[Lenovo T420s] Brightness keys make the indicator work, but don't actually dim or brighten the screen
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Won't Fix
|
Medium
|
Robert Hooker | ||
Natty |
Invalid
|
Undecided
|
Unassigned | ||
Precise |
Invalid
|
Medium
|
Robert Hooker | ||
nvidia-common (Ubuntu) |
Fix Released
|
Medium
|
Alberto Milone | ||
Precise |
Fix Released
|
Medium
|
Alberto Milone |
Bug Description
This is weird... I'm running the nvidia-current to get 3d and Unity on a Thinkpad T420s and doing Natty certification testing in this config.
When I hit Fn-Home/End (the brightness Function keys) the brightness indicator appears in the upper right corner, and the bar actually changes as it should, but the screen never brightens or dims. Even when the indicator says that the brightness is at the lowest level, the screen is stuck at the same brightness level.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-
ProcVersionSign
Uname: Linux 2.6.38-
NonfreeKernelMo
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xf4320000 irq 48'
Mixer name : 'Conexant CX20590'
Components : 'HDA:14f1506e,
Controls : 8
Simple ctrls : 5
Card1.Amixer.info:
Card hw:1 'NVidia'/'HDA NVidia at 0xf3000000 irq 17'
Mixer name : 'Nvidia GPU 1c HDMI/DP'
Components : 'HDA:10de001c,
Controls : 4
Simple ctrls : 1
Card1.Amixer.
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'
Mixer name : 'ThinkPad EC (unknown)'
Components : ''
Controls : 1
Simple ctrls : 1
Card29.
Simple mixer control 'Console',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Fri Apr 29 18:58:25 2011
HibernationDevice: RESUME=
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
MachineType: LENOVO 417024U
ProcEnviron:
LANGUAGE=en_US:en
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.52
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/04/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8CET30WW (1.07 )
dmi.board.
dmi.board.name: 417024U
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 417024U
dmi.product.
dmi.sys.vendor: LENOVO
Related branches
tags: | added: blocks-hwcert |
Changed in linux (Ubuntu Natty): | |
status: | New → Confirmed |
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
Changed in linux (Ubuntu): | |
assignee: | Chris Van Hoof (vanhoof) → Robert Hooker (sarvatt) |
tags: | added: hwe-blocker |
tags: | removed: blocks-hwcert |
tags: | added: blocks-hwcert-enablement |
Changed in nvidia-common (Ubuntu): | |
status: | New → Triaged |
assignee: | nobody → Alberto Milone (albertomilone) |
importance: | Undecided → Medium |
no longer affects: | nvidia-common (Ubuntu Natty) |
Changed in nvidia-common (Ubuntu Precise): | |
status: | Triaged → In Progress |
Changed in linux (Ubuntu Precise): | |
status: | Confirmed → Invalid |
Changed in linux (Ubuntu Natty): | |
status: | Confirmed → Invalid |
Chris, can you have a look, please?