Hello, I'm running Mint 17.1 Rebecca (based on Ubuntu 14.04), and experiencing the same brightness problem.
I think I have a workaround; not very "elegant" but does the job. Install the brightness applet (I'm using the one available in MATE). When you use it to change the brightness, surprise, it doesn't work. However, if I close the laptop's lid, let it sleep, then open the lid again, the brightness seems to get adjusted to the last brightness settings I set before closing the lid. I know, not very elegant, but seems to do the job. BTW, my laptop is a Lenovo W520. Using "discrete graphics" option in BIOS. Output of "lspci | grep -i vga": 01:00.0 VGA compatible controller: NVIDIA Corporation GF108GLM [Quadro 1000M] (rev a1) HIH, Sergio -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-graphics-drivers-319 in Ubuntu. https://bugs.launchpad.net/bugs/1241745 Title: 10de:0dfa [HP EliteBook 8560w] Changing the screen brightness does not work anymore in 319.xx Status in Nvidia Feature Request and Bug Reporting: New Status in nvidia-graphics-drivers-319 package in Ubuntu: Triaged Bug description: Changing the screen brightness always used to work on my HP Elitebook 8560w -- both with the function keys and in the dialog "Brightness & Lock" in the system settings. The environment light sensor also used to work IIRC. Since the update to 13.10, this stopped working. Methods I have tried that didn't work for adapting the brightness are: * Adding GRUB_CMDLINE_LINUX="acpi_backlight=vendor" to /etc/default/grub * Adding GRUB_CMDLINE_LINUX=”acpi_osi="!Windows 2012" to /etc/default/grub Currently I am changing the brightness manually using xrandr --output LVDS-0 --brightness 0.9. However, AFAIK this does not really change the brightness, but only changes the contrast. WORKAROUND: Use nvidia-graphics-drivers-304. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: xorg 1:7.7+1ubuntu6 ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3 Uname: Linux 3.11.0-12-generic x86_64 NonfreeKernelModules: nvidia .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0' .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 319.60 Wed Sep 25 14:28:26 PDT 2013 GCC version: gcc version 4.8.1 (Ubuntu/Linaro 4.8.1-10ubuntu8) .tmp.unity.support.test.0: ApportVersion: 2.12.5-0ubuntu2 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true Date: Fri Oct 18 19:50:36 2013 DistUpgraded: 2013-10-17 17:20:47,580 DEBUG enabling apt cron job DistroCodename: saucy DistroVariant: ubuntu DkmsStatus: nvidia-319-updates, 319.60, 3.11.0-12-generic, x86_64: installed nvidia-319-updates, 319.60, 3.8.0-31-generic, x86_64: installed ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: NVIDIA Corporation GF108GLM [Quadro 1000M] [10de:0dfa] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Device [103c:1631] InstallationDate: Installed on 2013-01-06 (285 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) JockeyStatus: kmod:nvidia_319_updates - nvidia_319_updates (Proprietary, Enabled, Not in use) kmod:nvidia_304 - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use) kmod:nvidia_304_updates - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use) kmod:nvidia_319 - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use) MachineType: Hewlett-Packard HP EliteBook 8560w MarkForUpload: True ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-12-generic root=UUID=53f83a14-cacc-48fd-bb4b-354d69eb7f0e ro quiet splash "acpi_osi=!Windows 2012" SourcePackage: xorg UpgradeStatus: Upgraded to saucy on 2013-10-17 (1 days ago) dmi.bios.date: 06/11/2012 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 68SVD Ver. F.27 dmi.board.name: 1631 dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 01.3B dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr68SVDVer.F.27:bd06/11/2012:svnHewlett-Packard:pnHPEliteBook8560w:pvrA0001D02:rvnHewlett-Packard:rn1631:rvrKBCVersion01.3B:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP EliteBook 8560w dmi.product.version: A0001D02 dmi.sys.vendor: Hewlett-Packard version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.46-1 version.libgl1-mesa-dri: libgl1-mesa-dri 9.2.1-1ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 9.2.1-1ubuntu3 version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A version.xserver-xorg-core: xserver-xorg-core 2:1.14.3-3ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.904-0ubuntu2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1 xserver.bootTime: Fri Oct 18 19:39:07 2013 xserver.configfile: default xserver.errors: Failed to load /usr/lib/xorg/modules/libglamoregl.so: /usr/lib/xorg/modules/libglamoregl.so: undefined symbol: _glapi_tls_Context Failed to load module "glamoregl" (loader failed, 7) open /dev/fb0: No such file or directory xserver.logfile: /var/log/Xorg.0.log xserver.outputs: xserver.version: 2:1.14.3-3ubuntu2 To manage notifications about this bug go to: https://bugs.launchpad.net/nvidia/+bug/1241745/+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
