after the last update the brightness controls started working again.
##################### Start-Date: 2020-04-02 10:24:52 Commandline: aptdaemon role='role-commit-packages' sender=':1.117' Upgrade: libegl-mesa0:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libglapi-mesa:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libglapi-mesa:i386 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libxatracker2:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libegl1-mesa:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libgbm1:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libwayland-egl1-mesa:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libgl1-mesa-dri:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libgl1-mesa-dri:i386 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libgl1-mesa-glx:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libgl1-mesa-glx:i386 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), mesa-vdpau-drivers:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), mesa-va-drivers:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libglx-mesa0:amd64 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3), libglx-mesa0:i386 (19.2.8-0ubuntu0~18.04.2, 19.2.8-0ubuntu0~18.04.3) End-Date: 2020-04-02 10:24:55 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-435 in Ubuntu. https://bugs.launchpad.net/bugs/1861532 Title: brightness control not working [Lenovo Legion Y540] Status in nvidia-graphics-drivers-435 package in Ubuntu: New Bug description: after selecting nvidia-driver-435 in livepatch- additional drivers the brightness control stops working after the first reboot. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xorg 1:7.7+19ubuntu7.1 ProcVersionSignature: Ubuntu 5.3.0-28.30~18.04.1-generic 5.3.13 Uname: Linux 5.3.0-28-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 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1) ApportVersion: 2.20.9-0ubuntu7.7 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Fri Jan 31 22:00:02 2020 DistUpgraded: Fresh install DistroCodename: bionic DistroVariant: ubuntu DkmsStatus: nvidia, 435.21, 4.15.0-76-generic, x86_64: installed nvidia, 435.21, 5.3.0-28-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: NVIDIA Corporation Device [10de:2191] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:3ffc] InstallationDate: Installed on 2020-01-31 (0 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) MachineType: LENOVO 81Q4 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-28-generic root=UUID=084301b5-fdae-4c92-811e-0536a3b7555b ro quiet splash vt.handoff=1 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/23/2019 dmi.bios.vendor: LENOVO dmi.bios.version: BHCN35WW dmi.board.asset.tag: NO Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Legion Y540-17IRH dmi.modalias: dmi:bvnLENOVO:bvrBHCN35WW:bd11/23/2019:svnLENOVO:pn81Q4:pvrLegionY540-17IRH:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrLegionY540-17IRH: dmi.product.family: Legion Y540-17IRH dmi.product.name: 81Q4 dmi.product.sku: LENOVO_MT_81Q4_BU_idea_FM_Legion Y540-17IRH dmi.product.version: Legion Y540-17IRH dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.99-1ubuntu1~18.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 19.2.8-0ubuntu0~18.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx 19.0.2-1ubuntu1.1~18.04.2 version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-435/+bug/1861532/+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
