Public bug reported: The laptop LCD backlight brightness level is not preserved. The screen brightness always gets reset to 2-steps below the maximum level after login or resume from suspend. This is particularly annoying when working on battery, because after each resume, I have to make screen darker in order to preserve energy.
It is possible to control brightness by keyboard buttons and by status- bar slider, so brightness control mostly works. The status-bar slider behaves a bit erratically when moved, but not sure if it is related. The problem seems to be not related to kernel version. The problem existed in 18.04 as well as 18.10. Hardware: Dell Precision 5520. Graphics driver: Intel, using integrated GPU. Nvidia card turned off on boot, no proprietary Nvidia drivers loaded. ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: gnome-shell 3.30.1-2ubuntu1 ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12 Uname: Linux 4.18.0-10-generic x86_64 ApportVersion: 2.20.10-0ubuntu13 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Sun Oct 14 14:25:37 2018 DisplayManager: gdm3 DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-xenial-amd64-20160624-2 InstallationDate: Installed on 2017-04-12 (549 days ago) InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=pl_PL.UTF-8 SHELL=/bin/bash SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: gnome-shell (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug cosmic -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1797769 Title: LCD backlight brighness reset to maximum after boot / resume / login To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1797769/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
