Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.11 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11-rc5 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1680505 Title: display brightness Status in linux package in Ubuntu: Incomplete Bug description: display brightness reset after boot, reboot ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: linux-image-4.8.0-46-generic 4.8.0-46.49 ProcVersionSignature: Ubuntu 4.8.0-46.49-generic 4.8.17 Uname: Linux 4.8.0-46-generic x86_64 NonfreeKernelModules: wl AlsaVersion: Advanced Linux Sound Architecture Driver Version k4.8.0-46-generic. ApportVersion: 2.20.3-0ubuntu8.2 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: MID [HDA Intel MID], device 0: 92HD87B1/3 Analog [92HD87B1/3 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0p: lhv 1327 F...m pulseaudio /dev/snd/controlC0: lhv 1327 F.... pulseaudio Card0.Amixer.info: Card hw:0 'MID'/'HDA Intel MID at 0xfbf00000 irq 32' Mixer name : 'IDT 92HD87B1/3' Components : 'HDA:111d76d1,1028051c,00100205 HDA:80862804,80860101,00100000' Controls : 32 Simple ctrls : 13 CurrentDesktop: LXDE Date: Thu Apr 6 22:19:57 2017 HibernationDevice: RESUME=UUID=dbde9d43-fc13-4118-bae6-4388f9d5aa2a InstallationDate: Installed on 2017-04-06 (0 days ago) InstallationMedia: Lubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.1) Lsusb: Bus 002 Device 003: ID 093a:2521 Pixart Imaging, Inc. Optical Mouse Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. Vostro 1440 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-46-generic root=UUID=3b2f7494-a761-4a5e-8e6e-7288dccbc2b1 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.8.0-46-generic N/A linux-backports-modules-4.8.0-46-generic N/A linux-firmware 1.161.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/22/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: A01 dmi.board.name: 07J1JV dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A01 dmi.modalias: dmi:bvnDellInc.:bvrA01:bd08/22/2011:svnDellInc.:pnVostro1440:pvrA01:rvnDellInc.:rn07J1JV:rvrA01:cvnDellInc.:ct8:cvrA01: dmi.product.name: Vostro 1440 dmi.product.version: A01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1680505/+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
