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[Tommy Miller <tommydrum777@xxxxxxxxx>]

I may add that it may not be  time that was affecting the issue, I think
it may have been caused by focusing on a particular window/program.
Untested, but suspected.

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https://bugs.launchpad.net/bugs/1315069

Title:
  [Gateway NV77H] [Fixed?] Brightness Keyboard Shortcuts no longer
  working after short time

Status in “linux” package in Ubuntu:
  Fix Released

Bug description:
  [From last change: not sure if it was fixed, but the issue seems to
  have stopped within the last week of use, doing plenty of updates]

  
  I am currently using Ubuntu 14.04 (upgraded from 13.10, and from that 13.04) a Gateway NV77H Series laptop with an i5 core and intel's backlight controller. After the initial installation, the first bug workaround I had to do was set grub to have acpi_backlight=vendor, and that made brightness work in the first place. That should eventually be fixed, but the bigger problem I am having currently, is after the last upgrade to 14.04, the brightness keyboard shortcuts no longer work after a short period of time after boot. After reboot and log on, it all works fine, but after I focus to a window, it never seems to recover.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46
  ProcVersionSignature: Ubuntu 3.13.0-24.46-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:  tommydrum   2760 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Thu May  1 09:47:07 2014
  HibernationDevice: RESUME=UUID=7e7c38c2-7c45-4050-ab32-08f9031879ad
  InstallationDate: Installed on 2013-10-25 (187 days ago)
  InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Release amd64 (20131017)
  MachineType: Gateway NV77H
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=af4ccd2c-4d9b-4687-ab2d-4f3795910aae ro acpi=noirq quiet splash acpi_backlight=vendor intel_pstate=enable
  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: Upgraded to trusty on 2014-03-29 (33 days ago)
  dmi.bios.date: 08/09/2012
  dmi.bios.vendor: Gateway
  dmi.bios.version: V1.21
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: SJV70_HR
  dmi.board.vendor: Gateway
  dmi.board.version: Base Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Gateway
  dmi.chassis.version: V1.21
  dmi.modalias: dmi:bvnGateway:bvrV1.21:bd08/09/2012:svnGateway:pnNV77H:pvrV1.21:rvnGateway:rnSJV70_HR:rvrBaseBoardVersion:cvnGateway:ct10:cvrV1.21:
  dmi.product.name: NV77H
  dmi.product.version: V1.21
  dmi.sys.vendor: Gateway

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