New Brightness kext, IntelBacklight.kext

[RehabMan]

It works great! Thank you.
By the way, can you add a new feature that the brightness can fade in or fade out when the screen is tuning on or off just like a real mac does?

Fading in/out is implemented in the kext, but something is preventing it from working in the specific case you mention. The cause is not known, much as we don't know the cause of smooth transitions not working when using the native AppleBacklight.kext.

 

[kewlbass]

I’ve been pouring over guides and ripping my hair out on this one for three days now, so I guess it’s time to ask…

I’ve tried every approach that I could find, and I can’t get my Lenovo Z580 to boot at full brightness. The clover screen is bright. The Apple and progress bar start out bright. Then they dim to about 50%.

I am able to get a semi-functioning slider control using either the basic PNLF patch or the ACPI patch in conjunction with ACPIBacklight.kext. The slider will range from about 10% to 50% brightness. Interestingly, if I use IntelBacklight.kext, the slider control is present, but completely non-functional.

To muddy the waters a bit more… I flashed my bios to get rid of the whitelist so I could install a compatible wifi card. Prior to that, I didn’t have this problem.

The silver lining here is that the function keys always work. I am able to achieve full brightness by hitting the Fn-Up keys 20 plus times. I’d really like to not have to do that every time I boot.

Any ideas are greatly appreciated.

 

[RehabMan]

I’ve been pouring over guides and ripping my hair out on this one for three days now, so I guess it’s time to ask…

I’ve tried every approach that I could find, and I can’t get my Lenovo Z580 to boot at full brightness. The clover screen is bright. The Apple and progress bar start out bright. Then they dim to about 50%.

I am able to get a semi-functioning slider control using either the basic PNLF patch or the ACPI patch in conjunction with ACPIBacklight.kext. The slider will range from about 10% to 50% brightness. Interestingly, if I use IntelBacklight.kext, the slider control is present, but completely non-functional.

To muddy the waters a bit more… I flashed my bios to get rid of the whitelist so I could install a compatible wifi card. Prior to that, I didn’t have this problem.

The silver lining here is that the function keys always work. I am able to achieve full brightness by hitting the Fn-Up keys 20 plus times. I’d really like to not have to do that every time I boot.

Any ideas are greatly appreciated.

Read guide: http://www.tonymacx86.com/el-capita...ching-dsdt-ssdt-laptop-backlight-control.html

 

[feetsonfire]

Hey rehab man... i am facing a weird issue. I got HD4000 and after installing things were great. but after connecting HDMI and shutting down/ sleep with connected HDMI. On next boot inbuilt display shows black screen. its like when kext starts on boot. it lowers the screen brightness and then its dark black. I tried all the ig-platform-ids but nothing worked.

HDMI works but inbuilt with black screen. I had to uninstall IntelBacklight.Kext to make inbuilt screen work.

Any idea whats wrong.

 

[RehabMan]

Hey rehab man... i am facing a weird issue. I got HD4000 and after installing things were great. but after connecting HDMI and shutting down/ sleep with connected HDMI. On next boot inbuilt display shows black screen. its like when kext starts on boot. it lowers the screen brightness and then its dark black. I tried all the ig-platform-ids but nothing worked.

HDMI works but inbuilt with black screen. I had to uninstall IntelBacklight.Kext to make inbuilt screen work.

Any idea whats wrong.

Press your brightness up key.

If you haven't yet enabled your brightness keys: http://www.tonymacx86.com/el-capita...ching-dsdt-ssdt-laptop-backlight-control.html

 

[feetsonfire]

Press your brightness up key.

If you haven't yet enabled your brightness keys: http://www.tonymacx86.com/el-capita...ching-dsdt-ssdt-laptop-backlight-control.html

Feels stupid its was so simple. So my Vaio SVF15 100% working with 10.11.4. this was the last issue. thanks dude

 

[themacmeister]

Hi RehabMan,

You have helped me so much in the past, wondering if you can help me solve just one issue on my Haswell HP Pavilion 15-p011tx.

I am unsure which it uses, but I am only on Yosemite 10.10.5 (everything working except backlight/lid). I believe once backlight is working, lid sleep/wake should start working too.

I installed Haswell PNLF DSDT patch, and ACPIBacklight.kext, but no slider or brightness keys

I assume IntelBacklight will not work with Yosemite (I tried it anyway, with no success).

I'm prepared to give you all the files/logs/DSDT info you need to help me fix this...

Many thanks yet again...

 

[themacmeister]

PS. I have the login-screen corruption, but choosing the Clover patch fix for that kills accelerated graphics

I never use the login screen at all, so it is a very small inconvenience for a second or two on startup, no big deal.

 

[RehabMan]

Hi RehabMan,

You have helped me so much in the past, wondering if you can help me solve just one issue on my Haswell HP Pavilion 15-p011tx.

I am unsure which it uses, but I am only on Yosemite 10.10.5 (everything working except backlight/lid). I believe once backlight is working, lid sleep/wake should start working too.

I installed Haswell PNLF DSDT patch, and ACPIBacklight.kext, but no slider or brightness keys

I assume IntelBacklight will not work with Yosemite (I tried it anyway, with no success).

I'm prepared to give you all the files/logs/DSDT info you need to help me fix this...

Many thanks yet again...

http://www.tonymacx86.com/el-capita...ching-dsdt-ssdt-laptop-backlight-control.html

 

[Percy01]

Total noob question - please help

Hello! Please have patience and bear with me - I have a specific question:

In search for a method to adust the PWM frequency of laptop displays, I stumbled accross this code and it sounds like it modifies the backlights programme run by Intel Graphics cards, which, I have read, also influence PWM (since the intergrated Intel cards runs when on battery mode). Since I completely lack any related knowledge, I would like to ask you the following:

Can one increase PWM freqeuncy with this code?
Does it work on a new Windows 10 64-bit machine with Intel HD 530 dedicated graphics (and dedicated NVidia), too? If I am completely wrong here, I am sorry - my relevant technical knowledge is not good enough to notice.
The readme didn't help me much, either....

Thank you for reading and thank you even more for any answers!