[Lenovo Thinkpad T410] Brightness keys do not change brightness

[Marc Legris]

Using either the increase or decrease brightness key results in osd-message showing the slider value going up or down. However, the actual brightness of the screen stays the same.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic-pae 2.6.38-8.42
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ubuntu 1446 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf2420000 irq 44'
   Mixer name : 'Conexant CX20585'
   Components : 'HDA:14f15069,17aa214c,00100301 HDA:14f12c06,17aa2122,00100000'
   Controls : 8
   Simple ctrls : 5
Card1.Amixer.info:
 Card hw:1 'NVidia'/'HDA NVidia at 0xcdefc000 irq 16'
   Mixer name : 'Nvidia GPU 0b HDMI/DP'
   Components : 'HDA:10de000b,10de0101,00100100'
   Controls : 16
   Simple ctrls : 4
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 6IHT38WW-1.13'
   Mixer name : 'ThinkPad EC 6IHT38WW-1.13'
   Components : ''
   Controls : 1
   Simple ctrls : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Tue May 3 13:29:21 2011
HibernationDevice: RESUME=UUID=84a38231-6e55-4274-938b-6681d3fbe220
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
MachineType: LENOVO 252240U
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic-pae root=UUID=20151c70-6aac-42ab-a943-476bbc03beff ro quiet splash initcall_debug vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-8-generic-pae N/A
 linux-backports-modules-2.6.38-8-generic-pae N/A
 linux-firmware 1.52
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/25/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6IET74WW (1.34 )
dmi.board.name: 252240U
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6IET74WW(1.34):bd10/25/2010:svnLENOVO:pn252240U:pvrThinkPadT410:rvnLENOVO:rn252240U:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 252240U
dmi.product.version: ThinkPad T410
dmi.sys.vendor: LENOVO

[Marc Legris (maaarc-deactivatedaccount-deactivatedaccount-deactivatedaccount-deactivatedaccount-deactivatedaccount)]

This bug is for tracking purposes and should be assigned to Chris Van Hoof

[Victor Tuson Palau (vtuson)]

this does not block certification, but thanks for reporting it

[Stefan Parvu (sparvu)]

If you use NVIDIA drivers you can easily add under xorg.conf the following setting:

Section "Device"
    Identifier "Device0"
    Driver "nvidia"
    VendorName "NVIDIA Corporation"
    Option "RegistryDwords" "EnableBrightnessControl=1"
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
EndSection

This was documented under: http://www.thinkwiki.org/wiki/Category:W510

[Ara Pulido (ara)]

Chris, this bug is not blocking certification, but you may want to have a look to it.

[Marc Legris (maaarc-deactivatedaccount-deactivatedaccount-deactivatedaccount-deactivatedaccount-deactivatedaccount)]

For the W510, brightness keys work without the nvidia driver, and with the nvidia driver the fix in comment #4 does not work.

[Kvieserc (vasiliy-sivovolov)]

For ThinkPad T510 comment #4 is work.

[Ivan Kharlamov (the-paper-men)]

I have Thinkpad T410i and the solution in comment #4 worked flawlessly. However, I use Mint 11.04.

[penalvch (penalvch)]

Marc Legris, thank you for reporting this and helping make Ubuntu better. This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command in the development release from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux <replace-with-bug-number>

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text.

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.

Please let us know your results. Thanks in advance.

[Peter (pesto)]

For ThinkPad T410 with nvidia driver for NVS 3100M the solution in #4 works (Linux Mint 12 (lisa), Edition: Gnome 64-bit)
Section in /etc/X11/xorg.conf

Section "Device"
    Identifier "Device0"
    Driver "nvidia"
    VendorName "NVIDIA Corporation"
    BoardName "NVS 3100M"
    Option "RegistryDwords" "EnableBrightnessControl=1"
EndSection

[Robert Sajdok (ris)]

@Stefan
Your solution works on my Ubuntu 12.04 ThinkPad T410i.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

[penalvch (penalvch)]

Peter / Robert Sajdok / Guillaume Giroux, could you please file a new report by executing the following in a terminal:
ubuntu-bug linux

For more on this, please see the Ubuntu Bug Control and Ubuntu Bug Squad article:
https://wiki.ubuntu.com/Bugs/BestPractices#X.2BAC8-Reporting.Focus_on_One_Issue

and Ubuntu Community article:
https://help.ubuntu.com/community/ReportingBugs

When opening up the new report, please feel free to subscribe me to it. Thank you for your understanding.

Incomplete due to missing action items https://bugs.launchpad.net/ubuntu/+source/linux/+bug/776590/comments/9 and Natty being EOL October 2012.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

[Andrew (coder27)]

The same problem appears after the last update of 12.04 on my Lenovo IdeaPad S205:

Start-Date: 2013-08-21 09:24:10
Commandline: aptdaemon role='role-commit-packages' sender=':1.31'
Install: linux-headers-3.2.0-52-generic:i386 (3.2.0-52.78), linux-image-3.2.0-52-generic:i386 (3.2.0-52.78), linux-headers-3.2.0-52:i386 (3.2.0-52.78)
Upgrade: base-files:i386 (6.5ubuntu6.5, 6.5ubuntu6.6), fglrx-updates:i386 (9.000-0ubuntu0.3, 12.104-0ubuntu0.0.1), linux-headers-generic:i386 (3.2.0.51.61, 3.2.0.52.62), fglrx-amdcccle-updates:i386 (9.000-0ubuntu0.3, 12.104-0ubuntu0.0.1), linux-image-generic:i386 (3.2.0.51.61, 3.2.0.52.62), dosfstools:i386 (3.0.12-1ubuntu1, 3.0.12-1ubuntu1.1), linux-libc-dev:i386 (3.2.0-51.77, 3.2.0-52.78), jockey-common:i386 (0.9.7-0ubuntu7.9, 0.9.7-0ubuntu7.10), jockey-gtk:i386 (0.9.7-0ubuntu7.9, 0.9.7-0ubuntu7.10), linux-generic:i386 (3.2.0.51.61, 3.2.0.52.62)

It worked fine, but after the update the slider pops up, and the real brightness does not change.

[penalvch (penalvch)]

Andrew, if you have a bug in Ubuntu, the Ubuntu Kernel team, Ubuntu Bug Control team, and Ubuntu Bug Squad would like you to please file a new report by executing the following in a terminal while booted into a Ubuntu repository kernel (not a mainline one) via:
ubuntu-bug linux

For more on this, please read the official Ubuntu documentation:
Ubuntu Bug Control and Ubuntu Bug Squad: https://wiki.ubuntu.com/Bugs/BestPractices
Ubuntu Kernel Team: https://wiki.ubuntu.com/KernelTeam/KernelTeamBugPolicies
Ubuntu Community: https://wiki.ubuntu.com/ReportingBugs

When opening up the new report, please feel free to subscribe me to it.

Please note, not filing a new report would delay your problem being addressed as quickly as possible.

No need exists to further comment here. If you have further questions, you are welcome to redirect them to the appropriate mailing list or forum via http://www.ubuntu.com/support/community/mailinglists .

Thank you for your understanding.