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[Launchpad Bug Tracker <1227188@xxxxxxxxxxxxxxxxxx>]

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Similar to bug 11588934, I get acpi_video0 & intel_backlight, or
(ideapad & intel_backlight) depending on the osi_* kernel cmd line
settings. The one that is preferred / used (acpi_video0 / ideapad) do
not work. Whereas intel_backlight is the one that does work. I have
Lenovo IdeaPad Yoga 13.

I have now specified:
/etc/X11/xorg.conf.d/backlight.conf
Section "Device"
  Identifier "Device0"
  Option "Backlight" "intel_backlight"
EndSection

I guess a similar blacklist as was applied for HP should be applied in
upstream kernel for Yoga?

Regards,

Dmitrijs.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: xorg 1:7.7+1ubuntu5
ProcVersionSignature: Ubuntu 3.11.0-4.9-generic 3.11.0-rc7
Uname: Linux 3.11.0-4-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 2.12.1-0ubuntu3
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
Date: Wed Sep 18 09:54:16 2013
DistUpgraded: Fresh install
DistroCodename: saucy
DistroVariant: ubuntu
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: Lenovo Device [17aa:3977]
InstallationDate: Installed on 2013-08-29 (20 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130829)
MachineType: LENOVO 2191
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-4-generic.efi.signed root=UUID=5c176060-d588-4044-87b6-50b785b931b1 ro quiet splash acpi_backlight=legacy acpi_osi=Linux vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/21/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: 66CN54WW
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 Yoga 13
dmi.modalias: dmi:bvnLENOVO:bvr66CN54WW:bd01/21/2013:svnLENOVO:pn2191:pvrLenovoIdeaPadYoga13:rvnLENOVO:rnINVALID:rvr31900003WIN8STDMLT:cvnLENOVO:ct10:cvrLenovoIdeaPadYoga13:
dmi.product.name: 2191
dmi.product.version: Lenovo IdeaPad Yoga 13
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.10+13.10.20130828.2-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.46-1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.2-1ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.2-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.14.2.901-2ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.14-4ubuntu3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
xserver.bootTime: Wed Sep 18 09:47:52 2013
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id                                 864 
 vendor                                     LGD
xserver.version: 2:1.14.2.901-2ubuntu4

** Affects: linux (Ubuntu)
     Importance: Low
         Status: Incomplete


** Tags: amd64 apport-bug compiz-0.9 saucy ubuntu
-- 
brightness doesn't work on Lenovo IdeaPad Yoga 13
https://bugs.launchpad.net/bugs/1227188
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