Public bug reported:
The buttons on my keyboard to change the screen brightness don't change the
brightness any more.
First, the little UI brightness bar appears, indicating the direction the
brightness should go, but the actual screen brightness does not change. Trying
to go increase the brightness freezes the entire system for a few seconds.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: xorg 1:7.7+23ubuntu3
ProcVersionSignature: Ubuntu 7.0.0-29.29~24.04.2-generic 7.0.12
Uname: Linux 7.0.0-29-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.capabilities.fabric-imex-mgmt:
DeviceFileMinor: 4323
DeviceFileMode: 256
DeviceFileModify: 1
.proc.driver.nvidia.capabilities.gpu0: Error: path was not a regular file.
.proc.driver.nvidia.capabilities.mig: Error: path was not a regular file.
.proc.driver.nvidia.gpus.0000.01.00.0: Error: path was not a regular file.
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.suspend: suspend hibernate resume
.proc.driver.nvidia.suspend_depth: default modeset uvm
.proc.driver.nvidia.version:
NVRM version: NVIDIA UNIX x86_64 Kernel Module 580.173.02 Tue Jun 23
08:38:17 UTC 2026
GCC version: gcc version 13.3.0 (Ubuntu 13.3.0-6ubuntu2~24.04.1)
ApportVersion: 2.28.3-0ubuntu0.1
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: pass
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Thu Aug 20 10:05:36 2026
DistUpgraded: Fresh install
DistroCodename: noble
DistroVariant: ubuntu
DkmsStatus:
nvidia/580.173.02, 7.0.0-28-generic, x86_64: installed
nvidia/580.173.02, 7.0.0-29-generic, x86_64: installed
GraphicsCard:
Intel Corporation HD Graphics 630 [8086:591b] (rev 04) (prog-if 00 [VGA
controller])
Subsystem: Acer Incorporated [ALI] HD Graphics 630 [1025:114e]
NVIDIA Corporation GP106M [GeForce GTX 1060 Mobile] [10de:1c20] (rev a1)
(prog-if 00 [VGA controller])
Subsystem: Acer Incorporated [ALI] GP106M [GeForce GTX 1060 Mobile]
[1025:114e]
InstallationDate: Installed on 2024-10-06 (683 days ago)
InstallationMedia: Ubuntu 24.04.1 LTS "Noble Numbat" - Release amd64
(20240827.1)
MachineType: Acer Aspire VN7-593G
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-29-generic
root=UUID=0bc504a4-a3a9-482a-bbdf-d529f787fe99 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/05/2017
dmi.bios.release: 1.6
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.06
dmi.board.name: Pluto_KLS
dmi.board.vendor: KBL
dmi.board.version: V1.06
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.06
dmi.ec.firmware.release: 1.3
dmi.modalias:
dmi:bvnInsydeCorp.:bvrV1.06:bd07/05/2017:br1.6:efr1.3:svnAcer:pnAspireVN7-593G:pvrV1.06:rvnKBL:rnPluto_KLS:rvrV1.06:cvnAcer:ct10:cvrV1.06:sku0000000000000000:pfaAspireV15Nitro:
dmi.product.family: Aspire V 15 Nitro
dmi.product.name: Aspire VN7-593G
dmi.product.sku: 0000000000000000
dmi.product.version: V1.06
dmi.sys.vendor: Acer
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.125-1ubuntu0.1~24.04.2
version.libgl1-mesa-dri: libgl1-mesa-dri 25.2.8-0ubuntu0.24.04.2
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.12-1ubuntu1.6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:22.0.0-1build1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20210115-1build1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:1.0.17-2ubuntu0.1
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble possible-manual-nvidia-install ubuntu
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https://bugs.launchpad.net/bugs/2164616
Title:
Screen brightness cannot be changed
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