ubuntu 14.10怎么保存屏幕亮度

[KOSKERS]

koskers@koskers-W35xSTQ-370ST:~$ cat /etc/rc.local

#!/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.
sudo echo 490 > /sys/class/backlight/intel_backlight/actual_brightness;
exit 0


加不加sudo貌似都不行。

[poloshiao]

sudo echo 490 > /sys/class/backlight/intel_backlight/actual_brightness;

試試
echo 490 > /sys/class/backlight/intel_backlight/brightness
可以不加 sudo
因為 執行 /etc/rc.local 時
非 root 使用者 還沒登入

[KakuroP]

后来我直接chmod 777 /sys/class/backlight/intel_backlight/actual_brightness，把权限给所有用户，一切正常了！

[striving106]

UBUNTU KYLIN15.04版已能自动保存屏幕亮度，不需作任何修改。