** Tags removed: cosmic
** Tags added: oracular
** Tags added: backlight
** Also affects: upower (Ubuntu)
Importance: Undecided
Status: New
** Changed in: upower (Ubuntu)
Status: New => Confirmed
** Also affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to upower in Ubuntu.
https://bugs.launchpad.net/bugs/1797769
Title:
LCD backlight brighness reset to maximum after boot / resume / login
Status in gnome-settings-daemon package in Ubuntu:
Confirmed
Status in gnome-shell package in Ubuntu:
New
Status in upower package in Ubuntu:
Confirmed
Bug description:
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)
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https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1797769/+subscriptions
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