Just to add, I noticed above that the original bug refers to nvidia rather than intel graphics, and the fix I listed is particularly appropriate only for Portege laptops with Intel graphics. The symptoms for intel graphics seems to be identical to that listed in the original bug report.
-- 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/934095 Title: Backlight control does not work correctly on Toshiba Satellite L750-17P. Status in “linux” package in Ubuntu: Incomplete Bug description: Fn+f6 & fn+f7 doesn't let me decrease/increase the backlight/brightness, only after putting the laptop to sleep and waking it up again does the backlight bar actually appear when I hit fn+f6 but it still doesn't decrease the backlight. The symptoms appear to be exactly the same as this other slightly older toshiba model posted here https://bugs.launchpad.net/ubuntu/+source/linux/+bug/850065 UPDATE: Heres a way to turn down the backlight https://bugs.launchpad.net/ubuntu/+source/linux/+bug/934095/comments/34 --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.23-0ubuntu4 Architecture: i386 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: odin 1587 F.... pulseaudio /dev/snd/controlC0: odin 1587 F.... pulseaudio CRDA: Error: [Errno 2] Filen eller katalogen finns inte Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xc3400000 irq 50' Mixer name : 'Conexant CX20585' Components : 'HDA:14f15069,1179fc50,00100302' Controls : 13 Simple ctrls : 8 Card1.Amixer.info: Card hw:1 'NVidia'/'HDA NVidia at 0xc3000000 irq 17' Mixer name : 'Nvidia GPU 14 HDMI/DP' Components : 'HDA:10de0014,10de0101,00100100' Controls : 16 Simple ctrls : 4 DistroRelease: Ubuntu 11.10 HibernationDevice: RESUME=UUID=2a275915-f56c-4620-a9fa-18c4d293dc71 InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012) MachineType: TOSHIBA SATELLITE L750 NonfreeKernelModules: nvidia Package: linux (not installed) ProcEnviron: PATH=(custom, no user) LANG=sv_SE.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-16-generic-pae root=UUID=ca8610c9-3d1e-47af-bb6c-f72f5bee6316 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.0.0-16.28-generic-pae 3.0.17 RelatedPackageVersions: linux-restricted-modules-3.0.0-16-generic-pae N/A linux-backports-modules-3.0.0-16-generic-pae N/A linux-firmware 1.60 StagingDrivers: mei Tags: oneiric running-unity staging Uname: Linux 3.0.0-16-generic-pae i686 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare dmi.bios.date: 10/14/2011 dmi.bios.vendor: INSYDE dmi.bios.version: 2.70 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: Base Board Product Name dmi.board.vendor: Intel Corp. dmi.board.version: Base Board Version dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: OEM Chassis Manufacturer dmi.chassis.version: OEM Chassis Version dmi.modalias: dmi:bvnINSYDE:bvr2.70:bd10/14/2011:svnTOSHIBA:pnSATELLITEL750:pvrPSK2YE-0FR01CN5:rvnIntelCorp.:rnBaseBoardProductName:rvrBaseBoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion: dmi.product.name: SATELLITE L750 dmi.product.version: PSK2YE-0FR01CN5 dmi.sys.vendor: TOSHIBA To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/934095/+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
