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@@ -71,10 +71,10 @@
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<link rel="next" href="laptop-disable.html" />
<link rel="next" href="trackpad-methods/prebuilt.html" />
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<ul class="articles">
<li class="chapter " data-level="5.1.1" data-path="backlight-methods/prebuilt.html">
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Prebuilt
</a>
</li>
<li class="chapter " data-level="5.1.2" data-path="backlight-methods/manual.html">
<a href="backlight-methods/manual.html">
Manual
</a>
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</ul>
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<ul class="articles">
<li class="chapter " data-level="5.2.1" data-path="trackpad-methods/prebuilt.html">
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Prebuilt
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<li class="chapter " data-level="5.2.2" data-path="trackpad-methods/manual.html">
<a href="trackpad-methods/manual.html">
Manual
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Prebuilt
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SSDTTime
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Manual
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SSDTTime
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Manual
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Manual
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Manual
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<section class="normal markdown-section">
<blockquote>
<p><em>Last modified: Fri May 29 2020 01:27:44 GMT+0000 (Coordinated Universal Time)</em></p>
<p><em>Last modified: Sun May 31 2020 05:55:38 GMT+0000 (Coordinated Universal Time)</em></p>
</blockquote>
<h1 id="fixing-trackpads"><a name="fixing-trackpads" class="plugin-anchor" href="#fixing-trackpads"><i class="fa fa-link" aria-hidden="true"></i></a>Fixing Trackpads</h1>
<h1 id="fixing-trackpads-ssdt-gpi0xosi"><a name="fixing-trackpads-ssdt-gpi0xosi" class="plugin-anchor" href="#fixing-trackpads-ssdt-gpi0xosi"><i class="fa fa-link" aria-hidden="true"></i></a>Fixing Trackpads (SSDT-GPI0/XOSI)</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></li>
</ul>
<h2 id="what-this-ssdt-does"><a name="what-this-ssdt-does" class="plugin-anchor" href="#what-this-ssdt-does"><i class="fa fa-link" aria-hidden="true"></i></a>What this SSDT does</h2>
<p>This SSDT is used to force enable our GPI0 for VoodooI2C to connect onto.</p>
<p>With most modern laptop DSDTs, there&apos;s a variable called <code>GPEN</code> or <code>GPHD</code> which are used for setting the status of the GPI0 device. For us, we want to enable the device.</p>
<h2 id="finding-our-gpi0"><a name="finding-our-gpi0" class="plugin-anchor" href="#finding-our-gpi0"><i class="fa fa-link" aria-hidden="true"></i></a>Finding our GPI0</h2>
<p>So first things we need to do is find out what variable is used to enable our GPI0 device, lets open up our decompiled SSDT and search for <code>Device (GPI0)</code>. Should give you a desult similar to this:</p>
<p><img src="../images/Laptops/trackpad-md/gpi0.png" alt=""></p>
<p>What we care about from this is the <code>_STA</code> method:</p>
<pre><code>Method (_STA, 0, NotSerialized)
{
If ((GPHD == One))
{
Return (0x03)
}
Return (0x0F)
}
</code></pre><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&apos;t throw random SSDTs in thinking it&apos;ll work</p>
<p>Once you found the variable and what it should be set to, grab a copy of <a href="https://github.com/dortania/Getting-Started-With-ACPI/blob/master/extra-files/decompiled/SSDT-GPI0.dsl" target="_blank">SSDT-GPI0.dsl</a> and make the required edits. Then clean up with compiling it</p>
<h2 id="more-examples"><a name="more-examples" class="plugin-anchor" href="#more-examples"><i class="fa fa-link" aria-hidden="true"></i></a>More examples</h2>
<p><img src="../images/Laptops/trackpad-md/gpi0-2.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&apos;ll create some issues so in our SSDT we&apos;ll want to have both of them return <code>One</code>:</p>
<pre><code>DefinitionBlock(&quot;&quot;, &quot;SSDT&quot;, 2, &quot;ACDT&quot;, &quot;GPI0&quot;, 0)
{
External(GPEN, FieldUnitObj)
External(SBRG, FieldUnitObj)
Scope (\)
{
If (_OSI (&quot;Darwin&quot;))
{
GPEN = One
SBRG = One
}
}
}
</code></pre><h2 id="gpio-troubleshooting"><a name="gpio-troubleshooting" class="plugin-anchor" href="#gpio-troubleshooting"><i class="fa fa-link" aria-hidden="true"></i></a>GPIO Troubleshooting</h2>
<p>So if you&apos;re still having issues enabling your trackpad in macOS, you can try removing SSDT-GPIO and instead swap for the following. Note that using these 2 will most likely break Windows and Linux so only use XOSI when troubleshooting:</p>
<h2 id="methods-to-make-this-ssdt"><a name="methods-to-make-this-ssdt" class="plugin-anchor" href="#methods-to-make-this-ssdt"><i class="fa fa-link" aria-hidden="true"></i></a>Methods to make this SSDT</h2>
<p>For the trackpad fix, there are 2 methods you can choose from:</p>
<ul>
<li><p><a href="https://github.com/dortania/Getting-Started-With-ACPI/blob/master/extra-files/compiled/SSDT-XOSI.aml" target="_blank">SSDT-XOSI</a></p>
</li>
<li><p>XOSI Rename:</p>
</li>
<li><a href="trackpad-methods/prebuilt.html">Prebuilt</a></li>
<li><a href="trackpad-methods/manual.html">Manual</a></li>
</ul>
<table>
<thead>
<tr>
<th style="text-align:left">Comment</th>
<th style="text-align:left">String</th>
<th style="text-align:left">Change _OSI to XOSI</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align:left">Enabled</td>
<td style="text-align:left">Boolean</td>
<td style="text-align:left">YES</td>
</tr>
<tr>
<td style="text-align:left">Count</td>
<td style="text-align:left">Number</td>
<td style="text-align:left">0</td>
</tr>
<tr>
<td style="text-align:left">Limit</td>
<td style="text-align:left">Number</td>
<td style="text-align:left">0</td>
</tr>
<tr>
<td style="text-align:left">Find</td>
<td style="text-align:left">Data</td>
<td style="text-align:left">5f4f5349</td>
</tr>
<tr>
<td style="text-align:left">Replace</td>
<td style="text-align:left">Data</td>
<td style="text-align:left">584f5349</td>
</tr>
</tbody>
</table>
</section>
@@ -610,12 +781,12 @@
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