[Bug 1874469] Re: [SRU] update-manger intermittently hangs during snap updates

[Mathew Hodson]

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https://bugs.launchpad.net/bugs/1874469

Title:
  [SRU] update-manger intermittently hangs during snap updates

Status in update-manager package in Ubuntu:
  Fix Committed
Status in update-manager source package in Focal:
  Fix Committed

Bug description:
  [Impact]

  Every so often update-manager can hang during snap updates. When this
  occurs the application must be force closed.

  [Test Case]

  Repeating the following will eventually cause a hang on "Installing
  snap-store snap".

  `
  sudo apt -y install gnome-software
  sudo apt-mark auto gnome-software

  snap remove snap-store

  update-manager
  `

  [Regression Potential]

  The fix is trivial (see linked branch), in fact, GLib.idle_add() was
  applied correctly elsewhere, it was just missed here.

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