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Thread: Why are "packages have been kept back"?

  1. #1
    Join Date
    Mar 2009

    Why are "packages have been kept back"?

    I have a couple of Ubuntu 22.04 LTS servers running on a Proxmox host. Every now and then "apt upgrade" gives me the following message saying that it skipped packages. But why is that? Why is -in this case- tmux being skipped? I usually solve this by running "aptitude safe-upgrade", but I would like to understand this behaviour.

    me@playlist-exchange [~]$ sudo apt upgrade
    Reading package lists... Done
    Building dependency tree... Done
    Reading state information... Done
    Calculating upgrade... Done
    # News about significant security updates, features and services will
    # appear here to raise awareness and perhaps tease /r/Linux
    # Use 'pro config set apt_news=false' to hide this and future APT news.
    The following packages have been kept back:
    0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.

  2. #2
    Join Date
    Jun 2006
    Ubuntu 22.04 Jammy Jellyfish

    Re: Why are "packages have been kept back"?

    This recent thread explains about phased updates:
    Ubuntu 22.04 Desktop Guide - Ubuntu 24.04 Desktop Guide - Forum Guide to BBCode - Using BBCode code tags

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  3. #3
    Join Date
    Mar 2009

    Re: Why are "packages have been kept back"?

    Oh wow, this is actually by-design!
    Sorry, I wasn't aware of that. Well this explains it all, thanks!

    (and it's true that aptitude safe-upgrade indeed forces the install and skips the "waiting period"?)

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