Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.14 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/v3.14-rc7-trusty/ ** 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/1294514 Title: [Toshiba Satellite P850] Keyboard backlight does not work Status in “linux” package in Ubuntu: Incomplete Bug description: Immediately on boot, the backlight is lit. Switching around ACPI settings doesn't seem to help. Booting into Windows then putting it in a state of hibernation, the backlights will work upon the next Ubuntu boot... but only that next boot. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-17-generic 3.11.0-17.31 ProcVersionSignature: Ubuntu 3.11.0-17.31-generic 3.11.10.3 Uname: Linux 3.11.0-17-generic x86_64 ApportVersion: 2.12.5-0ubuntu2.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: xandra 2034 F.... pulseaudio /dev/snd/pcmC0D0p: xandra 2034 F...m pulseaudio Date: Wed Mar 19 08:12:51 2014 HibernationDevice: RESUME=UUID=3b05dd8c-4fa5-4b66-9122-db8094ce57a6 InstallationDate: Installed on 2013-04-27 (325 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: TOSHIBA Satellite P850 MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-17-generic root=UUID=fa00ba6d-045a-4d94-9a40-62932ce0d2e4 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.11.0-17-generic N/A linux-backports-modules-3.11.0-17-generic N/A linux-firmware 1.116.2 SourcePackage: linux UpgradeStatus: Upgraded to saucy on 2013-10-17 (152 days ago) WifiSyslog: Mar 19 08:09:12 meow-Satellite-P850 wpa_supplicant[1162]: wlan0: WPA: Group rekeying completed with bc:05:43:17:be:70 [GTK=TKIP] dmi.bios.date: 09/21/2012 dmi.bios.vendor: TOSHIBA dmi.bios.version: 6.40 dmi.board.asset.tag: * dmi.board.name: QFKAA dmi.board.vendor: TOSHIBA dmi.board.version: 1.00 dmi.chassis.asset.tag: * dmi.chassis.type: 10 dmi.chassis.vendor: TOSHIBA dmi.chassis.version: * dmi.modalias: dmi:bvnTOSHIBA:bvr6.40:bd09/21/2012:svnTOSHIBA:pnSatelliteP850:pvrPSPKEU-05500C:rvnTOSHIBA:rnQFKAA:rvr1.00:cvnTOSHIBA:ct10:cvr*: dmi.product.name: Satellite P850 dmi.product.version: PSPKEU-05500C dmi.sys.vendor: TOSHIBA To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1294514/+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