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<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><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> <span class="sr-only">(opens new window)</span></span></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="/OpenCore-Legacy-Patcher/START.html" class="sidebar-link">What is OpenCore?</a></li><li><a href="/OpenCore-Legacy-Patcher/MODELS.html" class="sidebar-link">Supported Models</a></li><li><a href="/OpenCore-Legacy-Patcher/BENIFITS.html" class="sidebar-link">Benefits and drawbacks</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Setting up</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/INSTALLER.html" class="sidebar-link">Download and build macOS Installers</a></li><li><a href="/OpenCore-Legacy-Patcher/BUILD.html" class="sidebar-link">Building and installing OpenCore</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Installation</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/BOOT.html" class="sidebar-link">Booting OpenCore and macOS</a></li><li><a href="/OpenCore-Legacy-Patcher/POST-INSTALL.html" class="sidebar-link">Post-Installation</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>macOS Monterey</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/MONTEREY-DROP.html" class="sidebar-link">macOS Monterey Support</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>Misc</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/ACCEL.html" aria-current="page" class="active sidebar-link">Working Around Legacy Acceleration Issues</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/OpenCore-Legacy-Patcher/ACCEL.html#downloading-older-non-metal-apps" class="sidebar-link">Downloading older non-Metal Apps</a></li><li class="sidebar-sub-header"><a href="/OpenCore-Legacy-Patcher/ACCEL.html#unable-to-run-zoom" class="sidebar-link">Unable to run Zoom</a></li><li class="sidebar-sub-header"><a href="/OpenCore-Legacy-Patcher/ACCEL.html#unable-to-grant-special-permissions-to-apps-ie-camera-access-to-zoom" class="sidebar-link">Unable to grant special permissions to apps (ie. Camera Access to Zoom)</a></li><li class="sidebar-sub-header"><a href="/OpenCore-Legacy-Patcher/ACCEL.html#keyboard-backlight-broken" class="sidebar-link">Keyboard Backlight broken</a></li><li class="sidebar-sub-header"><a href="/OpenCore-Legacy-Patcher/ACCEL.html#photos-and-maps-apps-heavily-distorted" class="sidebar-link">Photos and Maps Apps Heavily Distorted</a></li><li class="sidebar-sub-header"><a href="/OpenCore-Legacy-Patcher/ACCEL.html#cannot-press-done-when-editing-a-sidebar-widget" class="sidebar-link">Cannot press "Done" when editing a Sidebar Widget</a></li><li class="sidebar-sub-header"><a href="/OpenCore-Legacy-Patcher/ACCEL.html#wake-from-sleep-heavily-distorted-on-amd-ati-in-macos-11-3-and-newer" class="sidebar-link">Wake from sleep heavily distorted on AMD/ATI in macOS 11.3 and newer</a></li><li class="sidebar-sub-header"><a href="/OpenCore-Legacy-Patcher/ACCEL.html#unable-to-achieve-gpu-acceleration-on-2011-15-and-17-macbook-pros" class="sidebar-link">Unable to achieve GPU Acceleration on 2011 15" and 17" MacBook Pros</a></li></ul></li><li><a href="/OpenCore-Legacy-Patcher/TROUBLESHOOTING.html" class="sidebar-link">Troubleshooting</a></li><li><a href="/OpenCore-Legacy-Patcher/DEBUG.html" class="sidebar-link">How to debug with OpenCore</a></li><li><a href="/OpenCore-Legacy-Patcher/UPDATE.html" class="sidebar-link">Updating OpenCore and Co</a></li><li><a href="/OpenCore-Legacy-Patcher/UNINSTALL.html" class="sidebar-link">Uninstalling OpenCore</a></li><li><a href="/OpenCore-Legacy-Patcher/ICNS.html" class="sidebar-link">Creating custom icons for OpenCore and Mac Boot Picker</a></li><li><a href="/OpenCore-Legacy-Patcher/WINDOWS.html" class="sidebar-link">Installing UEFI Windows 10</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Credit</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/DONATE.html" class="sidebar-link">Supporting the patcher</a></li><li><a href="/OpenCore-Legacy-Patcher/LICENSE.html" class="sidebar-link">OpenCore Legacy Patcher Licence</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Documentation</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/TESTED.html" class="sidebar-link">Tested Models on OpenCore Legacy Patcher</a></li><li><a href="/OpenCore-Legacy-Patcher/TERMS.html" class="sidebar-link">OpenCore Patcher Terminology</a></li><li><a href="/OpenCore-Legacy-Patcher/HOW.html" class="sidebar-link">Boot Process with OpenCore Legacy Patcher</a></li><li><a href="/OpenCore-Legacy-Patcher/PATCHEXPLAIN.html" class="sidebar-link">Explaining the patches in OpenCore Legacy Patcher</a></li><li><a href="/OpenCore-Legacy-Patcher/CLI.html" class="sidebar-link">Command Line Args</a></li></ul></section></li></ul> </aside> <main class="page"> <div class="theme-succinct-content content__default"><h1 id="working-around-legacy-acceleration-issues"><a href="#working-around-legacy-acceleration-issues" class="header-anchor">#</a> Working Around Legacy Acceleration Issues</h1> <ul><li><a href="#downloading-older-non-metal-apps">Downloading older non-Metal Apps</a></li> <li><a href="#unable-to-run-zoom">Unable to run Zoom</a></li> <li><a href="#unable-to-grant-special-permissions-to-apps-ie-camera-access-to-zoom">Unable to grant special permissions to apps (ie. Camera Access to Zoom)</a></li> <li><a href="#keyboard-backlight-broken">Keyboard Backlight broken</a></li> <li><a href="#photos-and-maps-apps-heavily-distorted">Photos and Maps Apps Heavily Distorted</a></li> <li><a href="#cannot-press-done-when-editing-a-sidebar-widget">Cannot press "Done" when editing a Sidebar Widget</a></li> <li><a href="#wake-from-sleep-heavily-distorted-on-amd-ati-in-macos-11-3-and-newer">Wake from sleep heavily distorted on AMD/ATI in macOS 11.3 and newer</a></li> <li><a href="#unable-to-achieve-gpu-acceleration-on-2011-15-and-17-macbook-pros">Unable to achieve GPU Acceleration on 2011 15" and 17" MacBook Pros</a></li></ul> <p>The below page is for users experiencing issues with their overall usage of macOS Big Sur and the Legacy Graphics Acceleration patches. Note that the following GPUs currently do not have acceleration support in Big Sur:</p> <ul><li>AMD/ATI TeraScale 2 - HD5/6000 series</li> <li>Intel 3rd and 4th Gen - GMA series</li></ul> <h2 id="downloading-older-non-metal-apps"><a href="#downloading-older-non-metal-apps" class="header-anchor">#</a> Downloading older non-Metal Apps</h2> <p>Many Apple apps now have direct reliance on Metal for proper functioning, however legacy builds of these apps still do work in Big Sur. See below for archive of many apps such as Pages, iMovie, GarageBand.</p> <ul><li><a href="https://archive.org/details/apple-apps-for-non-metal-macs" target="_blank" rel="noopener noreferrer">Apple Apps for Non-Metal Macs<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><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> <span class="sr-only">(opens new window)</span></span></a></li></ul> <p>Note: This archive assumes that you own these copies of these apps through the Mac App Store, Dortania does not condone piracy</p> <h2 id="unable-to-run-zoom"><a href="#unable-to-run-zoom" class="header-anchor">#</a> Unable to run Zoom</h2> <p>Currently Zoom relies partially on Metal and so needs a small binary patch. Dosdude1 has provided a nice script for this:</p> <ul><li><a href="http://dosdude1.com/catalina/zoomnonmetal-new.command.zip" target="_blank" rel="noopener noreferrer">Zoom Non-Metal Fix<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><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> <span class="sr-only">(opens new window)</span></span></a></li></ul> <h2 id="unable-to-grant-special-permissions-to-apps-ie-camera-access-to-zoom"><a href="#unable-to-grant-special-permissions-to-apps-ie-camera-access-to-zoom" class="header-anchor">#</a> Unable to grant special permissions to apps (ie. Camera Access to Zoom)</h2> <p>Due to the usage of <code>amfi_get_out_of_my_way=1</code>, macOS will fail to prompt users for special permissions upon application start as well as omit the entires in System Preferences. To work around this, we recommend users install <a href="https://github.com/jslegendre/tccplus" target="_blank" rel="noopener noreferrer">tccplus<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><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> <span class="sr-only">(opens new window)</span></span></a> to manage permissions.</p> <p>Example usage with Discord and microphone permissions:</p> <div class="language-sh extra-class"><pre class="language-sh"><code><span class="token comment"># Open Terminal and run the following commands</span>
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<span class="token builtin class-name">cd</span> ~/Downloads/
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<span class="token function">chmod</span> +x tccplus
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./tccplus <span class="token function">add</span> Microphone com.hnc.Discord
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</code></pre></div><h2 id="keyboard-backlight-broken"><a href="#keyboard-backlight-broken" class="header-anchor">#</a> Keyboard Backlight broken</h2> <p>Due to forcing <code>hidd</code> into spinning up with the fallback mode enabled, this can break the OS's recognition of backlight keyboards. Thankfully the drivers themselves still do operate so applications such as <a href="https://www.macupdate.com/app/mac/22151/lab-tick" target="_blank" rel="noopener noreferrer">LabTick<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><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> <span class="sr-only">(opens new window)</span></span></a> are able to set the brightness manually.</p> <h2 id="photos-and-maps-apps-heavily-distorted"><a href="#photos-and-maps-apps-heavily-distorted" class="header-anchor">#</a> Photos and Maps Apps Heavily Distorted</h2> <p>Due to the Metal Backend, the enhanced color output of these apps seems to heavily break overall UI usage. To work around this, <a href="https://forums.macrumors.com/threads/macos-11-big-sur-on-unsupported-macs-thread.2242172/post-29870324" target="_blank" rel="noopener noreferrer">users reported<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><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> <span class="sr-only">(opens new window)</span></span></a> forcing the color output of their monitor from Billions to Millions of colors helped greatly. Apps easily allowing this customization are <a href="https://www.madrau.com" target="_blank" rel="noopener noreferrer">SwitchResX<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><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> <span class="sr-only">(opens new window)</span></span></a>, <a href="https://macdownload.informer.com/resxtreme/" target="_blank" rel="noopener noreferrer">ResXreme<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><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> <span class="sr-only">(opens new window)</span></span></a> and <a href="http://easyresapp.com" target="_blank" rel="noopener noreferrer">EasyRes<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><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> <span class="sr-only">(opens new window)</span></span></a>.</p> <h2 id="cannot-press-done-when-editing-a-sidebar-widget"><a href="#cannot-press-done-when-editing-a-sidebar-widget" class="header-anchor">#</a> Cannot press "Done" when editing a Sidebar Widget</h2> <p>To work around this, simply press Tab to hover over and press spacebar to simulate a click.</p> <h2 id="wake-from-sleep-heavily-distorted-on-amd-ati-in-macos-11-3-and-newer"><a href="#wake-from-sleep-heavily-distorted-on-amd-ati-in-macos-11-3-and-newer" class="header-anchor">#</a> Wake from sleep heavily distorted on AMD/ATI in macOS 11.3 and newer</h2> <p>Unfortunately a very well known issue the community is investigating, current known solution is to simply downgrade to 11.2.3 or older until a proper fix can be found.</p> <p>In the event Apple removes 11.2.3 from their catalogue, we've provided a mirror below:</p> <ul><li><a href="https://archive.org/details/install-mac-os-11.2.3-20-d-91" target="_blank" rel="noopener noreferrer">Install macOS 11.2.3 20D91<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><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> <span class="sr-only">(opens new window)</span></span></a></li></ul> <h2 id="unable-to-achieve-gpu-acceleration-on-2011-15-and-17-macbook-pros"><a href="#unable-to-achieve-gpu-acceleration-on-2011-15-and-17-macbook-pros" class="header-anchor">#</a> Unable to achieve GPU Acceleration on 2011 15" and 17" MacBook Pros</h2> <p>Currently OpenCore Legacy Patcher doesn't have support for the TeraScale 2 series dGPUs found in the 15" and 17" models. Currently the best way to achieve graphics acceleration is to simply disable the dGPU and force the iGPU always.</p> <p>The best way to achieve this is to boot Recovery (or Single User Mode if the dGPU refuses to function at all) and run the following command:</p> <div class="language-sh extra-class"><pre class="language-sh"><code>nvram FA4CE28D-B62F-4C99-9CC3-6815686E30F9:gpu-power-prefs<span class="token operator">=</span>%01%00%00%00
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</code></pre></div><p>This will disable the dGPU and allow graphics acceleration in Big Sur. Note that external display outputs are directly routed to the dGPU and therefore can no longer be used. Solutions such as a <a href="https://www.displaylink.com/products/usb-adapters" target="_blank" rel="noopener noreferrer">DisplayLink Adapters<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><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> <span class="sr-only">(opens new window)</span></span></a> can work around this limitation.</p></div> <footer class="page-edit"><div class="edit-link"><a href="https://github.com/dortania/OpenCore-Legacy-Patcher/edit/main/docs/ACCEL.md" target="_blank" rel="noopener noreferrer">Help us improve this page!</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><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> <span class="sr-only">(opens new window)</span></span></div> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">6/2/2021, 2:41:56 AM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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