Hello, i have the same problem with the same hardware (Asus G75VX, Nvidia GTX 670 MX) and found no solution!
My system is a Ubuntu 14.04 with the following nvidia driver Version: 331.38-0ubuntu7 ** Attachment added: "dmesg.log" https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-319/+bug/1263498/+attachment/4115739/+files/dmesg.log -- 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/1263498 Title: Asus G75VX, can not modify brightness Status in “nvidia-graphics-drivers-319” package in Ubuntu: Confirmed Bug description: 1. Ubuntu 13.10 2. N: Unable to locate package nvidia-graphics-drivers-319 3. I expected that when I changed the brightness level for my laptop monitor that the brightness would also change. 4. Instead, the brightness always stays at 100% I have tried every configuration of grub that I have seen online or been asked to try on freenode.net #ubuntu by 3 different people. Nothing seems to fix this problem. The file for the brightness is always updated but it is like the driver never tells the hardware to change the brightness. I have tried Tried : acpi_backlight=vendor pcie_aspm=force acpi_osi='!Windows 2012' Option "RegistryDwords" "EnableBrightnessControl=1" echo 50 > /sys/class/backlight/acpi_video0/brightness echo 50 > /sys/class/backlight/acpi_video1/brightness echo 50 > /sys/class/backlight/asus/brightness nothing seems to work (the files are of course updated but the monitor rests at 100% brightness) I have also tried the XOrg-server and nvidia-304 drivers. They all have the same result, nothing. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: nvidia-319 319.32-0ubuntu7 ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7 Uname: Linux 3.11.0-14-generic x86_64 NonfreeKernelModules: wl nvidia ApportVersion: 2.12.5-0ubuntu2.2 Architecture: amd64 Date: Sun Dec 22 16:16:35 2013 InstallationDate: Installed on 2013-10-27 (55 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MarkForUpload: True SourcePackage: nvidia-graphics-drivers-319 UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.modprobe.d.nvidia.319.hybrid.conf: [deleted] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-319/+bug/1263498/+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
