As this issue can be fixed by updating the system, I will mark this bug as "Fix-released" If anyone still experiencing this, please feel free to open a new bug.
** Changed in: linux (Ubuntu) Status: Incomplete => Fix Released -- 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/1143778 Title: [Dell Latitude 6430u] Brightness keys do not work Status in “linux” package in Ubuntu: Fix Released Bug description: Running 12.04.2 on the system and the brightness keys do not work. The keys are a combination of Fn and Up or Down arrow. On attempting to use the keys, there is no effect on screen brightness, nor is there the brightness indicator. However, I am able to control brightness using the Brightness settings from "System Settings" ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.5.0-23-generic 3.5.0-23.35~precise1 ProcVersionSignature: Ubuntu 3.5.0-23.35~precise1-generic 3.5.7.2 Uname: Linux 3.5.0-23-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25. ApportVersion: 2.0.1-0ubuntu17.1 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: STAC92xx Analog [STAC92xx Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 1407 F.... pulseaudio CRDA: country TW: (2402 - 2472 @ 40), (3, 27) (5270 - 5330 @ 40), (3, 17), DFS (5735 - 5815 @ 40), (3, 30) Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xf7e30000 irq 48' Mixer name : 'Intel PantherPoint HDMI' Components : 'HDA:111d76df,10280584,00100203 HDA:80862806,80860101,00100000' Controls : 23 Simple ctrls : 10 Date: Mon Mar 4 02:25:42 2013 HibernationDevice: RESUME=UUID=c0470f10-8436-437b-8009-ba2be8ecb392 InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213) MachineType: Dell Inc. Latitude 6430U MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-23-generic root=UUID=4c3d4b80-eff7-43f9-bf80-3904f2788102 ro quiet splash initcall_debug vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.5.0-23-generic N/A linux-backports-modules-3.5.0-23-generic N/A linux-firmware 1.79.1 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/31/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: X28 dmi.board.name: 0V4GYG dmi.board.vendor: Dell Inc. dmi.board.version: X01 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrX28:bd08/31/2012:svnDellInc.:pnLatitude6430U:pvr01:rvnDellInc.:rn0V4GYG:rvrX01:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude 6430U dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1143778/+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