Public bug reported: With original installation of Jaunty using open source driver, the Fn +up-arrow, Fn+down-arrow keys can be used to adjust brightness of the screen. The notification system shows the brightness level change and the actual brightness of the laptop changes properly as well.
But after activating the nvidia proprietary driver, with the Fn+up- arrow, Fn+down-arrow keys the notification system shows brightness change, but the real brightness of the screen is not changed, it always remains at 100%. The file "/proc/acpi/video/VGA/LCD/brightness" seems to get updated with Fn+up-arrow, Fn+down-arrow keys. Running the script from, http://www.thouret.co.uk/blog/2008/12/shell-script-for-linux-nvidia-kernel-module-laptop-brightness-workaround/ seem to work. It is able to change real brightness of screen with this script to any value. ProblemType: Bug Architecture: i386 DistroRelease: Ubuntu 9.04 HibernationDevice: RESUME=UUID=67853012-a272-4900-ad4e-c42f1a3c78ac MachineType: LENOVO IdeaPad Y450 NonfreeKernelModules: nvidia Package: linux-image-2.6.28-13-generic 2.6.28-13.44 ProcCmdLine: root=UUID=51b80346-f2a4-4605-9152-30ca36254cd4 ro quiet splash ProcEnviron: LANG=en_SG.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.28-13.44-generic SourcePackage: linux ** Affects: ubuntu Importance: Undecided Status: New ** Tags: apport-bug i386 -- jaunty, not able to change lcd brightness for lenovo ideapad Y450 laptop with nvidia driver https://bugs.launchpad.net/bugs/394346 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
