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E7450 High Sierra: usb port not working, screen luminosity issue


paulcrr

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it could be nvram related. you can try adding this http://www.insanelymac.com/forum/index.php?app=core&module=attach&section=attach&attach_id=283325to clover drivers folder. if you have another aptio driver installed remove it and emuvariable and disable clover rc scripts also delete your nvram.plst if you have one. the only driver needed is AptioMemoryFix.efi the other is for filevault keyboard.

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you would have to reinstall clover then configure it and deselect the options that are no longer needed like rc scripts and such. also deselect any aptio drivers you might have installed with clover as it will re add them and cause issues.

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I had exactly the same problem with the backlight of the screen on my E7450.
I will explain my solution to the problem:
- Removed AppleBacklightinjector from LE.
- Placed IntelBacklight.Kext in the EFI folder (you lose brightness function buttons)
- Installed "Brightness by Bergdessing" to have a Brightness slider in the menu bar
- Rebuild cache and repair permissions

 

Hope that helps.

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