Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.18 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'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-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/v3.18-rc3-vivid/ ** 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/1388676 Title: Screen Brightness problem Status in “linux” package in Ubuntu: Incomplete Bug description: well..when I first installed my Ubuntu 14.04, my brightness button was working just fine, but now, when I try to do it, it gets kind of laggy and doesn't adjust the screen, only the brightness of the own bar changes a little. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-39-generic 3.13.0-39.66 ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8 Uname: Linux 3.13.0-39-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: gabriel 1943 F.... pulseaudio /dev/snd/controlC0: gabriel 1943 F.... pulseaudio CurrentDesktop: Unity Date: Sun Nov 2 20:40:57 2014 HibernationDevice: RESUME=UUID=de2ff4cd-739d-4f17-a680-84402466ec9f InstallationDate: Installed on 2014-11-01 (1 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: LENOVO 20377 ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-39-generic.efi.signed root=UUID=1c13abd2-044c-411b-afeb-e00263afe26a ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-39-generic N/A linux-backports-modules-3.13.0-39-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/14/2014 dmi.bios.vendor: LENOVO dmi.bios.version: 9FCN21WW dmi.board.asset.tag: No Asset Tag dmi.board.name: Lenovo Flex 2-15D dmi.board.vendor: LENOVO dmi.board.version: 31900058 Std dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Flex 2-15D dmi.modalias: dmi:bvnLENOVO:bvr9FCN21WW:bd05/14/2014:svnLENOVO:pn20377:pvrLenovoFlex2-15D:rvnLENOVO:rnLenovoFlex2-15D:rvr31900058Std:cvnLENOVO:ct10:cvrLenovoFlex2-15D: dmi.product.name: 20377 dmi.product.version: Lenovo Flex 2-15D dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1388676/+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
