[Bug 1012726] Re: Hibernating causes data loss

[Steve Langasek]

Your /etc/crypttab shows that you have random crypted swap configured.
It is impossible to resume from hibernate from a random-encrypted swap
device because, by definition, the key is not stored anywhere that it
can be used for resuming from a cold boot.  This is one of many reasons
why hibernate is disabled on Ubuntu by default.  If Kubuntu is giving
you the option to hibernate, that's a bug in the Kubuntu GUI.

If you want to be able to hibernate, you will need to reconfigure your
encrypted swap to use a fixed key instead of a random one.  This will
require you to enter a passphrase at boot (and at resume from
hibernate).  Use of unencrypted swap with encrypted home directories is
strongly discouraged as insecure.

** Package changed: cryptsetup (Ubuntu) => kubuntu-meta (Ubuntu)

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https://bugs.launchpad.net/bugs/1012726

Title:
  Hibernating causes data loss

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