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Thread: Resume from hibernate fails sometimes

  1. #1
    Join Date
    May 2011
    Location
    Nürnberg, Germany
    Posts
    26

    Default Resume from hibernate fails sometimes

    Hello all,
    on my machine (ThinkPad E545), hibernate & resume sometimes works perfectly, but sometimes (i.e., more often) it fails with a "signature verifying" error.

    After removing "splash=silent quiet" from the grub kernel parameters, I can see some messages from PM during resume (BTW: Is there a logfile where I could find these messages later on, too?):

    Image loading seems to work, there are messages saying:
    PM: Image loading progress: 0%
    .
    .
    .
    PM: Image loading progress: 100%

    But then:
    PM: Signature verifying failed: -19
    PM: Bypass verification on non-EFI machine

    And then, the machine is just dead. I can only switch it off the hard way.

    Any ideas? If you need more information, just let me know.

  2. #2
    Join Date
    Feb 2016
    Location
    Berlin
    Posts
    357

    Default Re: Resume from hibernate fails sometimes

    perhaps someone else can diagnose your problem more specifically, but i had the same random failures on resume. Investigations suggested this is a general linux problem going back many years. I now only use suspend to RAM which works extremely well (negligible battery drain).

  3. #3
    Join Date
    May 2011
    Location
    Nürnberg, Germany
    Posts
    26

    Default Re: Resume from hibernate fails sometimes

    Yes, hibernate has always been kind of a game of chance. And yes, suspend to RAM doesn't make problems.
    But it worked fine for me with Leap 42.1, so -- in theory -- it should work with 42.2, too.

    I'd be happy for any hint that could help me to at least understand the problem.

    What exactly do these messages tell me? Is "-19" an error code? Does it mean something?
    How and where is the hibernate/resume process configured? Can I produce a more detailed debug output? Logfiles?
    What has changed regarding hibernate/resume between 42.1 and 42.2?
    Anything I could start with?

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