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SDB:Suspend to RAM

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Putting the system to sleep - with systemd there is an easy high-level access to suspend functions of the system

Tested on openSUSE

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Background

Suspend to RAM is working on many systems. It saves the system-state to RAM and puts system components in energy-saving states. The RAM will still be powered on. After waking up the system resumes operation.

There are machines that will not resume when using a framebuffer console. Some Dell and HP models for example fall into this category.
You can disable the framebuffer in your bootloader configuration by passing "vga=0" to the kernel. The configuration for grub is often found in /etc/default/grub.
If your machine only works without framebuffer, please tell us about this in your report.

Usage

systemctl suspend # suspend to ram with systemd
systemctl hibernate # suspend to disk with systemd

See also