Ubuntu 14.04 LTS Installation NVIDIA graphics driver screen brightness adjustment problem

Install Ubuntu, for NVIDIA graphics cards, third-party open source drivers are used by default, and third-party open-source drivers and system compatibility are generally better. Because NVIDIA graphics drivers are not open, native support for Linux systems is almost too small to introduce minor problems. Therefore, in general, if not particularly necessary, the use of third-party open source drivers is a good choice.

However, if you want to do CUDA-related development, you must use the official NVIDIA driver.

1. Install.

Do not install manually. The available graphics driver options should be found under Additional Drivers for Software & Updates. For example, if you choose to use the latest 340.98 driver, then Apply changes, the system will download the installation driver automatically. After installation, reboot the system.

2. Problems encountered.

After rebooting the system, the screen brightness adjustment Fn + light/Dark key is invalid. The workaround is as follows,

-Change the video card profile, create a new profile 10-nvidia.conf under Directory/USR/SHARE/X11/XORG.CONF.D, and add the following

1Section"Device"2Identifier"Device0"3Driver"nvidia"4VendorName"NVIDIA Corporation"5Option"Registrydwords" "enablebrightnesscontrol=1"6Option"nologo" "True"7Endsection

-Change Grub boot parameters, open the grub file under/etc/default, modify the following,

Will

grub_cmdline_linux=""

Switch

grub_cmdline_linux="acpi_backlight=vendor"

Update the GRUB boot menu,

# Update-grub

Restart to resolve the brightness adjustment problem.

Finish.

Ubuntu 14.04 LTS Installation NVIDIA graphics driver screen brightness adjustment problem