Screen brightness changed after update to High Sierra on A1261

[Michael.S]

Hi,

I have recently acquired a
MacBook Pro (17-inch, Early 2008)
2,5 GHz Intel Core 2 Duo
4 GB 667 MHz DDR2 SDRAM
NVIDIA GeForce 8600M GT 512 MB

and have been running El Capitan but just switched to High Sierra using dosdude1's patcher.

I have the impression that the screen brightness has changed during the update.

When trying to adjust the brightness using the function keys I notice only a change in brightness until reaching the 3rd step on the brightness scale (from 0 - 16).
After that nothing happens in terms of brightness.

Is there a way to reset the brightness controller?

I have tried resetting the SMC and PRAM but none of them worked.

Or do I have to try it several times?

 

[Michael.S]

Ok, I have found the issue.
Just documenting this so others can benefit from my mistakes.

After upgrading to High Sierra I have failed to perform the post install steps from dosdude1's installation advise and so I didn't have any possibility to change the backlight neither of the screen or keyboard.

Just ran the post install steps and both work now like a charm.😍

So, problem solved.