As a workaround, creating an xorg.conf file and specifying "intel_backlight" seems to work, but I would love for this to work out of the box. Does something need to be changed in the kernel to recognize that this model of Toshiba uses the Intel Backlight?
-- 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/1385453 Title: Toshiba R700 backlight control not always working Status in The Linux Kernel: Unknown Status in “linux” package in Ubuntu: Triaged Bug description: When returning from sleep mode, I lose backlight control via Fn-F7. Restarting the system restores control. I am running Ubuntu 14.04 64 bit. ~$ uname -psrv Linux 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC 2014 x86_64 I could also adjust the brightness from the terminal: ~$ cat /sys/class/backlight/intel_backlight/brightness 1030 ~$ grep . /sys/class/backlight/intel_backlight/* /sys/class/backlight/intel_backlight/actual_brightness:1030 /sys/class/backlight/intel_backlight/bl_power:0 /sys/class/backlight/intel_backlight/brightness:1030 /sys/class/backlight/intel_backlight/max_brightness:4539 So, to temporarily increase the screen brightness: ~$ echo 3030 | sudo tee /sys/class/backlight/intel_backlight/brightness 3030 But that does not give back control via Fn-F7, it just gives an independent way of adjusting the backlight. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-37-generic 3.13.0-37.64 ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7 Uname: Linux 3.13.0-37-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: asp 2789 F.... pulseaudio CRDA: country PE: (2402 - 2482 @ 40), (N/A, 20) (5735 - 5835 @ 40), (N/A, 30) CurrentDesktop: Unity Date: Fri Oct 24 13:56:26 2014 HibernationDevice: RESUME=UUID=7d358de7-c06d-487c-959d-6d6f94292a9c InstallationDate: Installed on 2014-03-08 (229 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140304) MachineType: TOSHIBA PORTEGE R700 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-37-generic root=UUID=82477238-1cd0-4280-b615-9e54c4178914 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-37-generic N/A linux-backports-modules-3.13.0-37-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/22/2011 dmi.bios.vendor: TOSHIBA dmi.bios.version: Version 2.20 dmi.board.asset.tag: 0000000000 dmi.board.name: Portable PC dmi.board.vendor: TOSHIBA dmi.board.version: Version A0 dmi.chassis.asset.tag: 0000000000 dmi.chassis.type: 10 dmi.chassis.vendor: TOSHIBA dmi.chassis.version: Version 1.0 dmi.modalias: dmi:bvnTOSHIBA:bvrVersion2.20:bd12/22/2011:svnTOSHIBA:pnPORTEGER700:pvrPT311Q-02S02U:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0: dmi.product.name: PORTEGE R700 dmi.product.version: PT311Q-02S02U dmi.sys.vendor: TOSHIBA To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1385453/+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
