[Bug 2126662] [NEW] "System restart required" notification is missing an app name/icon

[Alessandro Astone]

Public bug reported:

The "System restart required" notification, which shows up after
applying an update that flags /var/run/reboot-required, is not
associated with any application. Thus, GNOME Shell falls back to showing
the name of the process requesting the notification.

We should not be showing process names to the user. We should set the
"desktop-entry" hint so that notification servers like GNOME Shell can
show the notification as originating from an application with a name and
icon.

The notification comes from the `update-notifier` process, which is not
an application in itself. We can claim that the originating application
is `update-manager.desktop`, which makes sense for a notification asking
to reboot after applying system updates.

Before (below) and after (above):
https://people.ubuntu.com/~aleasto/reboot-notification.png

** Affects: update-notifier (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2126662

Title:
  "System restart required" notification is missing an app name/icon

Status in update-notifier package in Ubuntu:
  New

Bug description:
  The "System restart required" notification, which shows up after
  applying an update that flags /var/run/reboot-required, is not
  associated with any application. Thus, GNOME Shell falls back to
  showing the name of the process requesting the notification.

  We should not be showing process names to the user. We should set the
  "desktop-entry" hint so that notification servers like GNOME Shell can
  show the notification as originating from an application with a name
  and icon.

  The notification comes from the `update-notifier` process, which is
  not an application in itself. We can claim that the originating
  application is `update-manager.desktop`, which makes sense for a
  notification asking to reboot after applying system updates.

  Before (below) and after (above):
  https://people.ubuntu.com/~aleasto/reboot-notification.png

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