Ah that's easy then. There is no backlight and we don't support it yet. This problem with OLED is being tracked in https://trello.com/c/JVHWYLLa/68-2004-support-adjusting-brightness-on- oled-panel
-- 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/1851833 Title: [Sager Clevo notebook model PB50_70RF,RD,RC] Unable to adjust brightness of backlight Status in linux package in Ubuntu: Confirmed Bug description: I am unable to adjust the brightness of the backlight of my laptop screen either by using the slider of by changing the value in /sys/class/backlight/intel_backlight/brightness directly. I have tried changing my GRUB configuration: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor" But that did not help. I am using Ubuntu 19.10 ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: xorg 1:7.7+19ubuntu12 ProcVersionSignature: Ubuntu 5.3.0-19.20-generic 5.3.1 Uname: Linux 5.3.0-19-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia .proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0000:01:00.0' .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 435.21 Sun Aug 25 08:17:57 CDT 2019 GCC version: gcc version 9.2.1 20191008 (Ubuntu 9.2.1-9ubuntu2) ApportVersion: 2.20.11-0ubuntu8.2 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Fri Nov 8 14:03:33 2019 DistUpgraded: 2019-10-09 11:42:34,460 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py' DistroCodename: eoan DistroVariant: ubuntu DkmsStatus: nvidia, 435.21, 5.3.0-19-generic, x86_64: installed virtualbox, 6.0.14, 5.3.0-18-generic, x86_64: installed virtualbox, 6.0.14, 5.3.0-19-generic, x86_64: installed ExtraDebuggingInterest: Yes, including running git bisection searches GraphicsCard: Intel Corporation UHD Graphics 630 (Mobile) [8086:3e9b] (prog-if 00 [VGA controller]) Subsystem: CLEVO/KAPOK Computer UHD Graphics 630 (Mobile) [1558:65d1] NVIDIA Corporation TU106M [GeForce RTX 2070 Mobile] [10de:1f10] (rev a1) (prog-if 00 [VGA controller]) Subsystem: CLEVO/KAPOK Computer TU106M [GeForce RTX 2070 Mobile] [1558:65d1] InstallationDate: Installed on 2019-10-09 (30 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) MachineType: Notebook PB50_70RF,RD,RC ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.3.0-19-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to eoan on 2019-10-09 (30 days ago) dmi.bios.date: 02/01/2019 dmi.bios.vendor: INSYDE Corp. dmi.bios.version: 1.07.07 dmi.board.asset.tag: Tag 12345 dmi.board.name: PB50_70RF,RD,RC dmi.board.vendor: Notebook dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Notebook dmi.chassis.version: N/A dmi.modalias: dmi:bvnINSYDECorp.:bvr1.07.07:bd02/01/2019:svnNotebook:pnPB50_70RF,RD,RC:pvrNotApplicable:rvnNotebook:rnPB50_70RF,RD,RC:rvrNotApplicable:cvnNotebook:ct10:cvrN/A: dmi.product.family: Not Applicable dmi.product.name: PB50_70RF,RD,RC dmi.product.sku: Not Applicable dmi.product.version: Not Applicable dmi.sys.vendor: Notebook version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.99-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 19.2.1-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 19.2.1-1ubuntu1 version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.5+git20191008-0ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.0.1-1ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20190815-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1851833/+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
