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Wireless 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 open"><span>Methods</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/Laptops/trackpad-methods/prebuilt.html" class="sidebar-link">Prebuilt</a></li><li><a href="/Getting-Started-With-ACPI/Laptops/trackpad-methods/manual.html" aria-current="page" class="active sidebar-link">Manual</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/Getting-Started-With-ACPI/Laptops/trackpad-methods/manual.html#finding-the-acpi-path" class="sidebar-link">Finding the ACPI path</a></li><li class="sidebar-sub-header"><a href="/Getting-Started-With-ACPI/Laptops/trackpad-methods/manual.html#edits-to-the-sample-ssdt" class="sidebar-link">Edits to the sample SSDT</a></li><li class="sidebar-sub-header"><a href="/Getting-Started-With-ACPI/Laptops/trackpad-methods/manual.html#compiling-the-ssdt" class="sidebar-link">Compiling the SSDT</a></li><li class="sidebar-sub-header"><a href="/Getting-Started-With-ACPI/Laptops/trackpad-methods/manual.html#wrapping-up" class="sidebar-link">Wrapping up</a></li></ul></li></ul></section></li><li><a href="/Getting-Started-With-ACPI/Laptops/laptop-disable.html" class="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="fixing-trackpads-manual"><a href="#fixing-trackpads-manual" class="header-anchor">#</a> Fixing Trackpads: Manual</h1> <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> <li><a href="#wrapping-up">Wrapping up</a></li></ul> <h2 id="finding-the-acpi-path"><a href="#finding-the-acpi-path" class="header-anchor">#</a> Finding the ACPI path</h2> <p>Finding the ACPI pathing is quite easy actually, first open your decompiled DSDT you got from <a href="/Getting-Started-With-ACPI/Manual/dump.html">Dumping the DSDT</a> and <a href="/Getting-Started-With-ACPI/Manual/compile.html">Decompiling and Compiling</a> with either maciASL(if in macOS) or any other text editor if in Windows or Linux(VSCode has an <a href="https://marketplace.visualstudio.com/items?itemName=Thog.vscode-asl" target="_blank" rel="noopener noreferrer">ACPI extension<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> that can also help).</p> <p>Next search for <code>Device (GPI0)</code>. Should give you a result similar to this:</p> <p><img src="/Getting-Started-With-ACPI/assets/img/gpi0.b0e0b8d8.png" alt=""></p> <p>What we care about from this is the <code>_STA</code> method:</p> <div class="language- extra-class"><pre class="language-text"><code>Method (_STA, 0, NotSerialized)
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{
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If ((GPHD == One))
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{
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Return (0x03)
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}
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Return (0x0F)
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}
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</code></pre></div><p>What we want is for this to always return <code>0x0F</code> when booting macOS, so we want to make an SSDT that will return <code>GPHD == Zero</code> in macOS.</p> <p><strong>NOTE that you may have the other way around where GPHD needs to be set as <code>One</code> to return <code>0x0F</code></strong>. And your device name may also be different, don't throw random SSDTs in thinking it'll work</p> <p>Here's some more examples:</p> <p><img src="/Getting-Started-With-ACPI/assets/img/gpi0-2.8c3726d3.png" alt=""></p> <p>With this example, we can see that we need both <code>SBRG</code> and <code>GPEN</code> to return <code>One</code>. If only one is present, it'll create some issues so in our SSDT we'll want to have both of them return <code>One</code>:</p> <h2 id="edits-to-the-sample-ssdt"><a href="#edits-to-the-sample-ssdt" class="header-anchor">#</a> Edits to the sample SSDT</h2> <p>Now that we have our ACPI path, lets grab our SSDT and get to work:</p> <ul><li><a href="https://github.com/dortania/Getting-Started-With-ACPI/blob/master/extra-files/decompiled/SSDT-GPI0.dsl" target="_blank" rel="noopener noreferrer">SSDT-GPI0.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></li></ul> <p>From the second example, we'll want to set both GPEN and SBRG to <code>One</code> to allow it to operate in macOS:</p> <p><strong>Before</strong>:</p> <div class="language- extra-class"><pre class="language-text"><code>If (_OSI ("Darwin"))
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{
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GPEN = One <- Proper variables
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}
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</code></pre></div><p><img src="/Getting-Started-With-ACPI/assets/img/ssdt-before.b64846c1.png" alt=""></p> <p>Following the example pathing we found, the SSDT should look something like this:</p> <p><strong>After</strong>:</p> <div class="language- extra-class"><pre class="language-text"><code>If (_OSI ("Darwin"))
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{
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GPEN = One <- Change to the right variables
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SBRG = One <- Change to the right variables
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}
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</code></pre></div><p><img src="/Getting-Started-With-ACPI/assets/img/ssdt-after.9ea3604d.png" alt=""></p> <h2 id="compiling-the-ssdt"><a href="#compiling-the-ssdt" class="header-anchor">#</a> Compiling the SSDT</h2> <p>With the SSDT done, you're now <a href="/Getting-Started-With-ACPI/Manual/compile.html">ready to compile the SSDT!</a></p> <h2 id="wrapping-up"><a href="#wrapping-up" class="header-anchor">#</a> Wrapping up</h2> <p>Once you're done making your SSDT, either head to the next page to finish the rest of the SSDTs or head here if you're ready to wrap up:</p> <ul><li><a href="/Getting-Started-With-ACPI/cleanup.html"><strong>Cleanup</strong></a></li></ul></div> <footer class="page-edit"><!----> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">10/5/2020, 4:27:53 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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