TuxOnIce

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General

Software Suspend 2, also called "swsusp2" and "suspend2", is an implementation of suspend-to-disk functionality in the form of a Linux kernel patch and several userspace utilities. It is an alternative to both the BIOS-driven hibernation feature found on most ThinkPad models, and the "software suspend" functionality built into recent Linux kernels.

Compared to the alternatives, Software Suspend 2 has some unique features:

  • The ability to compress the memory image as it is written to disk, thereby reducing suspend and resume times.
  • Saving the memory image to a file on a normal filesystem, instead of a dedicated partition.
  • Cancelling a suspend in progress
  • Graphical UI (optional)
  • Improved reliability under some circumstances

Since it is implemented purely in software, Software Suspend 2 is in principle machine-independent and should work on all modern ThinkPad models. However, in some cases problematic driver need to be unloaded before suspension.

Model-specific Status

Installation Instructions

The project home page has a detailed HOWTO and FAQ.

External links

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