Public bug reported:
I can't adjust display brightness of my laptop due to that my battery is
getting drained soon this reduces my laptop performance on Ubuntu system
while I can adjust on Windows please fix this issue.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-53-generic 3.13.0-53.89
ProcVersionSignature: Ubuntu 3.13.0-53.89-generic 3.13.11-ckt19
Uname: Linux 3.13.0-53-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: umesh 2397 F.... pulseaudio
/dev/snd/controlC0: umesh 2397 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun Jan 17 03:34:26 2016
HibernationDevice: RESUME=UUID=8d0f512d-2043-4a0b-83c0-3fc24ea19fdd
InstallationDate: Installed on 2015-01-13 (368 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: LENOVO 80E3
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-53-generic.efi.signed
root=UUID=dd65051a-1811-4eda-8e26-6c24c3b0cf44 ro acpi_backlight=vendor quiet
splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-53-generic N/A
linux-backports-modules-3.13.0-53-generic N/A
linux-firmware 1.127.12
SourcePackage: linux
StagingDrivers: rts5139
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/26/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: A2CN25WW(V1.07)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Lancer 5B2
dmi.board.vendor: LENOVO
dmi.board.version: SDK0F82990 WIN
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo G50-45
dmi.modalias:
dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45:
dmi.product.name: 80E3
dmi.product.version: Lenovo G50-45
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug staging trusty
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1535005
Title:
Display brightness is not adjustable
Status in linux package in Ubuntu:
New
Bug description:
I can't adjust display brightness of my laptop due to that my battery
is getting drained soon this reduces my laptop performance on Ubuntu
system while I can adjust on Windows please fix this issue.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-53-generic 3.13.0-53.89
ProcVersionSignature: Ubuntu 3.13.0-53.89-generic 3.13.11-ckt19
Uname: Linux 3.13.0-53-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: umesh 2397 F.... pulseaudio
/dev/snd/controlC0: umesh 2397 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun Jan 17 03:34:26 2016
HibernationDevice: RESUME=UUID=8d0f512d-2043-4a0b-83c0-3fc24ea19fdd
InstallationDate: Installed on 2015-01-13 (368 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64
(20140722.2)
MachineType: LENOVO 80E3
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-53-generic.efi.signed
root=UUID=dd65051a-1811-4eda-8e26-6c24c3b0cf44 ro acpi_backlight=vendor quiet
splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-53-generic N/A
linux-backports-modules-3.13.0-53-generic N/A
linux-firmware 1.127.12
SourcePackage: linux
StagingDrivers: rts5139
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/26/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: A2CN25WW(V1.07)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Lancer 5B2
dmi.board.vendor: LENOVO
dmi.board.version: SDK0F82990 WIN
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo G50-45
dmi.modalias:
dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45:
dmi.product.name: 80E3
dmi.product.version: Lenovo G50-45
dmi.sys.vendor: LENOVO
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