Public bug reported:
After installation, the notebook brighness buttons change brightness
settings, but settings are not applied on the screen.
Failed to start Load/Save Screen Backlight Brightness of backlight:amdgpu_bl0.
amdgpu_bl0: Failed to write system 'brightness' attribute: No such device or
address
amdgpu_bl0: Failed to write system 'brightness' attribute: No such device or
address
Failed to get backlight or LED device 'backlight:acpi_video0': No such device
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34
Uname: Linux 5.4.0-33-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.2
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: X-Cinnamon
Date: Sun May 31 09:04:49 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed
maybe-ubiquity quiet splash ---
InstallationDate: Installed on 2020-05-29 (1 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/bin/bash
SourcePackage: ubiquity
Symptom: installation
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal ubiquity-20.04.15
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1881461
Title:
Brightness settings don't work on Lenovo Ideapad 5 15ARE05
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+bug/1881461/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
