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

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

The following reply was made to PR kern/57825; it has been noted by GNATS.

From: Rob Whitlock <rwhitlock22%gmail.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost,
 netbsd-bugs%netbsd.org@localhost,
 gnats-admin%netbsd.org@localhost,
 "maya%netbsd.org@localhost" <maya%NetBSD.org@localhost>
Subject: Re: kern/57825 (Malfunctioning screen brightness keys and sysctl)
Date: Sat, 11 May 2024 22:25:58 -0400

 > On May 10, 2024, at 3:49 PM, maya%netbsd.org@localhost <maya%NetBSD.org@localhost> wrote:
 >=20
 > Synopsis: Malfunctioning screen brightness keys and sysctl
 >=20
 > 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.=