[Bug 2127933] Re: Network status shows ethernet connected when no connection is available

[Antoine Lassagne]

Hello,

I just ran the test plan on Questing:
```
antoine at ubuntu-laptop:~$ apt policy gnome-shell
gnome-shell:
  Installed: 49.0-1ubuntu1.2
  Candidate: 49.0-1ubuntu1.2
  Version table:
 *** 49.0-1ubuntu1.2 100
        100 http://archive.ubuntu.com/ubuntu questing-proposed/main amd64 Packa>
        100 /var/lib/dpkg/status
     49.0-1ubuntu1.1 500 (phased 30%)
        500 http://archive.ubuntu.com/ubuntu questing-updates/main amd64 Packag>
     49.0-1ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu questing/main amd64 Packages
```

** Tags removed: verification-needed verification-needed-questing
** Tags added: verification-done verification-done-questing

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https://bugs.launchpad.net/bugs/2127933

Title:
  Network status shows ethernet connected when no connection is
  available

Status in GNOME Shell:
  Fix Released
Status in gnome-shell package in Ubuntu:
  Fix Committed
Status in gnome-shell source package in Noble:
  In Progress
Status in gnome-shell source package in Plucky:
  Won't Fix
Status in gnome-shell source package in Questing:
  Fix Committed
Status in gnome-shell source package in Resolute:
  Fix Committed

Bug description:
  Per upstream bugs: 
  - https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/7357
  - https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/8549

  And it got fixed with https://gitlab.gnome.org/GNOME/gnome-
  shell/-/merge_requests/3910

  ---------------------------
  SRU Justification:

  [ Impact ]

   * The "ethernet connected" symbol is displayed when no network
  connection is available.  If a WiFi connection is available then the
  WiFi symbol is displayed and if an Ethernet connection is available
  then the Ethernet icon is (correctly) displayed but if neither is
  available (WiFi switched off and cable unplugged) then the Ethernet
  icon is still displayed.

   * With the above, the reconnection is fixed.

  [ Fix ]

   * When there is no active main connection or it uses a device type we do not handle, the indicator icon and its visibility depend on the global connectivity.
   
   * However we currently don't update the icon on connectivity changes, with the result that we sometimes show the fallback connection icon when the network is in fact disconnected.

   * To fix this, update the icon whenever the (global) connectivity
  changes.

  [ Test Plan ]

   1. Connect to wifi, see the wifi icon

   2. Disconnect wifi from the menubar, see the ethernet icon pops in

   3. Do it again with the fix: no ethernet icon pops in

   4. Reconnect wifi, see the icon transitioning to connecting ->
  connected.

  [ Where problems could occur ]

   * The _updateIcon is now called more often than before, not less, so
  more frequent icon updates can be expected, but only when they are
  actually relevant thankfully.

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