Re: Brightness slider gone - Gnome 48

>On 9/18/25 12:59, Richard Henschel ([email protected] via blfs-support
Mailing List) wrote:

>On 9/18/25 12:04, "Cliff mcDiarmid" ([email protected] via blfs-
support Mailing List) wrote:

>This is one for the Gnome users.   The brightness slider, at the to right in
>Gnome 48, seems to have vanished, or at least it  has for me. I do have a
>AMD Ryzen™ 7 4800H with Radeon™ Graphics × 12.   This is probably the problem
>and I need some pointers as to what i need to install or not.
>This might require additional modules I don't know.   I have done extensive
>googling and can't find any definitive.

>Peculiar.  I also just noticed that I do not have the brightness slider on
BLFS Gnome either.  The two machines I have BLFS on (one is >Intel i7 and only
has NVidia 2070 card for graphics, the other AMD Ryzen 5 laptop with
integrated Radeon Rembrandt and discrete >NVidia 2050 card) both show no
brightness slider. Ubuntu on the Intel machine also has no brightness slider,
while the Ubuntu AMD >machine does.  Perhaps a configurable item?   I am also
curious to know.

>I found out that the brightness slider is supposed to show up on laptops
(with a battery and power management exists) by default. I >installed v102 of
dash-to-dock extension on my laptop and the brightness control seemed to
magically appear.  Don't know why, but I >am certain it wasn't there before.
There also appears to be a gnome extension at
https://extensions.gnome.org/extension/4652
>adjust->display-brightness/ but I have not tried it.  I have also found
information that implies it will not show up on machines where >the kernel
>has no way to control your monitor brightness.   That is two possible reasons
why it doesn't show up on my Intel machine.

Yes mine is a laptop, never had issues in the past, but this one has the AMD
cpu.   Been through the kernel many times.  Even compared to Ubuntu setup
can't find the answer.   I've had dash to dock from the end of the BLFS
install.  No joy there.   Even installed ddcutils then found it was useless in
this instance.

Thanks

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