折腾了好几天,终于在笔记本上让 Ubuntu 14实现了关机/重启前记住当前亮度值,开机后恢复.
网上找到的解决方案在我笔记本上都不完全好使,中间跳过的坑就不说了.
###1.安装 xbacklight.###
<!-- lang: shell -->
sudo apt-get install xbacklight
###2.创建开机后恢复亮度值的脚本.###
创建:
<!-- lang: shell -->
sudo vi /etc/lightdm/display-setup-script.sh
内容:
<!-- lang: shell -->
#!/bin/sh
xbacklight -set `cat /etc/lightdm/backlight.save`
保存:
<!-- lang: shell -->
:wq
添加执行权限.
<!-- lang: shell -->
sudo chmod +x /etc/lightdm/display-setup-script.sh
###3.创建关机/重启前记住当前亮度值的脚本.###
创建:
<!-- lang: shell -->
sudo vi /etc/lightdm/session-cleanup-script.sh
内容:
<!-- lang: shell -->
#!/bin/sh
cp /sys/class/backlight/acpi_video0/actual_brightness /etc/lightdm/backlight.save
保存:
<!-- lang: shell -->
:wq
添加执行权限.
<!-- lang: shell -->
sudo chmod +x /etc/lightdm/session-cleanup-script.sh
###4.创建配置文件,将两个脚本分别设为登录,退出时启动.###
创建:
<!-- lang: shell -->
sudo vi /etc/lightdm/lightdm.conf
内容:
<!-- lang: shell -->
[SeatDefaults]
display-setup-script=/etc/lightdm/display-setup-script.sh
session-cleanup-script=/etc/lightdm/session-cleanup-script.sh
保存:
<!-- lang: shell -->
:wq
