SOLVED. By removing any acpi options added to the kernel boot parameter lines in GRUB.
update-grub probably not needed but also did apt-get update / upgrade downloaded the 13.10-beta2 amd / catalyst driver from amd. first try at installing failed, it said something about missing packages / files. After investigation it appears apt thought I had the linux- headers-3.2.0.54 installed ok, but when I looked for the missing file - it was no place to be found! I forced apt to reinstall the headers (both generic and all packages) and for good measure the kernel-image: apt-get --reinstall install linux-headers-3.2.0-54 apt-get --reinstall install linux-headers-3.2.0-54-generic apt-get --reinstall install linux-image-3.2.0.54-generic after that I could install the drivers ok from AMD and it WORKS! up/down brightness are back! (after a reboot) I also tested this with the upstream kernel 3.2.50 as suggested near the top of this thread and the drivers installed ok. I can confirm the keys are now working with that version of the kernel too. So, The Lenovo S205, (AMD Radeon HD 6310 Graphics) seems not to work with the generic drives, or AMD's 13.4 drivers. BUT does work ok with the AMD 13.10-beta2 drivers. Home this helps. Derek -- 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/1214752 Title: Lenovo Ideapad S205] Brightness keys do not change brightness after the last update Status in “linux” package in Ubuntu: Incomplete Bug description: 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. It worked before this update^ 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) ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-52-generic 3.2.0-52.78 ProcVersionSignature: Ubuntu 3.2.0-52.78-generic 3.2.48 Uname: Linux 3.2.0-52-generic i686 NonfreeKernelModules: fglrx .etc.asound.conf: defaults.ctl.card 1 defaults.pcm.card 1 defaults.timer.card 1 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu17.4 Architecture: i386 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 1: SB [HDA ATI SB], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: andrew 1628 f.... lxpanel Card0.Amixer.info: Card hw:0 'Generic'/'HD-Audio Generic at 0x90244000 irq 43' Mixer name : 'ATI R6xx HDMI' Components : 'HDA:1002aa01,00aa0100,00100200' Controls : 6 Simple ctrls : 1 Card0.Amixer.values: Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [off] Card1.Amixer.info: Card hw:1 'SB'/'HDA ATI SB at 0x90240000 irq 16' Mixer name : 'Conexant CX20590' Components : 'HDA:14f1506e,17aa6005,00100003' Controls : 9 Simple ctrls : 6 Date: Wed Aug 21 10:23:24 2013 HibernationDevice: RESUME=UUID=61f0b28a-c480-44b1-986c-b4ef7beacbe8 InstallationMedia: Lubuntu 12.04 "Precise Pangolin" - Release i386 (20120423) MachineType: LENOVO Brazos MarkForUpload: True ProcEnviron: LANGUAGE=ru_RU:ru TERM=xterm PATH=(custom, no user) LANG=ru_RU.UTF-8 SHELL=/bin/bash ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-52-generic root=UUID=ac66b454-53c5-4cbf-a577-ae4ea09be832 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.2.0-52-generic N/A linux-backports-modules-3.2.0-52-generic N/A linux-firmware 1.79.6 SourcePackage: linux StagingDrivers: rts5139 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/10/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 4BCN24WW dmi.board.asset.tag: Base Board Asset Tag Unknown dmi.board.name: Inagua dmi.board.vendor: LENOVO dmi.board.version: 109-B78210-00A dmi.chassis.asset.tag: Chassis Asset Tag Unknown dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Chassis Version Unknown dmi.modalias: dmi:bvnLENOVO:bvr4BCN24WW:bd08/10/2011:svnLENOVO:pnBrazos:pvrIdeapadS205:rvnLENOVO:rnInagua:rvr109-B78210-00A:cvnLENOVO:ct10:cvrChassisVersionUnknown: dmi.product.name: Brazos dmi.product.version: Ideapad S205 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1214752/+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