hibernation is unreliable

[Teo]

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.

[Jeremy Foshee (jeremyfoshee)]

Hi matteo,

Please be sure to confirm this issue exists with the latest development release of Ubuntu. ISO CD images are available from http://cdimage.ubuntu.com/daily/current/ . If the issue remains, please run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 604559

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Teo (teo1978)]

Hi,
I'm sorry I cannot provide all that information.

I am not a developer, I can't play around with the system with the risk of messing it up. I am just a user.

Is there a way I can upgrade to the development release you're talking about without reinstalling ubuntu from scratch???

And I don't know what an "upstream" kernel is.

I can only say that it happens almost EVERY TIME the system hibernatres automatically when the level of the battery is critically low.
Today it CRASHED while hibernating: I got a black screen with a lot of error messages (the word "stack" appeared) and it got stuck without powering off. When I rebooted it booted cleanly and obviously I lost all my unsaved data.

When I hibernate it manually, most of the times all works fine; but not always: sometimes it does fail.

I also notice that this bug is marked for expiration if no further activity occurs. Well it happens i cannot provide further information and tests, but I don't think it is a reason for closing the bug unless you are SURE it is fixed (in which case I'd like to know how to get the update that fixes it).

This is a very CRITICAL bug that can cause disastrous data destruction.

[Teo (teo1978)]

Once again:
- battery critically low
- it automatically started hibernating. No error messages nor sign of failure whatsoever except that:
- just before the power turned off automatically, the prompt for user password appeared, the same as when you suspend and resume, but i thought that may be normal
- then it powered off automatically.
- then when I powered it on again, it booted freshly as if it had never been hibernated. No error message.

URGENT: Is there any log I can look at so that I can post some useful information?

[Teo (teo1978)]

I think this is a duplicate of #577916

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[penalvch (penalvch)]

matteo sisti sette, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily kernel folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.12-rc2

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]