$ cat /sys/class/backlight/intel_backlight/brightness 451 $ grep . /var/lib/systemd/backlight/* 75
-- 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/1686268 Title: Backlight brightness level not restored after reboot Status in linux package in Ubuntu: Incomplete Bug description: I am not sure if this is the right place to report this, so feel free to move it elsewhere. It looks like the systemd-backlight service (/lib/systemd/system /systemd-backlight@.service) does not restore the brightness level (although it saves it before shut-down). However the following command does restore the saved brightness: sudo /lib/systemd/systemd-backlight load backlight:intel_backlight As a temporary solution to automate it at boot I am using the following line added to the root cron: @reboot /lib/systemd/systemd-backlight load backlight:intel_backlight - Ubuntu 4.10.0-20.22-generic 4.10.8 - Gnome 3.24 Please, let me know if you need more info. Thanks. --- ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: dd 1540 F.... pulseaudio CurrentDesktop: GNOME DistroRelease: Ubuntu 17.04 InstallationDate: Installed on 2017-04-12 (13 days ago) InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170411) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 8087:0a2b Intel Corp. Bus 001 Device 003: ID 1bcf:2b95 Sunplus Innovation Technology Inc. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. Precision 5520 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-20-generic.efi.signed root=/dev/mapper/nvme-ubuntu_gnome ro systemd.restore_state=1 quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8 RelatedPackageVersions: linux-restricted-modules-4.10.0-20-generic N/A linux-backports-modules-4.10.0-20-generic N/A linux-firmware 1.164 Tags: zesty Uname: Linux 4.10.0-20-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip input lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 03/29/2017 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.2.4 dmi.board.name: 06X96V dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.2.4:bd03/29/2017:svnDellInc.:pnPrecision5520:pvr:rvnDellInc.:rn06X96V:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.name: Precision 5520 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1686268/+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
