The next step that I'd like to take here is to look at what is in "/sys/class/backlight", both without using the boot param "acpi_backlight=vendor" and with it . To see what we might need to do in order to get one backlight interface working, we need to know what others exist. Without the boot param, I'd expect that we'd see intel_backlight, possibly an nvidia brightness, and acpi_video0. With the boot param, acpi_video0 should be replaced with a vendor specific backlight.
Another quick thing that would be very helpful in guiding us to the root of the problem is to try running the following as root "/bin/echo 0 > /sys/class/backlight/intel_backlight/brightness" this will possibly cause acpi_video0 to function properly, and therefore the brightness keys should also function as expected. If this fixes the issue, it will need to be reentered after a shutdown or a wake from suspend, but I think there is an upstart script somewhere that could be tweaked to do that. Also, as a last thought for right now, what version of either nouveau or the proprietary nvidia drivers are you using? -- 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: Clevo W350ST brightness keys don't work on Kubuntu Status in “linux” package in Ubuntu: Confirmed 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: $ 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 Event codes appear correctly. 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 http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu http://ppa.launchpad.net/bumblebee/stable/ubuntu in my package sources Thanks! --- 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/ubuntu/+source/linux/+bug/1218547/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
