB.PCI0.PEGP.DGFX</code></li></ul> <p><img src="/Getting-Started-With-ACPI/assets/img/nvidia.672e8e16.png" alt="Credit to 1Revenger1 for the image"></p> <p>Now with that, we'll need to change the ACPI path in the SSDT. Main sections:</p> <div class="language- extra-class"><pre class="language-text"><code>External(_SB.PCI0.PEG0.PEGP._OFF, MethodObj)
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</code></pre></div><div class="language- extra-class"><pre class="language-text"><code>If (CondRefOf(\_SB.PCI0.PEG0.PEGP._OFF)) { \_SB.PCI0.PEG0.PEGP._OFF() }
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</code></pre></div><p>Once adapted to your config, head to the compile section</p> <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" rel="noopener noreferrer">Rehabman thread<svg xmlns="http://www.w3.org/2000/svg" aria-labelledby="outbound-link-title" role="img" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><title id="outbound-link-title">(opens new window)</title> <path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg></a></li></ul> <h2 id="bumblebee-method"><a href="#bumblebee-method" class="header-anchor">#</a> Bumblebee Method</h2> <p>With some machines, the simple <code>.off</code> call won't keep the card off properly, that'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/dortania/Getting-Started-With-ACPI/blob/master/extra-files/decompiled/SSDT-NoHybGfx.dsl.zip" target="_blank" rel="noopener noreferrer">SSDT-NoHybGfx.dsl<svg xmlns="http://www.w3.org/2000/svg" aria-labelledby="outbound-link-title" role="img" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><title id="outbound-link-title">(opens new window)</title> <path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg></a></p> <p>Next we need to get on Windows, and head to the following:</p> <div class="language- extra-class"><pre class="language-text"><code>Device Manager -> Display Adapters -> dGPU -> Properties -> Details > BIOS device name
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</code></pre></div><p>This should provided you with an ACPI path for your dGPU, most commonly:</p> <ul><li>Nvidia dGPU: <code>\_SB.PCI0.PEG0.PEGP</code></li> <li>AMD dGPU: <code>\_SB.PCI0.PEGP.DGFX</code></li></ul> <p>Now with that, we'll need to change the ACPI path in the SSDT. Main sections:</p> <div class="language- extra-class"><pre class="language-text"><code>External (_SB_.PCI0.PEG0.PEGP._DSM, MethodObj) // dGPU ACPI Path
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External (_SB_.PCI0.PEG0.PEGP._PS3, MethodObj) // dGPU ACPI Path
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</code></pre></div><div class="language- extra-class"><pre class="language-text"><code>If ((CondRefOf (\_SB.PCI0.PEG0.PEGP._DSM) && CondRefOf (\_SB.PCI0.PEG0.PEGP._PS3)))
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</code></pre></div><div class="language-text extra-class"><pre class="language-text"><code> // Card Off Request
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\_SB.PCI0.PEG0.PEGP._DSM (ToUUID ("a486d8f8-0bda-471b-a72b-6042a6b5bee0"), 0x0100, 0x1A, Buffer (0x04)
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</code></pre></div><div class="language- extra-class"><pre class="language-text"><code> // Card Off
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\_SB.PCI0.PEG0.PEGP._PS3 ()
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</code></pre></div><p>Once adapted to your config, head to the compile section</p> <h2 id="now-you-re-ready-to-compile-the-ssdt"><a href="#now-you-re-ready-to-compile-the-ssdt" class="header-anchor">#</a> <a href="/Getting-Started-With-ACPI/Manual/compile.html">Now you're ready to compile the SSDT!</a></h2></div> <footer class="page-edit"><!----> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">7/17/2020, 8:46:53 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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