Display dimming despite setting being turned off

[Jacob Starr]

The display is dimming after a few seconds of "inactivity" despite turning off the setting to dim the display. This seems to occur on any power setting and a reboot did not solve the problem. This makes activities such as reading difficult as the display becomes harder to read and I have to interact with the computer more than necessary to keep the screen bright.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: xorg 1:7.7+23ubuntu2
ProcVersionSignature: Ubuntu 5.14.0-1033.36-oem 5.14.21
Uname: Linux 5.14.0-1033-oem x86_64
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: unknown
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Thu Apr 21 09:56:56 2022
DistUpgraded: 2022-04-21 09:33:57,457 DEBUG failed to SystemLock() (E:Could not get lock /var/lib/dpkg/lock. It is held by process 55177 (dpkg), W:Be aware that removing the lock file is not a solution and may break your system., E:Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?)
DistroCodename: jammy
DistroVariant: ubuntu
ExtraDebuggingInterest: No
GraphicsCard:
 Intel Corporation Device [8086:9a78] (rev 01) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:0a7d]
InstallationDate: Installed on 2022-03-29 (23 days ago)
InstallationMedia: Ubuntu 20.04.4 LTS "Focal Fossa" - Release amd64 (20220223)
MachineType: Dell Inc. Inspiron 14 5410
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.14.0-1033-oem root=UUID=65a9ddc2-0f7d-4b2c-8228-d1f755668bf9 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to jammy on 2022-04-21 (0 days ago)
dmi.bios.date: 02/15/2022
dmi.bios.release: 2.7
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 2.7.1
dmi.board.name: 0XPW9D
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr2.7.1:bd02/15/2022:br2.7:svnDellInc.:pnInspiron145410:pvr:rvnDellInc.:rn0XPW9D:rvrA00:cvnDellInc.:ct10:cvr:sku0A7D:
dmi.product.family: Inspiron
dmi.product.name: Inspiron 14 5410
dmi.product.sku: 0A7D
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.110-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 22.0.1-1ubuntu2
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.3-2ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2build3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1

[Daniel van Vugt (vanvugt)]

On some laptops there are two settings that dim the display so you need to disable both. Please try:

  Settings > Power > Automatic Screen Brightness = OFF
  Settings > Power > Dim Screen = OFF

[Jacob Starr (ryukashin)]

I don't have the second setting, but the problem has seemed to resolve itself overnight.

[Launchpad Janitor (janitor)]

[Expired for gnome-control-center (Ubuntu) because there has been no activity for 60 days.]