[Toshiba Satellite Pro C660 PSC1RA-003001] Brightness controls doesn't work

[Bob M Brown]

Backlight control does not work with Ubuntu 13.10 64-bit. Hot keys Fn 6 and Fn 7 are active but have no effect on the brightness of the LCD.

WORKAROUND: After installing a fresh 14.04 and using the NVIDIA binary driver 331.38 the backlight controls work properly with no extra configuration required.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-12-generic 3.11.0-12.19 [modified: boot/vmlinuz-3.11.0-12-generic]
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: bob 2276 F.... pulseaudio
 /dev/snd/controlC0: bob 2276 F.... pulseaudio
Date: Thu Apr 3 00:28:56 2014
HibernationDevice: RESUME=UUID=9a8a77f9-1472-4326-b2c1-890db3a43ae9
InstallationDate: Installed on 2014-04-02 (0 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: TOSHIBA Satellite PRO C660
MarkForUpload: True
ProcFB:
 0 nouveaufb
 1 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-12-generic root=UUID=5ec3cfc7-7ca3-48a1-b326-23fcf0479447 ro iset gfxpayload=text
RelatedPackageVersions:
 linux-restricted-modules-3.11.0-12-generic N/A
 linux-backports-modules-3.11.0-12-generic N/A
 linux-firmware 1.116.2
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/31/2011
dmi.bios.vendor: TOSHIBA
dmi.bios.version: 1.20
dmi.board.asset.tag: NULL
dmi.board.name: PWWHA
dmi.board.vendor: TOSHIBA
dmi.board.version: 1.00
dmi.chassis.asset.tag: *
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnTOSHIBA:bvr1.20:bd08/31/2011:svnTOSHIBA:pnSatellitePROC660:pvrPSC1RA-003001:rvnTOSHIBA:rnPWWHA:rvr1.00:cvnTOSHIBA:ct10:cvrN/A:
dmi.product.name: Satellite PRO C660
dmi.product.version: PSC1RA-003001
dmi.sys.vendor: TOSHIBA

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.14 kernel[0].

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.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14-trusty/

[Bob M Brown (gurubob)]

Hello - sorry for the delay. I wanted to reinstall after 14.04 was out. After installing a fresh 14.04 and using the NVIDIA binary driver (ver 331.38 in this instance) the backlight controls work properly with no extra configuration required. They did not however work using the Nouveau display driver however I was compelled to use the binary driver as graphics performance was poor.

Do you still want to leave this bug open?

[Launchpad Janitor (janitor)]

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