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screen is Very Very dark

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RehabMan

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RehabMan

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It is So difficult...
I Patched ACPIBackLight for DSDT but bright control is disabled
Here I'll raise the DSDT to fix the problem would be appreciated
https://www.dropbox.com/sh/g9pkzn7p9ut0d0j/AQ8T_ywMyR?n=62572418
This DSDT before the ACPI DSDT patch is applied

This is what I would try. Apply with MaciASL:

Code:
# brightness control for ACPIBrightness.kext

#   Brightness control fix
into device label PNLF remove_entry;
into scope label \_SB insert
begin
Device (PNLF)\n
{\n
    Name (_HID, EisaId ("APP0002"))\n
    Name (_CID, "backlight")\n
    Name (_UID, 0x0A)\n
    Name (_STA, 0x0B)\n
    Method (_BCL, 0, NotSerialized) { return (\_SB.PCI0.GFX0.DD02._BCL()) }\n
    Method (_BCM, 1, NotSerialized) { \_SB.PCI0.GFX0.DD02._BCM(Arg0) }\n
    Method (_BQC, 0, NotSerialized) { return (\_SB.PCI0.GFX0.DD02._BQC()) }\n
    Method (_DOS, 1, NotSerialized) { \_SB.PCI0.GFX0._DOS(Arg0) }\n
}\n
end;
 
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Patch tried that but the problem is still...
 

RehabMan

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Patch tried that but the problem is still...

Check your system.log for errors in console. Make sure the patch is present in the DSDT that you are loading. Check output of bdmesg to see if you are loading the DSDT as you expect.

Also, it is possible that the brightness methods in your DSDT don't work or need additional patching (if they access EC registers greater than 8-bit for example). Many DSDT have non-working brightness methods (under OS X). For example, the ProBook patches attempt to call back into Windows, which of course doesn't work.

You'll have to do some investigation to determine the cause.
 
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Only XHCI(USB3.0) kext Failed to load error...
 

RehabMan

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Only XHCI(USB3.0) kext Failed to load error...

No... I mean check for status of AHCIBacklight.kext. Did it load? Look in ioreg to see that it attached to the PNLF device, etc.
 
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sc.jpg
that is loaded...
 
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