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Dell Inspiron 3520 help (El Capitan)

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try resetting it

sudo nvram -c

 

Also in /EFI/Clover/drivers64UEFI, you have OsxAptioFix2Drv-64.efi and OsxAptioFixDrv-64.efi.

Remove OsxAptioFix2Drv-64.efi and test again.

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You are da man! 😀

 

The brightness slider is holding its settings now, and with all of this testing I have probably rebooted this thing 40 times, and no issues with brightness at startup as with first patched dsdt you did.

 

Okay, one last thing with this backlight issue if you can, and you are willing. Once upon a time the dsdt was patched with working function key control for backlight. Now, if I press Fn -F4, (brightness down), nothing happens. If I press Fn- F5, (brightness up), brightness will go all the way up, even if I let go of the key, once its pressed for just a moment, brightness goes all the way up.

Function keys working for brightness are not a necessity, but they are nice to have.

No clue where to start with this. I see guides, and they give me a headache. DSDT patching is not my thing, although I did manage to patch it for my WiFi. lol

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