3 ms·

> On a laptop to hibernate, which results in zero power consumption vs suspend which will drain the battery in a day or so Swap is not strictly needed for this

• Spivak 10y ago
  You still need swap, just not a swap partition. I suppose we can debate if there's a meaningful difference between the two.
  • 77pt77 10y ago
    I could swear there was a way around that but I don't remember the details and can't find them. Still, it's possible to hibernate without having the drawbacks people have been complaining about in this thread.
  • rogerbinns 10y ago
    I have an encrypted swap partition. Hibernation works well with that. I don't believe it is possible with a swap file since the containing filesystem would also be mounted by the hibernation image.
    • 77pt77 10y ago
      > I don't believe it is possible with a swap file since the containing filesystem would also be mounted by the hibernation image. for sure it is. Even for swap files inside an encrypted volume. https://vadim-kirilchuk-linux.blogspot.com/2013/05/swap-file-for-hibernation.html https://vadim-kirilchuk-linux.blogspot.com/2013/05/swap-file... The crux is knowing the swap-file offset and passing that argument as resume_offset on boot. Have a look. It's totally doable and you won't need to have an actual partition.
      • rogerbinns 10y ago
        I never realised the swap header on files also provides enough information to locate the other blocks without going through the filesystem. Logical I guess. This is however more work that "works out of the box" swap partitions.