You see this on the attach screenshot and tell me the solution how I can fix this.
On Tue, 21 Jul 2026 at 12:25, Daniel van Vugt <[email protected]> wrote: > Try reading the max brightness value: > > cat /sys/class/backlight/intel_backlight/max_brightness > > and also writing brightness values (as root using sudo) to: > > /sys/class/backlight/intel_backlight/brightness > > ** Summary changed: > > - Screen brightness slider does not change laptop display brightness > + [Acer Aspire A715-76G] Screen brightness slider does not change laptop > display brightness > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/2161391 > > Title: > [Acer Aspire A715-76G] 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 14-41-48.png" https://bugs.launchpad.net/bugs/2161391/+attachment/5984954/+files/Screenshot%20From%202026-07-21%2014-41-48.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2161391 Title: [Acer Aspire A715-76G] Screen brightness slider does not change laptop display brightness To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/2161391/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
