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Date
[Bug 1516213] Re: Lowering the brightness turns the monitor black in ubuntu 14.04

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: Roopa <roopasgundur@xxxxxxxxx>
Date: Mon, 16 Nov 2015 05:26:26 -0000
Reply-to: Bug 1516213 <1516213@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Solution for problem number: #1516213 

Lowering the brightness turns the monitor black in ubuntu 14.04

Step 1: Go to Terminal and type the following command. “sudo gedit
/etc/default/grub”

Step 2: A New window opens up with the following content.
GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash”.

Step 3:  Change the content into GRUB_CMDLINE_LINUX_DEFAULT=”quiet
splash acpi_backlight=vendor”. Save the file and close the window.

Step 4: Open the terminal again and type “sudo update-grub”. This will
update the grub and once the computer is rebooted, the problem of
adjusting the brightness will be solved.

-- 
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https://bugs.launchpad.net/bugs/1516213

Title:
  Lowering  the brightness turns the monitor black in ubuntu 14.04

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  whenever the screen brigthness is lowered using the function key the monitor turns black when we are at the lowest point of brightness. This problem exists in ubuntu 14.04
  --- 
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroRelease: Ubuntu 14.04
  DistroVariant: ubuntu
  ExtraDebuggingInterest: I just need to know a workaround
  GraphicsCard:
   VMware SVGA II Adapter [15ad:0405] (prog-if 00 [VGA controller])
     Subsystem: VMware SVGA II Adapter [15ad:0405]
  InstallationDate: Installed on 2015-11-15 (0 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  Lsusb:
   Bus 001 Device 002: ID 054c:05ba Sony Corp. 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB Hub
   Bus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: VMware, Inc. VMware Virtual Platform
  Package: xorg 1:7.7+1ubuntu8
  PackageArchitecture: amd64
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic root=UUID=8e97ec9b-e51a-4604-85f1-cddee15b05fb ro find_preseed=/preseed.cfg auto noprompt priority=critical locale=en_US quiet
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Tags:  trusty ubuntu compiz-0.9
  Uname: Linux 3.13.0-32-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 05/20/2014
  dmi.bios.vendor: Phoenix Technologies LTD
  dmi.bios.version: 6.00
  dmi.board.name: 440BX Desktop Reference Platform
  dmi.board.vendor: Intel Corporation
  dmi.board.version: None
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 1
  dmi.chassis.vendor: No Enclosure
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd05/20/2014:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A:
  dmi.product.name: VMware Virtual Platform
  dmi.product.version: None
  dmi.sys.vendor: VMware, Inc.
  version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Sun Nov 15 11:01:45 2015
  xserver.configfile: default
  xserver.devices:
   input        Power Button         KEYBOARD, id 6
   input        VMware VMware Virtual USB Mouse MOUSE, id 7
   input        AT Translated Set 2 keyboard KEYBOARD, id 8
   input        ImPS/2 Generic Wheel Mouse MOUSE, id 9
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs: Output                                                Virtual2        Virtual3        Virtual4        Virtual5        Virtual6        Virtual7        Virtual8
  xserver.version: 2:1.15.1-0ubuntu2
  xserver.video_driver: vmware
  --- 
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroRelease: Ubuntu 14.04
  DistroVariant: ubuntu
  ExtraDebuggingInterest: I just need to know a workaround
  GraphicsCard:
   Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:0652]
     Subsystem: Dell Device [1028:0652]
  InstallationDate: Installed on 2015-11-05 (10 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Dell Inc. Inspiron 3542
  Package: xorg 1:7.7+1ubuntu8
  PackageArchitecture: amd64
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic root=UUID=a56cc5c0-c833-4665-9362-5f43b50339d5 ro quiet splash acpi_backlight=vendor vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Tags:  trusty ubuntu compiz-0.9
  Uname: Linux 3.13.0-32-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 08/05/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A04
  dmi.board.name: 0RK2KV
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A04
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnDellInc.:bvrA04:bd08/05/2014:svnDellInc.:pnInspiron3542:pvrNotSpecified:rvnDellInc.:rn0RK2KV:rvrA04:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: Inspiron 3542
  dmi.product.version: Not Specified
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Mon Nov 16 10:13:51 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                                1110 
   vendor                                     LGD
  xserver.version: 2:1.15.1-0ubuntu2
  --- 
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroRelease: Ubuntu 14.04
  DistroVariant: ubuntu
  ExtraDebuggingInterest: I just need to know a workaround
  GraphicsCard:
   Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:0652]
     Subsystem: Dell Device [1028:0652]
  InstallationDate: Installed on 2015-11-05 (10 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Dell Inc. Inspiron 3542
  Package: xorg 1:7.7+1ubuntu8
  PackageArchitecture: amd64
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic root=UUID=a56cc5c0-c833-4665-9362-5f43b50339d5 ro quiet splash acpi_backlight=vendor vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Tags:  trusty ubuntu compiz-0.9
  Uname: Linux 3.13.0-32-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 08/05/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A04
  dmi.board.name: 0RK2KV
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A04
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnDellInc.:bvrA04:bd08/05/2014:svnDellInc.:pnInspiron3542:pvrNotSpecified:rvnDellInc.:rn0RK2KV:rvrA04:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: Inspiron 3542
  dmi.product.version: Not Specified
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Mon Nov 16 10:13:51 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                                1110 
   vendor                                     LGD
  xserver.version: 2:1.15.1-0ubuntu2
  --- 
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroRelease: Ubuntu 14.04
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:0652]
     Subsystem: Dell Device [1028:0652]
  InstallationDate: Installed on 2015-11-05 (10 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Dell Inc. Inspiron 3542
  Package: xorg 1:7.7+1ubuntu8
  PackageArchitecture: amd64
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic root=UUID=a56cc5c0-c833-4665-9362-5f43b50339d5 ro quiet splash acpi_backlight=vendor vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Tags:  trusty ubuntu compiz-0.9
  Uname: Linux 3.13.0-32-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 08/05/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A04
  dmi.board.name: 0RK2KV
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A04
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnDellInc.:bvrA04:bd08/05/2014:svnDellInc.:pnInspiron3542:pvrNotSpecified:rvnDellInc.:rn0RK2KV:rvrA04:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: Inspiron 3542
  dmi.product.version: Not Specified
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Mon Nov 16 10:41:31 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                                1110 
   vendor                                     LGD
  xserver.version: 2:1.15.1-0ubuntu2

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