Public bug reported: (Fujitsu Lifebook A512 - Ubuntu 14.04 - Linux 3.13.0-24-generic x86_64)
Pressing Fn+F6 or Fn+F7 the brightness doesn't change. WORKAROUND (found here http://ubuntuforums.org/showthread.php?t=2192471) 1) The command: for i in /sys/class/backlight/*; do echo $i;cat $i/brightness;cat $i/max_brightness;done shows this output: /sys/class/backlight/acpi_video0 1 100 /sys/class/backlight/intel_backlight 4882 4882 2) Then I've created the /usr/share/X11/xorg.conf.d/20-intel.conf file to set the "intel_backlight" interfece, with the following lines: Section "Device" Identifier "card0" Driver "intel" Option "Backlight" "intel_backlight" BusID "PCI:0:2:0" EndSection This makes the brightness shortcuts Fn+F6 and Fn+F7 work. EXTRA INFOS - I run "ubuntu-bug linux" on a new installation of the 14.04 in order to get informations of the original setup of the system. The workaround has been tried on another 14.04 installation on the same computer. - I didn't install any extra packages. Everything we need to make the hot keys Fn+F6/Fn+F7 work is already in the system. It seems to be a "setup problem".. maybe related to backlight or xorg.. - The lines in /usr/share/X11/xorg.conf.d/20-intel.conf are just a copy/paste taken from the ubuntuforums.org topic. I've just tried to use it and luckily it worked. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-24-generic 3.13.0-24.47 ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: pinguinux 1731 F.... pulseaudio CurrentDesktop: Unity Date: Sun May 11 10:21:22 2014 HibernationDevice: RESUME=UUID=f6e9afa5-5b2f-4c3d-af00-aff1122b6fe6 InstallationDate: Installed on 2014-04-18 (22 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: FUJITSU LIFEBOOK A512 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=1cd50414-50f8-4f1c-9133-e7f3375c0415 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-24-generic N/A linux-backports-modules-3.13.0-24-generic N/A linux-firmware 1.127 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/23/2013 dmi.bios.vendor: FUJITSU // Phoenix Technologies Ltd. dmi.bios.version: Version 1.16 dmi.board.name: FJNBB29 dmi.board.vendor: FUJITSU dmi.chassis.type: 10 dmi.chassis.vendor: FUJITSU dmi.modalias: dmi:bvnFUJITSU//PhoenixTechnologiesLtd.:bvrVersion1.16:bd10/23/2013:svnFUJITSU:pnLIFEBOOKA512:pvr:rvnFUJITSU:rnFJNBB29:rvr:cvnFUJITSU:ct10:cvr: dmi.product.name: LIFEBOOK A512 dmi.sys.vendor: FUJITSU ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318299 Title: Fujitsu Lifebook A512 - Brightness hot keys Fn+F6/Fn+F7 don't work out of the box To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1318299/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
