According to dpkg log, this issue happened on fglrx-updates 2:12.104-0ubuntu0.0.1
Verified with 12.04.4 + fglrx drivers on 201206-11396 fglrx - 2:13.101-0ubuntu0.0.1 fglrx-updates - 2:13.125-0ubuntu0.0.1 fglrx-experimental-13 : 2:13.300-0ubuntu0.0.1 Only fglrx - 2:13.101-0ubuntu0.0.1 still affected, therefore I will mark this bug as fix-released. For those who is affected, please try fglrx-updates / fglrx-experimental-13 Thanks! ** Changed in: fglrx-installer (Ubuntu) Status: New => Fix Released ** Summary changed: - [HP Pavilion 23 AIO] [Brightness] could not control brightness on 12.04.3 + [HP Pavilion 23 AIO] [Brightness] could not control brightness on 12.04.3 with fglrx-updates (2:12.104-0ubuntu0.0.1) ** Summary changed: - [HP Pavilion 23 AIO] [Brightness] could not control brightness on 12.04.3 with fglrx-updates (2:12.104-0ubuntu0.0.1) + [HP Pavilion 23 AIO] AMD [1002:9991] could not control brightness on 12.04.3 with fglrx-updates (2:12.104-0ubuntu0.0.1) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to fglrx-installer in Ubuntu. https://bugs.launchpad.net/bugs/1249892 Title: [HP Pavilion 23 AIO] AMD [1002:9991] could not control brightness on 12.04.3 with fglrx-updates (2:12.104-0ubuntu0.0.1) Status in “fglrx-installer” package in Ubuntu: Fix Released Bug description: HP Pavilion 23 AIO (CID 201206-11396) ubuntu 12.04.3 with fglrx proprietary driver steps to reproduce: 1. install 12.04.3 on the machine 2. use the "System Settings" icon to launch the "Brightness and Lock" control 3. adjust the brightness bar, make sure the brightness could be controlled well. 4. use jocky to install fglrx(post update release) (you may use terminal command "jockey-gtk") 5. adjust the brightness bar as step 3 Expect result: the brightness could be controlled Actual result: the brightness did not change ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: fglrx (not installed) ProcVersionSignature: Ubuntu 3.8.0-29.42~precise1-generic 3.8.13.5 Uname: Linux 3.8.0-29-generic x86_64 NonfreeKernelModules: fglrx .tmp.unity.support.test.0: ApportVersion: 2.0.1-0ubuntu17.4 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] CompositorRunning: compiz Date: Sun Nov 10 22:22:49 2013 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu DkmsStatus: fglrx-updates, 12.104, 3.8.0-29-generic, x86_64: installed fwts-efi-runtime-dkms, 13.09.01, 3.8.0-29-generic, x86_64: installed GraphicsCard: Advanced Micro Devices [AMD] nee ATI Device [1002:9991] (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Device [103c:2aee] InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1) JockeyStatus: kmod:wl - Broadcom STA wireless driver (Proprietary, Disabled, Not in use) [auto-install] xorg:fglrx_experimental_13 - ATI/AMD proprietary FGLRX graphics driver (**experimental** beta) (Proprietary, Disabled, Not in use) xorg:fglrx_updates - ATI/AMD proprietary FGLRX graphics driver (post-release updates) (Proprietary, Enabled, Not in use) MachineType: Hewlett-Packard a654 MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-29-generic root=UUID=0cf55817-bcfd-4783-9430-c86904ecc1e7 ro quiet splash initcall_debug vt.handoff=7 SourcePackage: fglrx-installer UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/24/2012 dmi.bios.vendor: AMI dmi.bios.version: 8.08 dmi.board.name: 2AEE dmi.board.vendor: PEGATRON CORPORATION dmi.board.version: 1.03 dmi.chassis.type: 3 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnAMI:bvr8.08:bd08/24/2012:svnHewlett-Packard:pna654:pvr:rvnPEGATRONCORPORATION:rn2AEE:rvr1.03:cvnHewlett-Packard:ct3:cvr: dmi.product.name: a654 dmi.sys.vendor: Hewlett-Packard version.compiz: compiz 1:0.9.7.12-0ubuntu2 version.fglrx-installer: fglrx-installer N/A version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.43-0ubuntu0.0.2 version.libgl1-mesa-dri: libgl1-mesa-dri N/A version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/1249892/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp