Cannot get screen temperature adjusted using Q4OS on Raspberry Pi

That Random Guy · 2025-12-01 21:10

Hello,

I have been using the "experimental" image for Q4OS on my Raspberry Pi 5 Model B Rev 1.0 for a while now and for the life of me I cannot determine why something like Redshift doesn't work with my monitor.

I have tried other solutions that apparently do like redshift does such as brightnessctl and sct but none of these seem to work.

I even eventually figured out that I can actually just adjust the brightness from Q4OS using the TDE Monitor & Display settings. (see attached)

I tweaked around with those settings but even after changing my monitor and such, the screen never adjusts. It is the same brightness to me as when I first installed and I don't believe it ever worked.

I'm at a loss what to do now and so I was thinking I could get others to chime in or at least help me figure out why. Perhaps the Raspberry Pi image does not include something the regular images do? Maybe it's a driver? Or maybe a bug?

TIA

Info:

lsb_release

No LSB modules are available.
Distributor ID: Raspbian
Description: Raspbian GNU/Linux 12 (bookworm)
Release: 12
Codename: bookworm

uname

Linux 6.12.47+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.12.47-1+rpt1~bookworm (2025-09-16) aarch64 GNU/Linux

P.S. - I actually have another Windows PC that sometimes uses the same monitor but the Windows-native "nightlight" feature works there--so I know it's something I'm not doing right on Q4OS or something just isn't set right yet.

Last edited by That Random Guy (2025-12-01 21:14)

Attachments:

tde-screenshot1.png, Size: 39.26 KiB, Downloads: 66

q4osteam · 2025-12-01 21:19

We can recommend you to install "redshift-gtk" package, login to the session and see the applet icon in system tray. You may need to configure your geo location to make that work properly. Redshift-gtk is small, simple and works just fine in Trinity.

That Random Guy · 2025-12-02 01:16

@q4osteam

I remember trying that a while back but I just tried it again and no luck still.

Do you think it maybe has to do with driver? I am trying to use Redshift without geoclue as I don't want to use geoclue.

When I run redshift (not the gtk) from terminal, it runs without error and eventually just spits out the config settings I set in local config file as expected.

I don't think it's redshift in particular since none of the other solutions are doing anything either. I think it's something else related to either Trinity or the video driver or video server.

q4osteam · 2025-12-02 09:07

What is output of:
$ /usr/bin/redshift -v

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#1 2025-12-01 21:10