我正在尝试创建一个在睡觉前运行的脚本。有人可以告诉我我在这里做错了什么吗？当我在终端中运行命令时，此脚本可以完美运行。
king@death-star /etc/pm/sleep.d $ ls
total 1MB
drwxr-xr-x 2 root root 1MB May 30 15:21 .
drwxr-xr-x 5 root root 1MB Nov 28 2015 ..
-rwxr-xr-x 1 root root 1MB Jun 26 2015 10_grub-common
-rwxr-xr-x 1 root root 1MB Dec 6 2013 10_unattended-upgrades-hibernate
-rwxr-xr-x 1 root root 1MB May 22 2012 novatel_3g_suspend
-rwxr-xr-x 1 root root 1MB May 30 15:20 revert_kb_on_sleep
king@death-star /etc/pm/sleep.d $ cat revert_kb_on_sleep
sh -c "/home/king/Desktop/Scripts/rotate_desktop normal; /home/king/Desktop/Scripts/misc/my_keyboard on"
日志输出：
$ cat /var/log/pm-suspend.log
Running hook /etc/pm/sleep.d/revert_kb_on_sleep suspend suspend:
Can't open display
Can't open display
xrandr: --rotate requires an argument
Try 'xrandr --help' for more information.
No protocol specified
Unable to connect to X server
/etc/pm/sleep.d/revert_kb_on_sleep suspend suspend: success.
Mon May 30 15:23:39 EDT 2016: performing suspend
Mon May 30 15:27:59 EDT 2016: Awake.
Mon May 30 15:27:59 EDT 2016: Running hooks for resume
Running hook /etc/pm/sleep.d/revert_kb_on_sleep resume suspend:
Can't open display
Can't open display
xrandr: --rotate requires an argument
Try 'xrandr --help' for more information.
No protocol specified
Unable to connect to X server
/etc/pm/sleep.d/revert_kb_on_sleep resume suspend: Returned exit code 1.
这运气好吗？我编写了一个脚本在醒来后运行，但我遇到了类似的错误。此脚本应在从睡眠状态醒来时关闭笔记本电脑显示屏。
case "${1}" in
resume|thaw)
screen_status=$(xset -q -display :0.0 | tail -1 | sed 's/^[ t]*//g')
if [[ "$screen_status" = "Monitor is On" ]]; then
sleep 1 && xset -display :0.0 dpms force off
fi
;;
esac
但是我收到以下错误：
No protocol specified
xset: unable to open display ":0.0"
我试图让它在无法显示时screen_status设置为"显示器关闭"，以便它无论如何都会触发执行 xset 的条件，但这也不起作用，因为它无法访问显示器。同时，我将 xfce4-power-manager 设置为在 1 分钟后关闭屏幕。不得不等待一分钟总比没有好！