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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"><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" class="sidebar-link">Disabling laptop dGPUs</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>Universal</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/Getting-Started-With-ACPI/Universal/ec-fix.html" aria-current="page" class="active 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/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-embedded-controller-ssdt-ec-usbx"><a href="#fixing-embedded-controller-ssdt-ec-usbx" class="header-anchor">#</a> Fixing Embedded Controller (SSDT-EC/USBX)</h1> <ul><li><a href="#fixing-embedded-controller-ssdt-ecusbx">Fixing Embedded Controller (SSDT-EC/USBX)</a> <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></li></ul> <h2 id="what-this-ssdt-does"><a href="#what-this-ssdt-does" class="header-anchor">#</a> What this SSDT does</h2> <p>The purpose of SSDT-EC/UBX is a couple things:</p> <ul><li>On desktops, the EC(or better known as the embedded controller) isn't compatible with AppleACPIEC driver, to get around this we disable this device when running macOS</li> <li>AppleBusPowerController will look for a device named <code>EC</code>, so we will want to create a fake device for this kext to load onto
<ul><li>AppleBusPowerController also requires a USBX device to supply USB power properties for Skylake and newer, so we will bundle this device in with the EC fix</li></ul></li> <li>On laptops, the EC is used for hotkeys and battery so disabling this isn't all too ideal. Problem is our EC's name isn't compatible, so we will create a simple &quot;fake&quot; EC device that will satisfy Apple</li></ul> <p>So TL;DR:</p> <ul><li>EC is embedded controller</li> <li>Desktops will want real EC off, and a fake EC created</li> <li>Laptops will just want an additional fake EC present</li> <li>Skylake and newer devices will want USBX as well</li></ul> <h2 id="methods-to-make-this-ssdt"><a href="#methods-to-make-this-ssdt" class="header-anchor">#</a> Methods to make this SSDT</h2> <p>For the EC fix, there are 3 methods you can choose from:</p> <ul><li><a href="/Getting-Started-With-ACPI/Universal/ec-methods/prebuilt.html">Prebuilt</a> <ul><li>The prebuilt for desktops are very bloated. It's recommended to use the two methods below.</li> <li>The Laptop prebuilts are easily usable.</li></ul></li> <li><a href="/Getting-Started-With-ACPI/Universal/ec-methods/ssdttime.html">SSDTTime</a> <ul><li>Note this method does not support <strong>laptops</strong>, <strong>servers</strong> or <strong>HEDT systems</strong></li></ul></li> <li><a href="/Getting-Started-With-ACPI/Universal/ec-methods/manual.html">Manual</a></li></ul></div> <footer class="page-edit"><!----> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">6/18/2020, 3:32:02 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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