Re: kern/57825 (Malfunctioning screen brightness keys and sysctl)

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

> On May 10, 2024, at 3:49 PM, maya%netbsd.org@localhost <maya%NetBSD.org@localhost> wrote:
> 
> Synopsis: Malfunctioning screen brightness keys and sysctl
> 
> State-Changed-From-To: open->feedback
> State-Changed-By: maya%NetBSD.org@localhost
> State-Changed-When: Fri, 10 May 2024 19:49:57 +0000
> State-Changed-Why:
> Does this worok for your system too?

It does make the screen brightness keys work. Thank you very much for that! It is not a complete fix though because plugging in and unplugging the AC power cord still makes the screen brightness go to 100%. After the power cord is plugged in or unplugged, sysctl hw.acpi.acpiout0.brightness still reflects the brightness level set by the screen brightness keys, however, and a subsequent press of the screen brightness keys successfully changes the screen brightness to be that indicated by the new sysctl value. That is, if I press the screen brightness keys to set the brightness (and the sysctl) to a level of 55, then if I unplug the AC power cord, the true brightness goes to 100 while the sysctl still reports 55, and then if I press the screen decrease brightness key once, the true brightness drops to a value of 50 and the sysctl also reports 50.

I tested it with an installation of the 202405110650Z daily of HEAD.