Hi Daniel,
Here are the requested details for the bug report:
Laptop Model: Aspire A715-76G
Backlight Output: intel_backlight

I also attach a screenshot so you can see all the things more clearly.
Thanks!

On Tue, 21 Jul 2026 at 11:05, Daniel van Vugt <[email protected]>
wrote:

> Please tell us the model of laptop, and also look in
> /sys/class/backlight/ to see if there is any kernel support for the
> backlight available.
>
> ** Package changed: xorg (Ubuntu) => ubuntu
>
> ** Changed in: ubuntu
>        Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/2161391
>
> Title:
>   Screen brightness slider does not change laptop display brightness
>
> Status in Ubuntu:
>   Incomplete
>
> Bug description:
>   Moving the brightness slider or using keyboard shortcuts has no effect
>   on the display.
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 26.04
>   Package: xorg (not installed)
>   ProcVersionSignature: Ubuntu 7.0.0-28.28-generic 7.0.12
>   Uname: Linux 7.0.0-28-generic x86_64
>   ApportVersion: 2.34.0-0ubuntu2
>   Architecture: amd64
>   CasperMD5CheckResult: pass
>   CurrentDesktop: ubuntu:GNOME
>   Date: Tue Jul 21 10:41:09 2026
>   InstallationDate: Installed on 2026-07-20 (0 days ago)
>   InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64
> (20260423.1)
>   ProcEnviron:
>    LANG=en_US.UTF-8
>    PATH=(custom, no user)
>    SHELL=/bin/bash
>    TERM=xterm-256color
>    XDG_RUNTIME_DIR=<set>
>   SourcePackage: xorg
>   Symptom: display
>   UpgradeStatus: No upgrade log present (probably fresh install)
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+bug/2161391/+subscriptions
>
>


** Attachment added: "Screenshot From 2026-07-21 11-25-39.png"
   
https://bugs.launchpad.net/bugs/2161391/+attachment/5984896/+files/Screenshot%20From%202026-07-21%2011-25-39.png

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You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/2161391

Title:
  Screen brightness slider does not change laptop display brightness

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