Lenovo T430u Big Sur - Dim at max brightness

[pdubya]

I have the graphics acceleration working (HD4000), as well as the brightness keys and slider in settings.  However, max brightness is not very bright.

Patched with SSDT-PNLF IVY.aml and added these to device properties but no change:

@0,backlight-control | Data | 01000000

applbkl | Data | 01000000

AAPL,backlight-control | Data | 01000000

AAPL00,backlight-control | Data | 01000000

[MaLd0n]

things is changed

use it instead

Quote

Device (PNLF)
        {
            Name (_HID, EisaId ("APP0002"))  // _HID: Hardware ID
            Name (_CID, "backlight")  // _CID: Compatible ID
            Name (_UID, 0x10)  // _UID: Unique ID
            Name (_STA, 0x0B)  // _STA: Status
        }

 

[pdubya]

20 hours ago, MaLd0n said:

things is changed

use it instead

 

Thanks, that's already in the patched DSDT you gave me though.

[pdubya]

1 hour ago, pdubya said:

Thanks, that's already in the patched DSDT you gave me though.

Worth noting that sleep then wake activates the backlight.

[pdubya]

Finally got it working with this patch https://github.com/dortania/Getting-Started-With-ACPI/blob/master/extra-files/compiled/SSDT-PNLF.aml

[kaduc4]

Dude, I never managed to install any version of Mac OS in my T430u. 
Would you share your EFI, please?! 🙏