问题描述
我最近在Mac Book Pro 7,1上安装了Ubuntu 11.10。我安装了NVIDIA驱动程序(285)。亮度键在起作用(F1和F2)，我看到显示亮度的框，但它什么也没做。我可以在NVIDIA X Server设置应用程序中更改亮度。在不卸载驱动程序的情况下如何获得亮度？提前致谢。
最佳思路
我能够在Ubuntu 12.04上的Lenovo W530上使用亮度键。
如今，X会自动进行自我配置，因此创建xorg.conf文件可能会使您的系统不灵活。相反，您可以在/usr/share/X11/xorg.conf.d/中的文件中添加一个部分，X会将该部分包含在它自动生成的配置中。
因此，要使屏幕亮度键与Nvidia图形卡一起使用，请在xorg.conf.d目录中创建一个文件，例如：
sudo gedit /usr/share/X11/xorg.conf.d/10-nvidia-brightness.conf
将以下内容粘贴到文件中：
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "Quadro K1000M"
Option "RegistryDwords" "EnableBrightnessControl=1"
EndSection
注销并重新登录，或重新启动，您的亮度键现在应该可以工作了！
(我从here转发了此帖)
次佳思路
我的笔记本电脑出现类似问题，您需要将其添加到/etc/X11/xorg.conf
-
运行命令：
sudo nano /etc/X11/xorg.conf -
找到第”Device”节，并添加以下内容
Option "RegistryDwords" "EnableBrightnessControl=1"
第三种思路
您需要启用亮度控制。打开终端，键入sudo gedit /etc/x11/xorg.conf，然后在设备部分中添加Option "RegistryDwords" "EnableBrightnessControl=1"，将其粘贴到新行中。然后重新启动计算机，一切都会正常。
第四种思路
感谢您提供出色的脚本qgj。令人遗憾的是，该错误仍然存在，需要使用work-around。由于选项对于我的特定显示类型在nvidia-settings中不再有效，因此我遇到了与James出错相同的问题。幸运的是，背光亮度有一个更好的设置。我已经修改了bash脚本以改为使用此设置。
#!/bin/bash
# This script was originally created by 'qgj' from askubuntu. It has been modified
# to work using the BacklightBrighness setting available for some displays on the currrent nvidia driver
# It has also been modified to remove display specific configuration, instead applying the setting to all
# active displays which support the BacklightBrightness setting.
# Tested only with nvidia-settings-319.12 and nvidia-drivers-331.20 on Linux Mint 17 Mate
#
# Requirements:
# - NVIDIA Drivers (e.g. nvidia-current in Ubuntu)
# - NVIDIA Settings (nvidia-settings in Ubuntu)
#
# This script can be used to change the brightness on systems with an NVIDIA graphics card
# that lack the support for changing the brightness (probably needing acpi backlight).
# It uses "nvidia-settings -a" to assign new gamma or brightness values to the display.
#
# If this script fails, your display likely does not support the 'BacklightBrightness' option.
# In that event, execute 'nvidia-settings -n -q all' to see which options are available for the displays
#
# "nvidia-brightness.sh" may be run from the command line or can be assigned to the brightness keys on your Keyboard
# Type "nvidia-brightness.sh --help" for valid options.
if [ -z "${BASH}" ] ; then
echo "please run this script with the BASH shell"
exit 1
fi
usage ()
{
cat << ENDMSG
Usage:
nvidia-brightness.sh [ options ]
Options:
[ -bu ] or [ --brightness-up ] increase brightness by 10
[ -bu <no> ] or
[ --brightness-up <no> ] increase brightness by specified <no>
[ -bd ] or [ --brightness-down ] decrease brightness by 10
[ -bd <no> ] or
[ --brightness-down <no> ] decrease brightness by specified <no>
[ -i ] or [ --initialize ] Must be run once to create the settings file
(~/.nvidia-brightness.cfg).
Brightness settings from ~/.nvidia-settings-rc
will be used if file exists, otherwise
brightness will be set to 100.
[ -l ] or [ --load-config ] Load current settings from ~/.nvidia-brightness.cfg
(e.g. as X11 autostart script)
Examples:
nvidia-brightness -bd this will decrease gamma by 10
nvidia-brightness -bu 15 this will increase brightness by 15
ENDMSG
}
case $1 in
-h|--help)
usage
exit 0
esac
if [ "$1" != "-i" -a "$1" != "--initialize" ] ; then
if [[ ! -f ~/.nvidia-brightness.cfg ]]; then
echo 'You must run this script with the --initialize option once to create the settings file.'
echo 'Type "nvidia-brightness.sh --help" for more information.';
exit 1
fi
fi
#### INITIALIZE ####
initialize_cfg ()
{
BRIGHTNESS_TEMP=100
echo "BRIGHTNESS=$BRIGHTNESS_TEMP" > ~/.nvidia-brightness.cfg
source ~/.nvidia-brightness.cfg
echo "BRIGHTNESS: $BRIGHTNESS"
# Valid BacklightBrightness values are between 0 and 100
# Example: nvidia-settings -n -a BacklightBrightness=80
nvidia-settings -n -a BacklightBrightness=$BRIGHTNESS 1>/dev/null
exit $?
}
#### LOAD CONFIGURATION ####
load_cfg ()
{
source ~/.nvidia-brightness.cfg
echo "BRIGHTNESS: $BRIGHTNESS"
nvidia-settings -n -a BacklightBrightness=$BRIGHTNESS 1>/dev/null
}
#### BRIGHTNESS CHANGE ####
brightness_up ()
{
source ~/.nvidia-brightness.cfg
[[ -z $1 ]] && BRIGHTNESS_INC=10 || BRIGHTNESS_INC=$1
BRIGHTNESSNEW=$(( $BRIGHTNESS + $BRIGHTNESS_INC ))
[[ $BRIGHTNESSNEW -gt 100 ]] && BRIGHTNESSNEW=100
sed -i s/.*BRIGHTNESS=.*/BRIGHTNESS=$BRIGHTNESSNEW/g ~/.nvidia-brightness.cfg
source ~/.nvidia-brightness.cfg
echo "BRIGHTNESS: $BRIGHTNESS"
nvidia-settings -n -a BacklightBrightness=$BRIGHTNESS 1>/dev/null
}
brightness_down ()
{
source ~/.nvidia-brightness.cfg
[[ -z $1 ]] && BRIGHTNESS_INC=10 || BRIGHTNESS_INC=$1
BRIGHTNESSNEW=$(( $BRIGHTNESS - $BRIGHTNESS_INC ))
[[ $BRIGHTNESSNEW -lt 0 ]] && BRIGHTNESSNEW=0
sed -i s/.*BRIGHTNESS=.*/BRIGHTNESS=$BRIGHTNESSNEW/g ~/.nvidia-brightness.cfg
source ~/.nvidia-brightness.cfg
echo "BRIGHTNESS: $BRIGHTNESS"
nvidia-settings -n -a BacklightBrightness=$BRIGHTNESS 1>/dev/null
}
if [[ "$3" != "" ]]; then
usage
exit 1
fi
error_mixed_brightness ()
{
echo "Error: [ --brightness-up ] and [ --brightness-down ] can't be used together."
}
if [[ "$2" != "" ]]; then
[[ ! "$2" == ?(-)+([0-9]) ]] && usage && exit 1
fi
case $1 in
-bu|--brightness-up)
[ "$2" == "-bd" ] && error_mixed_brightness && exit 1
[ "$2" == "--brightness-down" ] && error_mixed_brightness && exit 1
brightness_up $2
;;
-bd|--brightness-down)
[ "$2" == "-bu" ] && error_mixed_brightness && exit 1
[ "$2" == "--brightness-up" ] && error_mixed_brightness && exit 1
brightness_down $2
;;
-h|--help)
usage
exit 0
;;
-i|--initialize)
if [ "$2" != "" ]; then usage; exit 1; fi
initialize_cfg
exit $?
;;
-l|--load-config)
if [ "$2" != "" ]; then usage; exit 1; fi
load_cfg
exit 0
;;
*)
usage
exit 1
esac
您的里程可能因该脚本而异，因为某些显示器/适配器支持不同的选项。如果遇到问题，请阅读脚本中的帮助和注释。
希望它能对某人有所帮助！