10de:0def [Lenovo Thinkpad T530] With discrete graphics brightness control doesn't work
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Linux |
New
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Incomplete
|
Low
|
Unassigned |
Bug Description
This laptop has Optimus. Following instructions on https:/
acpi_backlight=
I have tried /usr/share/
I have tried editing /sys/class/
None of these have enabled brightness control.
WORKAROUND: If I boot with integrated graphics instead of Nvidia, it works fine.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-
ProcVersionSign
Uname: Linux 3.5.0-18-generic x86_64
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
Date: Tue Nov 27 23:39:07 2012
HibernationDevice: RESUME=
InstallationDate: Installed on 2012-11-27 (0 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: LENOVO 2359CTO
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.95
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/13/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: G4ET62WW (2.04 )
dmi.board.
dmi.board.name: 2359CTO
dmi.board.vendor: LENOVO
dmi.board.version: Win8 Pro DPK TPG
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 2359CTO
dmi.product.
dmi.sys.vendor: LENOVO
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