下载源码包 uswsusp:
uswsusp (also known as µswsusp or simply suspend) contains the programs to use the userspace software suspend facility available in Linux kernel 2.6.17-rc1 and higher. It enables you to save the state of the whole system to disk and power off your system. After restarting your system it will be put back in the exact system state you left it (this is sometimes called hibernation).
It also includes a program to suspend-to-ram after the state is saved to disk. In the suspend-to-ram state the system still uses power, but is faster in resuming. In case the battery depletes the state is still on disk and resume can continue without data loss.
To use this package you need a Linux kernel version 2.6.17-rc1 or newer configured to use an initramfs. Hooks and scripts to integrate with initramfs-tools are provided.
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