Public bug reported:
Brightness control not working
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.10.0-40.44~16.04.1-generic 4.10.17
Uname: Linux 4.10.0-40-generic x86_64
.tmp.unity_support_test.0:
ApportVersion: 2.20.1-0ubuntu2.13
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
Date: Sat Dec 2 17:53:21 2017
DistUpgraded: Fresh install
DistroCodename: xenial
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev
09) (prog-if 00 [VGA controller])
Subsystem: Lenovo 3rd Gen Core processor Graphics Controller [17aa:3904]
InstallationDate: Installed on 2017-11-30 (1 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
MachineType: LENOVO 20211
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-40-generic.efi.signed
root=UUID=101a39ce-07bc-4b02-87e9-77428c23bae1 ro quiet splash
acpi_backlight=vendor vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/10/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: 71CN45WW(V1.18)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: INVALID
dmi.board.vendor: LENOVO
dmi.board.version: 31900003WIN8 STD MLT
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo IdeaPad P400 Touch
dmi.modalias:
dmi:bvnLENOVO:bvr71CN45WW(V1.18):bd05/10/2013:svnLENOVO:pn20211:pvrLenovoIdeaPadP400Touch:rvnLENOVO:rnINVALID:rvr31900003WIN8STDMLT:cvnLENOVO:ct10:cvrLenovoIdeaPadP400Touch:
dmi.product.name: 20211
dmi.product.version: Lenovo IdeaPad P400 Touch
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.76-1~ubuntu16.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 17.0.7-0ubuntu0.16.04.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 17.0.7-0ubuntu0.16.04.2
version.xserver-xorg-core: xserver-xorg-core N/A
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
xserver.bootTime: Sat Dec 2 16:42:49 2017
xserver.configfile: default
xserver.errors: intel(0): Unrecognised backlight control interface 'ideapad'
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 8254
vendor AUO
xserver.version: 2:1.19.3-1ubuntu1~16.04.4
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug compiz-0.9 ubuntu xenial
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https://bugs.launchpad.net/bugs/1735945
Title:
Brightness control not working
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