Sleep in linux

Linux sleep-general Linux technology-Linux technology and application information. For more information, see the following section. The sleep configuration process is described as follows:
Enable Hibernation in the kernel and set Default resume partition to your swap partition. (You can also set the parameters in grub)
Add resume =/dev/swappartition to the kernel parameters in grub (your swap partition)
# Emerge hibernate-script-av
# Rc-update add hibernate-cleanup boot
Comment out nvidia in/etc/hibernate/blacklisted-modules.
To restart the service, add this sentence to/etc/hibernate/common. conf.
RestartServices ntp-client net. eth2 net. ppp0
(Ppp0 is okay here, but it is useless to restart eth2. You can leave a message if you have an expert .)
Simple to use.
Hibernate
Use hibernate-ram for standby
You can also use gnome-power-manager.
# Emerge gnome-power-manager-av
But I don't know why, one machine can, and one machine can't.
The error is as follows:
$ Gnome-power-cmd.sh hibernate
Hibernating
Error org. freedesktop. Rule. GLib. UnmappedError. GpmControlError. Code0: messages are not sent according to the authorization security rules.