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https://bugs.launchpad.net/bugs/1981109

Title:
  server image pulls in ModemManager via fwupd, consumes 25MiB RAM in
  every container

Status in fwupd package in Ubuntu:
  Invalid
Status in livecd-rootfs package in Ubuntu:
  Fix Released
Status in modemmanager package in Ubuntu:
  Triaged
Status in ubuntu-meta package in Ubuntu:
  New
Status in fwupd source package in Jammy:
  Invalid
Status in livecd-rootfs source package in Jammy:
  Fix Released
Status in modemmanager source package in Jammy:
  New
Status in ubuntu-meta source package in Jammy:
  New

Bug description:
  [Impact]

  Cloud images should not have fwupd, modemmanager, and udisks2
  installed as those are not needed and only taking up memory.

  [Test Case]

  Build cloud images with livecd-rootfs and confirm that fwupd,
  modemmanager, and udisks2 are not present and not running.

  [Regression Potential]

  Only thing that might happen is for any of the 3 listed packages
  getting removed from images where they might be used. So possibly
  double-checking if this will affect preinstalled server images and if
  they care about this or not.

  [Original Description]

  Looking at memory utilization in a pristine Ubuntu lxd container (top
  -o RES), I see that ModemManager is running, which I was surprised to
  see is present at all in the stock image.

  Tracking this I find that fwupd depends on libmm-glib0, which in turn
  Recommends: modemmanager.

  Libraries in general should not recommend daemons, so it's possible
  this should be fixed by libmm-glib0 dropping this Recommends.  It
  certainly doesn't seem to be a deliberate decision by the Server Team
  to have modemmanager installed and running by default on all systems.

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