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[Cas <1126108@xxxxxxxxxxxxxxxxxx>]

@charlemagne86 The patch in #13 is for an older version of indicator-
bluetooth, the latest code is quite different so the patch will not
work.

I have been looking in the code and the newly added 'supported' option
would work and thought I would update the ticket to show that it is
possible with simple changes.

=== modified file 'src/bluez.vala'
   void on_default_adapter_changed (string? object_path)
   {
     clear_adapter ();
+    supported = object_path != null;

=== modified file 'src/desktop.vala'
-    visible = bluetooth.enabled && settings.get_boolean("visible");
+    visible = (bluetooth.enabled || bluetooth.supported) && settings.get_boolean("visible");

However this uncovers a bug whereby turning bluetooth on/off from
indicator or settings works only once then fails on further attempts and
stays off with only a restart of the bluetooth service fixing the issue.

The requirement that hiding the indicator when no adaptor is physically
available is also possible but need to do a bit more testing as the
above issue confused things.

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https://bugs.launchpad.net/bugs/1126108

Title:
  Indicator disappears entirely when disabling / turning off bluetooth

Status in “indicator-bluetooth” package in Ubuntu:
  Confirmed

Bug description:
  Bug 1116289 made the BT indicator disappear when there is no hardware.
  However, with that version I now also have it disappear when my
  existing BT hardware is merely disabled. I. e. I disable BT from the
  indicator, then it disappears, leaving me no obvious method to turn it
  back on again. I can re-enabble it in control-center, and then the
  indicator comes back.

  I think when it sees no actual BT hardware it ought to check rfkill
  whether there is disabled BT hardware:

  $ grep -r . /sys/class/rfkill/rfkill0/{type,state,soft,persistent}
  /sys/class/rfkill/rfkill0/type:bluetooth
  /sys/class/rfkill/rfkill0/state:1
  /sys/class/rfkill/rfkill0/soft:0
  /sys/class/rfkill/rfkill0/persistent:1

  After disabling BT from the indicator, "soft" changes to 1:

  $ grep -r . /sys/class/rfkill/rfkill0/{type,state,soft,persistent}
  /sys/class/rfkill/rfkill0/type:bluetooth
  /sys/class/rfkill/rfkill0/state:0
  /sys/class/rfkill/rfkill0/soft:1
  /sys/class/rfkill/rfkill0/persistent:1

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: indicator-bluetooth 0.0.6-0ubuntu1
  ProcVersionSignature: Ubuntu 3.8.0-6.13-generic 3.8.0-rc7
  Uname: Linux 3.8.0-6-generic x86_64
  ApportVersion: 2.8-0ubuntu4
  Architecture: amd64
  Date: Fri Feb 15 12:08:26 2013
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2013-02-08 (7 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130207.1)
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: indicator-bluetooth
  UpgradeStatus: No upgrade log present (probably fresh install)

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