Do you mean you cannot adjust brightness with either hotkeys or GUI? intel_backlight is one of possible backlight interfaces. You can run "ls /sys/class/backlight" to find out what your system has.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1890873 Title: no intel_backlight file Status in linux package in Ubuntu: Confirmed Bug description: i am a noob, can't find the intel_backlight ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-42-generic 5.4.0-42.46 ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44 Uname: Linux 5.4.0-42-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: kira 1573 F.... pulseaudio /dev/snd/controlC1: kira 1573 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sat Aug 8 13:32:31 2020 InstallationDate: Installed on 2020-08-01 (6 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 04f2:b64f Chicony Electronics Co., Ltd HD User Facing Bus 001 Device 003: ID 8087:0029 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Acer Nitro AN515-54 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-42-generic root=UUID=53af6216-e431-4dba-8753-614cbe9fa7ca ro nomodeset_ quiet splash video.use_native_backlight=1 vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.4.0-42-generic N/A linux-backports-modules-5.4.0-42-generic N/A linux-firmware 1.187.2 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/11/2020 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V1.30 dmi.board.asset.tag: Type2 - Board Serial Number dmi.board.name: Octavia_CFS dmi.board.vendor: CFL dmi.board.version: V1.30 dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.30 dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.30:bd05/11/2020:svnAcer:pnNitroAN515-54:pvrV1.30:rvnCFL:rnOctavia_CFS:rvrV1.30:cvnAcer:ct10:cvrV1.30: dmi.product.family: Nitro 5 dmi.product.name: Nitro AN515-54 dmi.product.sku: 0000000000000000 dmi.product.version: V1.30 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1890873/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
