[Bug 604559] [NEW] hibernation is unreliable

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I have Ubuntu 10.04 installed.

When I hibernate (whether manually or automatically because of
critically low battery), any of these three things can happen:

A) it hibernates succesfully, and then resumes succesfully at the next boot
B) It appears to hibernate succesfully, but then when you boot, it silently fails to resume, and it just boots as if it had been shut down. You loose your session and all your unsaved data.
C) It gets stuck _before_ it completes hibernation. It gets stuck at an empty black screen with a text cursor blinking at the upper-left corner, and stays there forever. You have to shut it down by holding the power button. Obviously it will fail to resume at the next boot.

This can cause data loss and should be considered critical.
May be related to #50437 but i can't tell. I didn't touch anything related to partitions.
I think there's more than one bug here. The resulting issue is that you just can't trust hibernation.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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hibernation is unreliable
https://bugs.launchpad.net/bugs/604559
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