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[Bug 1441675] [NEW] screen brightness arrows no longer work after disconnecting external monitor

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Public bug reported:

Noticed after disconnecting external monitor today that the Fn-Left and Fn-Right keys, which normally 
1) Trigger the display of a sun icon with a progress bar of the amount of supposed brightness the screen is supposed to have 
2) actually changes the amount of brightness that the screen is supposed to have

currently only does (1) (ie not (2)).

Ubuntu 15.04

xorg:
  Installed: 1:7.7+7ubuntu4
  Candidate: 1:7.7+7ubuntu4

xserver-xorg-video-nouveau:
  Installed: 1:1.0.11-1ubuntu2build1
  Candidate: 1:1.0.11-1ubuntu2build1

Linux Hedy 3.19.0-12-generic #12-Ubuntu SMP Fri Apr 3 04:03:26 UTC 2015
x86_64 x86_64 x86_64 GNU/Linux

01:00.0 3D controller: NVIDIA Corporation GF117M [GeForce 610M/710M/820M
/ GT 620M/625M/630M/720M] (rev a1)

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: xorg 1:7.7+7ubuntu4
ProcVersionSignature: Ubuntu 3.19.0-12.12-generic 3.19.3
Uname: Linux 3.19.0-12-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 2.17-0ubuntu1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: GNOME
Date: Wed Apr  8 10:50:17 2015
DistUpgraded: Fresh install
DistroCodename: vivid
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Device [1025:0689]
   Subsystem: Acer Incorporated [ALI] GeForce 710M [1025:0689]
InstallationDate: Installed on 2014-07-09 (272 days ago)
InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Alpha amd64 (20140708)
MachineType: Acer TravelMate P273-MG
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-12-generic root=UUID=885e04f0-bd26-4885-aa1c-f134c674b8ff ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/27/2013
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V2.11
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: BA70_HC
dmi.board.vendor: Acer
dmi.board.version: Type2 - Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsydeCorp.:bvrV2.11:bd11/27/2013:svnAcer:pnTravelMateP273-MG:pvrV2.11:rvnAcer:rnBA70_HC:rvrType2-BoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.name: TravelMate P273-MG
dmi.product.version: V2.11
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.12.1+15.04.20150330-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.59-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
xserver.bootTime: Sat Apr  4 03:31:26 2015
xserver.configfile: default
xserver.errors:
 Failed to load module "nvidia" (module does not exist, 0)
 Failed to load module "nvidia" (module does not exist, 0)
 NOUVEAU(G0): [XvMC] Failed to initialize extension.
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id                                5278 
 vendor                                     AUO
xserver.version: 2:1.17.1-0ubuntu3

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug ubuntu vivid

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1441675

Title:
  screen brightness arrows no longer work after disconnecting external
  monitor

Status in xorg package in Ubuntu:
  New

Bug description:
  Noticed after disconnecting external monitor today that the Fn-Left and Fn-Right keys, which normally 
  1) Trigger the display of a sun icon with a progress bar of the amount of supposed brightness the screen is supposed to have 
  2) actually changes the amount of brightness that the screen is supposed to have

  currently only does (1) (ie not (2)).

  Ubuntu 15.04

  xorg:
    Installed: 1:7.7+7ubuntu4
    Candidate: 1:7.7+7ubuntu4

  xserver-xorg-video-nouveau:
    Installed: 1:1.0.11-1ubuntu2build1
    Candidate: 1:1.0.11-1ubuntu2build1

  Linux Hedy 3.19.0-12-generic #12-Ubuntu SMP Fri Apr 3 04:03:26 UTC
  2015 x86_64 x86_64 x86_64 GNU/Linux

  01:00.0 3D controller: NVIDIA Corporation GF117M [GeForce
  610M/710M/820M / GT 620M/625M/630M/720M] (rev a1)

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-12.12-generic 3.19.3
  Uname: Linux 3.19.0-12-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.17-0ubuntu1
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: GNOME
  Date: Wed Apr  8 10:50:17 2015
  DistUpgraded: Fresh install
  DistroCodename: vivid
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: Yes, including running git bisection searches
  GraphicsCard:
   Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Acer Incorporated [ALI] Device [1025:0689]
     Subsystem: Acer Incorporated [ALI] GeForce 710M [1025:0689]
  InstallationDate: Installed on 2014-07-09 (272 days ago)
  InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Alpha amd64 (20140708)
  MachineType: Acer TravelMate P273-MG
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-12-generic root=UUID=885e04f0-bd26-4885-aa1c-f134c674b8ff ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/27/2013
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: V2.11
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: BA70_HC
  dmi.board.vendor: Acer
  dmi.board.version: Type2 - Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsydeCorp.:bvrV2.11:bd11/27/2013:svnAcer:pnTravelMateP273-MG:pvrV2.11:rvnAcer:rnBA70_HC:rvrType2-BoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
  dmi.product.name: TravelMate P273-MG
  dmi.product.version: V2.11
  dmi.sys.vendor: Acer
  version.compiz: compiz 1:0.9.12.1+15.04.20150330-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.59-0ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
  xserver.bootTime: Sat Apr  4 03:31:26 2015
  xserver.configfile: default
  xserver.errors:
   Failed to load module "nvidia" (module does not exist, 0)
   Failed to load module "nvidia" (module does not exist, 0)
   NOUVEAU(G0): [XvMC] Failed to initialize extension.
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                5278 
   vendor                                     AUO
  xserver.version: 2:1.17.1-0ubuntu3

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