ubuntu12.04不能保存亮度的解决

修改/etc/rc.local，在exit 0之前添加一行：

echo 16 /sys/class/backlight/acpi_video0/brightness

 

16代表亮度参数，可以根据自己需要修改,

 

---------针对小白--------

ctrl+alt+t   打开命令终端

输入：sudo gedit /etc/rc.local      (然后输入密码)

将一下代码粘贴到 exit 0 之前，OK

echo 6 > /sys/class/backlight/acpi_video0/brightness

# 效果如下：
#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.
echo 6 > /sys/class/backlight/acpi_video0/brightness
exit 0