For those who still affected by this bug, please note that discussion in a Invalid bug tend to be IGNORED.
This bug was set to "Invalid" due to this version of Ubuntu is no longer supported. To this point we're unable to know if it's fixed in between and broken again, or it's just not working from the beginning. Also, this kind of bug needs log file for investigation, it's unreliable to use such an old bug for it, not mention log files from a third person (as the configuration could be different) Please OPEN A NEW BUG [1] if your system still affected by this, you can do it with `ubuntu-bug linux` command in a terminal (Ctrl + Alt + t) [1] https://help.ubuntu.com/community/ReportingBugs -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/562005 Title: Backlight controls of laptops with NVIDIA NVS and Quadro FX 880M GPUs no longer function while using proprietary drivers Status in Ubuntu-Certification: Invalid Status in nvidia-graphics-drivers package in Ubuntu: Invalid Bug description: The brightness controls of laptops with NVIDIA NVS 3100M or Quadro FX 880M GPUs work while running Nouveau or when using a text mode VT, but not while running X and using proprietary NVIDIA drivers. It is possible to force the NVIDIA driver to control the backlight by adding [Option "RegistryDwords" "EnableBrightnessControl=1"] to the "Devices" section of xorg.conf . While this allows the backlight to be controlled, the increments are inconsistent and often result in a buzzing noise from the LED backlight on Lenovo ThinkPad T510s and W510s. Since this did not occur while running nouveau or when switching in text VT, something is wrong. This bad backlight behaviour has been confirmed on ThinkPad models T510 and W510 with NVIDIA NVS 3100m and Quadro FX 880M chipsets, respectively, via http://www.thinkwiki.org/wiki/Category:T510 Because this issue is related to NVIDIA's proprietary video driver, this issue can only be solved by them. An NVIDIA developer has said he will investigate the issues, which are discussed on the nvnews.net forums at http://www.nvnews.net/vbulletin/showthread.php?t=145105 and http://www.nvnews.net/vbulletin/showthread.php?t=150069 . For future reference, the latest NVIDIA drivers can be found in the Ubuntu X-Swat X updates PPA: https://launchpad.net/~ubuntu-x-swat/+archive/x-updates ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: nvidia-current 195.36.15-0ubuntu2 ProcVersionSignature: Ubuntu 2.6.32-19.28-generic 2.6.32.10+drm33.1 Uname: Linux 2.6.32-19-generic x86_64 NonfreeKernelModules: nvidia Architecture: amd64 Date: Mon Apr 12 23:48:02 2010 DkmsStatus: nvidia-current, 195.36.15, 2.6.32-19-generic, x86_64: installed EcryptfsInUse: Yes GdmLog1: MachineType: LENOVO 4313CTO ProcCmdLine: BOOT_IMAGE=/bhostnamet/vmlinuz-2.6.32-19-generic rhostnamet=UUID=0b95b314-337f-49aa-86f9-6423e76e9f20 ro ProcEnviron: LANG=en_CA.utf8 SHELL=/bin/bash SourcePackage: nvidia-graphics-drivers XorgLogOld: dmi.bios.date: 02/22/2010 dmi.bios.vendor: LENOVO dmi.bios.version: 6MET49WW (1 tp-smapi, 0.40, 2.6.32-19-generic, x86_64: installed vboxnetadp, 3.1.6, 2.6.32-19-generic, x86_64: installed vboxnetflt, 3.1.6, 2.6.32-19-generic, x86_64: installed vboxdrv, 3.1.6, 2.6.32-19-generic, x86_64: installed.12 ) dmi.board.name: 4313CTO dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr6MET49WW(1.12):bd02/22/2010:svnLENOVO:pn4313CTO:pvrThinkPadT510:rvnLENOVO:rn4313CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4313CTO dmi.product.version: ThinkPad T510 dmi.sys.vendor: LENOVO system: distro: Ubuntu codename: lucid architecture: x86_64 kernel: 2.6.32-19-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-certification/+bug/562005/+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
