On Sun, Feb 09, 2020 at 01:38:05AM +0100, volker wrote:
> Hi,
>
> I have an older HP Elitebook 840 G1. It is a system with FN key to change
> brightness: FN-F9 down, and FN-F10 up.
> btw: both keys don't work... (I was running an OpenSuSE 15 before, they
> worked to change brightness).
> So I installed OpenBSD ("current" for other reasons), and reduced the
> brightness at the restart of the machine, when it still displays the BIOS
> message or the OpenBSD boot prompt.
> The kernel would start normally, and display the blue messages. When the
> inteldrm driver loads, the screens gets shortly dark, and then comes back
> with the 4 blue lines of the inteldrm at the top, but now in full
> brightness.
> Everything else remains in full brightness, I start X automatically, and
> when logged in, I can't change the brightness anymore. Neither with the
> keys, nor with wsconsctl. It stays at 100%.
> I can use wsconsctl on the command line, it responds with a change, but
> actually brightness remains "full" (100%) - no changes:
>
> $ doas wsconsctl display.brightness=50
> display.brightness -> 50.00%
> $ doas wsconsctl display.brightness=10
> display.brightness -> 10.00%
>
> $ xbacklight
> 10.000000
> $ doas wsconsctl display.brightness=50
> display.brightness -> 50.00%
> $ xbacklight
> 50.000000
What happens when you set the brightness to 0? i.e.
$ doas wsconsctl display.brightness=0
