No Brightness Control on ASUS X301A-RX130H

Bug #1095276 reported by Ptitphysik on 2013-01-02
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

On ASUS X301A-RX130H, shortcuts fn+f5 (decrease brightness) and fn+f6 (increase brightness) do not work.

All other shortcut FN + * work.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-21-generic 3.5.0-21.32
ProcVersionSignature: Ubuntu 3.5.0-21.32-generic
Uname: Linux 3.5.0-21-generic x86_64
ApportVersion: 2.6.1-0ubuntu9
Architecture: amd64
 /dev/snd/controlC0: malpouch 2014 F.... pulseaudio
 /dev/snd/pcmC0D0p: malpouch 2014 F...m pulseaudio
Date: Wed Jan 2 12:48:07 2013
HibernationDevice: RESUME=UUID=75b627f5-cf9b-4b65-9f8b-0fc77e4db04a
InstallationDate: Installed on 2012-12-21 (12 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
 PATH=(custom, no user)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-21-generic root=UUID=772db45b-f3ad-4e35-9d91-7d583ac4c2e6 ro quiet splash vt.handoff=7
 linux-restricted-modules-3.5.0-21-generic N/A
 linux-backports-modules-3.5.0-21-generic N/A
 linux-firmware 1.95
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog: 08/20/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: X301A.209
dmi.board.asset.tag: ATN12345678901234567 X301A
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX301A.209:bd08/20/2012:svnASUSTeKCOMPUTERINC.:pnX301A:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX301A:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: X301A
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.

Ptitphysik (amalpeyre) wrote :

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
Joseph Salisbury (jsalisbury) wrote :

Would it be possible for you to test the latest upstream kernel? Refer to . Please test the latest v3.8 kernel[0] (Not a kernel in the daily directory) and install both the linux-image and linux-image-extra .deb packages.

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'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.


Changed in linux (Ubuntu):
importance: Undecided → Medium
status: Confirmed → Incomplete
Ptitphysik (amalpeyre) wrote :

The new kernel does not solve the problem.

Now the brightness is set to maximum by default and i can't decrease it in settings.

tags: added: kernel-bug-exists-upstream
Ptitphysik (amalpeyre) on 2013-01-13
Changed in linux (Ubuntu):
status: Incomplete → Confirmed

Ptitphysik, thank you for reporting this and helping make Ubuntu better. As per an update is available for your BIOS (210). If you update to this, does it change anything?

tags: added: bios-outdated needs-upstream-testing
Changed in linux (Ubuntu):
status: Confirmed → Incomplete
Ptitphysik (amalpeyre) on 2013-01-23
Changed in linux (Ubuntu):
status: Incomplete → Fix Released
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