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Thread: Sost lock-up error?

  1. #1
    Join Date
    Feb 2017

    Sost lock-up error?

    I have an old Dell Dimension 4600 which was given a new lease of life three years ago with the installation of Lubuntu 16.04. It has been running 18.04 quite happily for nearly a year, but within the past couple of weeks it has failed to boot successfully on four occasions. Failures 1, 2 and 4 left me with a black screen (on failure 4 I noticed occasional coloured dots on the top line of the display before the screen went completely black). Failure 3, though, gave a cyan screen with a message whose top line was something like:
    [60.052047] watch dog: BUG: soft lock-up - CPU#0 stuck for 22s! [plymouth:369]
    (I wrote that down by hand, so it might not be exactly right.) After several seconds, the multi-line message scrolled up and a new version appeared below.

    The current kernel version is 4.15.0.-50; it was 4.15.0-48 for the first three failures.

    I've seen suggestions that this error message can arise when there as a result of hardware issues. There have been no hardware changes recently, though I did fill the empty memory slots when upgrading to 18.04.

    Any advice would be appreciated.

  2. #2
    Join Date
    Feb 2017

    Re: Sost lock-up error?

    Sorry, I checked the text before posting, but not the title. "Soft lockup error?"


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