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Yosemite on Latitude E5520 with Clover


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If your LCD is 1366x768, your Graphics key in config.plist should scecify that it is not a "dual link" :



Sound should work if the patched AppleHDA.kext is installed in /S/L/E.

Battery management should work too with the ACPIBatteryManager.kext from post #1 on S/L/E.


Copy the kexts to /System/Library/Extensions/ and hit the following commands :.

cd /System/Library/Extensions/

sudo chown -R 0:0 AppleHDA.kext ACPIBatteryManager.kext

sudo chmod -R 755 AppleHDA.kext ACPIBatteryManager.kext

sudo touch /System/Library/Extensions

sudo reboot


Sound and battery icons should appear in menubar ;-)

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unfortunately, now I have no E5520 for testing.


Perhaps you tried different EFI folders from different sources. Be careful to not have a config.plist under EFI/CLOVER/ if you use the OEM folder (EFI/CLOVER/OEM/Latitude E5520/).

It could be easier to copy config.plist and kext folder from EFI/CLOVER/OEM/Latitude E5520/ to EFI/CLOVER/

and rename OEM to OEM.OLD to be sure to use only /EFI/CLOVER/ .


All E5520 can boot with UEFI or legacy BIOS. It is a "bios" setup. For beginning, it is easier to use BIOS with the EFI folder on your system root.

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