Re: power plug screen brightness control (was: emacs icomplete-vertical for manpages chdir(2) fails)

[Rob Whitlock <rwhitlock22%gmail.com@localhost>]

> On Jan 8, 2025, at 1:04 AM, Michael van Elst <mlelstv%serpens.de@localhost> wrote:
> 
> rwhitlock22%gmail.com@localhost (Rob Whitlock) writes:
> 
>> https://gnats.netbsd.org/58257
> 
>> Out of curiosity, and for looking for commonalities, what system do you
>> have this power plug/screen brightness problem on?
> 
> 
> This is a BIOS power management feature, the running OS implements it
> with some ACPI callback. I would guess it goes away when you change
> a BIOS setting from something like 'Battery Optimized' to 'Max Performance'.
> 
> I don't think the BIOS has an individual setting just for the display.

Thanks for the tip. Unfortunately, enabling all the "max performance" settings
I could find had no effect on the power plug changing the brightness.