Re: GNOME brightness controls have no effect on brightness
On Mon 04 Apr 2022 at 15:42:46 (-0400), Juan R.D. Silva wrote:
> On 2022-04-04 5:17 a.m., davidson wrote:
> > On Sun, 3 Apr 2022 Juan R.D. Silva wrote:
[ … ]
> > > Sorry for the rant but it looks that either GNOME folks decided they
> > > know it best what it should be for everyone or they are so busy with
> > > frequent "nice" GUI changes and re-designs that there is no time
> > > left for actual functionality. Fake controls and sliders doing
> > > nothing?.. This is really climax.
> >
> > I have no patience for figuring out where graphical desktops hide (or
> > document) their "user friendly" configuration tools, so I can
> > sympathise.
> >
> > Something like the above procedure (maybe with some extra exploration
> > of /sys/class) has always worked for me.
> >
> > Good luck. Hope this helps.
>
> Looks that I failed to deliver the point in my post.
>
> All 4 steps are correct. And I most certainly can happily change the
> value in the /sys/class/backlight/acpi_video0/brightness file to
> whatever I want. The problem is it does not have any effect on the
> actual/physical screen brightness.
>
> The change of the value in the
> /sys/class/backlight/acpi_video0/brightness only results in the slider
> in Brightness settings and other related GUI controls being carefully
> and precisely re-positioned to reflect the new value in
> /sys/class/backlight/acpi_video0/brightness.
>
> This is why there was a rant. Looks that like in GNOME moving the
> sliders around is the only goal. Well, that's been achieved. Greetings
> to the devs. :-) Sorry for another one. :-)
Having had two good rants at Gnome, surely you now have
to tell us whether moving the sliders changes the value
in /sys/class/backlight/acpi_video0/brightness, regardless
of any effect on the screen itself.
Cheers,
David.
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