Confirmed on a Thinkpad T61 after upgrade to Trusty. Possible duplicate: Bug 1280927
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1268252 Title: Brightness settings stopped working after upgrade Status in “linux” package in Ubuntu: Confirmed Status in “linux” source package in Trusty: Confirmed Bug description: I upgraded from saucy to trusty on my lenovo g505s laptop. After the upgrade, both the physical key and the brightness settings in the gnome-control centre have stopped working. Whatever level of brightness i decrease it to, it always stays on maximum. I'm able to reproduce this only on kernel 3.13. Works as its supposed to on kernel 3.12 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: gnome-control-center 1:3.6.3-0ubuntu50 ProcVersionSignature: Ubuntu 3.13.0-2.17-generic 3.13.0-rc7 Uname: Linux 3.13.0-2-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 2.13.1-0ubuntu1 Architecture: amd64 CurrentDesktop: Unity Date: Sun Jan 12 09:17:00 2014 ExecutablePath: /usr/bin/gnome-control-center.real InstallationDate: Installed on 2013-11-16 (56 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) SourcePackage: gnome-control-center UpgradeStatus: Upgraded to trusty on 2014-01-06 (5 days ago) --- ApportVersion: 2.13.1-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: krishnan 3070 F.... pulseaudio /dev/snd/controlC0: krishnan 3070 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=c545b9da-fef4-4530-9051-29276dfd842c InstallationDate: Installed on 2013-11-16 (58 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: LENOVO INVALID NonfreeKernelModules: fglrx Package: linux (not installed) ProcFB: 0 simple ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-2-generic root=UUID=0b897d24-0c02-4f57-9596-5fcd681c5ed0 ro quiet splash nomodeset vt.handoff=7 ProcVersionSignature: Ubuntu 3.13.0-2.17-generic 3.13.0-rc7 RelatedPackageVersions: linux-restricted-modules-3.13.0-2-generic N/A linux-backports-modules-3.13.0-2-generic N/A linux-firmware 1.121 StagingDrivers: rts5139 Tags: trusty staging Uname: Linux 3.13.0-2-generic x86_64 UpgradeStatus: Upgraded to trusty on 2014-01-06 (6 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo dmi.bios.date: 04/23/2013 dmi.bios.vendor: LENOVO dmi.bios.version: 83CN12WW(V1.01) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lenovo G505s dmi.board.vendor: LENOVO dmi.board.version: 00000000Not Defined dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G505s dmi.modalias: dmi:bvnLENOVO:bvr83CN12WW(V1.01):bd04/23/2013:svnLENOVO:pnINVALID:pvrLenovoG505s:rvnLENOVO:rnLenovoG505s:rvr00000000NotDefined:cvnLENOVO:ct10:cvrLenovoG505s: dmi.product.name: INVALID dmi.product.version: Lenovo G505s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268252/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp