[HP EliteBook 8560w] Can't change screen brightness

[yassyn bennani]

hi , i can't change my brightness it s blocked on max even if i us fn+f9 it show the bar of brightness changing but not the brightness in my screen

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: xorg 1:7.7+23ubuntu2
ProcVersionSignature: Ubuntu 6.5.0-14.14~22.04.1-generic 6.5.3
Uname: Linux 6.5.0-14-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: pass
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Mon Jan 22 19:36:53 2024
DistUpgraded: Fresh install
DistroCodename: jammy
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 NVIDIA Corporation GF106GLM [Quadro 2000M] [10de:0dda] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company GF106GLM [Quadro 2000M] [103c:1631]
InstallationDate: Installed on 2024-01-16 (6 days ago)
InstallationMedia: Ubuntu 22.04.3 LTS "Jammy Jellyfish" - Release amd64 (20230807.2)
MachineType: Hewlett-Packard HP EliteBook 8560w
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.5.0-14-generic root=UUID=a21fb944-4d22-4f82-b6f9-85577ca2ec3d ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/05/2012
dmi.bios.release: 15.34
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68SVD Ver. F.22
dmi.board.name: 1631
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 01.39
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.ec.firmware.release: 1.57
dmi.modalias: dmi:bvnHewlett-Packard:bvr68SVDVer.F.22:bd01/05/2012:br15.34:efr1.57:svnHewlett-Packard:pnHPEliteBook8560w:pvrA0001D02:rvnHewlett-Packard:rn1631:rvrKBCVersion01.39:cvnHewlett-Packard:ct10:cvr:skuWX563AV:
dmi.product.family: 103C_5336AN
dmi.product.name: HP EliteBook 8560w
dmi.product.sku: WX563AV
dmi.product.version: A0001D02
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.113-2~ubuntu0.22.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 23.0.4-0ubuntu1~22.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.4-2ubuntu1.7~22.04.7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2ubuntu1
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