Native Brightness working without 'blinkscreen' using patched AppleBacklight.kext

[RehabMan]

since if changed to clover i can't use it anymore..
can i patch it on the fly like applehda and trim?

For the ProBook, ACPIBacklight.kext is the preferred solution.

The solution here can also be used with Clover (bootloader doesn't matter). There is no need to 'patch on the fly' because this solution uses an injector.

 

[Frank Jiang]

The slider does work in SysPrefs->Displays anytime. But the brightness key only work in first boot, it doesn't work after sleep/wake.

 

[RehabMan]

The slider does work in SysPrefs->Displays anytime. But the brightness key only work in first boot, it doesn't work after sleep/wake.

When you press your brightness keys, do you see the on screen "sun"?

 

[Frank Jiang]

I can see the "sun" first time. After sleep/wake, I can't see it.

 

[RehabMan]

I can see the "sun" first time. After sleep/wake, I can't see it.

That is weird. What laptop do you have? What ps2 drivers are you using?

 

[Frank Jiang]

My laptop is HP Pavilion dv4-5102tx.

Core i5-3210m/8GB Ram/HD 4000/GT 630m/750GB HDD

And I'm using VoodooPS2Controller.kext for PS2.

https://github.com/RehabMan/OS-X-Voodoo-PS2-Controller‎

 

[RehabMan]

My laptop is HP Pavilion dv4-5102tx.

Core i5-3210m/8GB Ram/HD 4000/GT 630m/750GB HDD

And I'm using VoodooPS2Controller.kext for PS2.

https://github.com/RehabMan/OS-X-Voodoo-PS2-Controller‎

You should run the debug version and see what output you get when those keys are pressed before/after sleep and compare.

Also, verify you have it installed correctly:

kextstat|grep -y ps2

 

[kyewei]

Hello

I have a acer haswell ultrabook with backlight working with your patched kext. However it does not cover all the brightness levels that I've seen (probably 0% to ~60% of possible brightness settings). Where would I edit (dsdt, kext, etc) to make the level range wider?

 

[RehabMan]

Hello

I have a acer haswell ultrabook with backlight working with your patched kext. However it does not cover all the brightness levels that I've seen (probably 0% to ~60% of possible brightness settings). Where would I edit (dsdt, kext, etc) to make the level range wider?

Haswell requires a slightly different DSDT patch and different data for AppleBacklightInjector.kext. The max value for Haswell is 0xad9 instead of 0x710.

I would recommend using ACPIBacklight.kext instead.

Haswell Brightness Fix:
DSDT Patches from here: https://github.com/RehabMan/Laptop-DSDT-Patch

Apply:
"Rename GFX0 to IGPU"
"Brightness Fix (Haswell)"
- rename patch must be done first and to all DSDT/SSDT that contain references to GFX0 that you're including in your final SSDT set
- Brightness patch must be done to the DSDT or SSDT that contains the definition for Device GFX0 (search for 'Device (GFX0)'
- Place DSDT and SSDT (if necessary) into a place where the bootloader will load them. For Clover, EFI/CLOVER/ACPI/patched (DSDT.aml, SSDT-x.aml where 'x' is a number). For Chameleon, /Extra/ssdt.aml, /Exra/ssdt-1.aml, /Extra/ssdt-2.aml, etc.

Install: https://github.com/RehabMan/OS-X-ACPI-Backlight

 

[kyewei]

Yea I've been playing around with editing the dsdt quite a bit to get my peripherals working, and ACPIBacklight was the one i stuck with in the end since the patched applebacklight wasn't bright enough. But is the 0x710 hard coded somewhere in a file though?