沈雅

1.首先修改/etc/default/grub文件。

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=linux acpi_backlight=sony nomodeset video=uvesafb:mode_option=1360x768-24,mtrr=3,scroll=ywrap"

GRUB_CMDLINE_LINUX="acpi_backlight=sony"

2.更新grub配置缓存

sudo update-grub

3.修改配置文件/etc/X11/xorg.conf

Section "Device"

    Identifier     "Device0"

    Driver         "nvidia"

    VendorName     "NVIDIA Corporation"

    Option "NoLogo" "True"

    Option "Backlight" "acpi_video0"

    Option "RegistryDwords" " EnableBrightnessControl=1"

EndSection

4.修改配置文件/etc/rc.local

echo 15 > /sys/class/backlight/acpi_video0/brightness