I burned a disk with the daily live of 2013-12-03 and the bug persists exactly the same. Fn keys change the value of /sys/class/backlight/acpi_video0/brightness. This doesn't change actual screen brightness, that can be changed altering the value of /sys/class/backlight/intel_backlight/brightness.
I will check the latest upstream kernel soon. -- 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/1218547 Title: 8086:0416 [Clevo W350ST] brightness keys don't work on Kubuntu Status in The Linux Kernel: Unknown Status in “linux” package in Ubuntu: Incomplete Bug description: The Fn+F8 and Fn+F9 keys are not working on my Clevo W350ST with Kubuntu Raring to change screen brightness of the internal laptop screen. I installed linux-headers-3.11.0-4, linux- headers-3.11.0-4-generic, linux-image-3.11.0-4-generic and linux- image-extra-3.11.0-4-generic from Saucy packages repository but the problem persists. When trying the following event codes appear correctly: xev | sed -n 's/^.*state \([0-9].*\), keycode *\([0-9]\+\) *\(.*\), .*$/keycode \2 = \3, state = \1/p' keycode 36 = (keysym 0xff0d, Return), state = 0x10 keycode 232 = (keysym 0x1008ff03, XF86MonBrightnessDown), state = 0x10 keycode 233 = (keysym 0x1008ff02, XF86MonBrightnessUp), state = 0x10 And changing: /sys/class/backlight/intel_backlight/brightness changes the brightness of the screen, but pressing the key combination does not. I believe this happens because the key combination is, in fact, changing the value of: /sys/class/backlight/acpi_video0/brightness I have in my package sources: http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu http://ppa.launchpad.net/bumblebee/stable/ubuntu WORKAROUND: acpi_backlight=vendor --- ApportVersion: 2.9.2-0ubuntu8.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: silvio 2689 F.... pulseaudio /dev/snd/pcmC1D0p: silvio 2689 F...m pulseaudio /dev/snd/controlC0: silvio 2689 F.... pulseaudio DistroRelease: Ubuntu 13.04 HibernationDevice: RESUME=UUID=58f7acf2-4914-4b11-a2ac-e641cb4b39fd InstallationDate: Installed on 2013-08-18 (57 days ago) InstallationMedia: Kubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: Notebook W350STQ/W370ST MarkForUpload: True Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-9-generic root=UUID=f0bca002-701a-49bb-befc-7343bac2e245 ro locale=pt_BR quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.11.0-9.16-generic 3.11.2 RelatedPackageVersions: linux-restricted-modules-3.11.0-9-generic N/A linux-backports-modules-3.11.0-9-generic N/A linux-firmware 1.106 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no Tags: raring Uname: Linux 3.11.0-9-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lp lpadmin plugdev sambashare sudo vboxusers dmi.bios.date: 04/11/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 4.6.5 dmi.board.asset.tag: Tag 12345 dmi.board.name: W350STQ/W370ST dmi.board.vendor: Notebook dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: Notebook dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd04/11/2013:svnNotebook:pnW350STQ/W370ST:pvrNotApplicable:rvnNotebook:rnW350STQ/W370ST:rvrNotApplicable:cvnNotebook:ct9:cvrN/A: dmi.product.name: W350STQ/W370ST dmi.product.version: Not Applicable dmi.sys.vendor: Notebook To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1218547/+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