No; X.org doesn't manage these (not directly anyway). Assuming the kernel / system is registering it properly, that indicates the kernel drivers are doing their thing properly, so gnome-power-manager is typically the next thing to look at.
** Package changed: xorg (Ubuntu) => gnome-power-manager (Ubuntu) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-power-manager in Ubuntu. https://bugs.launchpad.net/bugs/976083 Title: Screen brightness settings Status in “gnome-power-manager” package in Ubuntu: New Bug description: The screen brightness-change hotkeys on my laptop's keyboard don't work properly on Ubuntu. Although the system registers input from these hotkeys, and the brightness scale changes, this had no effect whatsoever on my screen's brightness. I suspect it could be a graphics driver incompatibility problem. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xorg 1:7.6+12ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14 Uname: Linux 3.2.0-22-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.0-0ubuntu4 Architecture: amd64 CompizPlugins: [core,bailer,detection,composite,opengl,decor,snap,imgpng,compiztoolbox,unitymtgrabhandles,grid,place,vpswitch,mousepoll,session,resize,regex,move,gnomecompat,wall,animation,expo,workarounds,fade,ezoom,scale,unityshell] CompositorRunning: compiz Date: Sat Apr 7 18:12:14 2012 DistUpgraded: 2012-04-07 15:53:30,718 DEBUG enabling apt cron job DistroCodename: precise DistroVariant: ubuntu EcryptfsInUse: Yes ExtraDebuggingInterest: Yes, if not too technical InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) MachineType: SAMSUNG ELECTRONICS CO., LTD. RV410/RV510/S3510/E3510 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-22-generic root=UUID=dd5fd77e-e065-4d8f-9fd7-39a3d1258708 ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to precise on 2012-04-07 (0 days ago) dmi.bios.date: 09/16/2010 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: 02UC.P026.20100916.LX dmi.board.name: RV410/RV510/S3510/E3510 dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr02UC.P026.20100916.LX:bd09/16/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnRV410/RV510/S3510/E3510:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnRV410/RV510/S3510/E3510:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A: dmi.product.name: RV410/RV510/S3510/E3510 dmi.product.version: Not Applicable dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. version.compiz: compiz 1:0.9.7.4-0ubuntu3 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.32-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/976083/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
