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今って、 Fedora 21 で bluetoothctl でヘッドセットに接続して、オンザフライで音声出力先変えられるのね、すごい。
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:blog_date:`2015/05/17`

.. contents::
   :local:
   :depth: 1

少し前
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少し前だと、オーディオの出力先を買えたい場合、出力設定を書き換えた後、マシンの再起動が必要だったと思う。

先ほど bluetoothctl 使って接続して使えた
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シンプルに ``bluetoothctl``
( `Arch Wiki Bluetoothctl <https://wiki.archlinux.org/index.php/Bluetooth#Bluetoothctl>`__ )
で接続して、 ``cinnamon`` の音声設定を UI から設定して、即座に反映できた。

.. code-block:: console

   $ sudo bluetoothctl
   [sudo] password for tomo:
   [NEW] Controller 60:D8:19:AF:1F:92 x220 [default]
   [bluetooth]# power on
   [CHG] Controller 60:D8:19:AF:1F:92 Class: 0x0c010c
   Changing power on succeeded
   [CHG] Controller 60:D8:19:AF:1F:92 Powered: yes
   [bluetooth]# scan
   Missing on/off argument
   [bluetooth]# scan on
   Discovery started
   [CHG] Controller 60:D8:19:AF:1F:92 Discovering: yes
   [NEW] Device 00:1A:7D:A0:AD:AA LBT-SPP11
   [bluetooth]# agent on
   Agent registered
   [bluetooth]# default-agent
   Default agent request successful
   [CHG] Device 00:1A:7D:A0:AD:AA RSSI: -51
   [bluetooth]# pair 00:1A:7D:A0:AD:AA
   Attempting to pair with 00:1A:7D:A0:AD:AA
   [CHG] Device 00:1A:7D:A0:AD:AA Connected: yes
   [CHG] Device 00:1A:7D:A0:AD:AA UUIDs: 00001108-0000-1000-8000-00805f9b34fb
   [CHG] Device 00:1A:7D:A0:AD:AA UUIDs: 0000110b-0000-1000-8000-00805f9b34fb
   [CHG] Device 00:1A:7D:A0:AD:AA UUIDs: 0000111e-0000-1000-8000-00805f9b34fb
   [CHG] Device 00:1A:7D:A0:AD:AA Paired: yes
   Pairing successful
   [CHG] Device 00:1A:7D:A0:AD:AA Connected: no
   [bluetooth]# connect 00:1A:7D:A0:AD:AA
   Attempting to connect to 00:1A:7D:A0:AD:AA
   [CHG] Device 00:1A:7D:A0:AD:AA Connected: yes
   [LBT-SPP11]# help
   Connection successful
   [LBT-SPP11]# trust 00:1A:7D:A0:AD:AA
   [CHG] Device 00:1A:7D:A0:AD:AA Trusted: yes
   Changing 00:1A:7D:A0:AD:AA trust succeeded
   [LBT-SPP11]# quit
   Agent unregistered
   [DEL] Controller 60:D8:19:AF:1F:92 x220 [default]

.. image:: /_images/201505170_fedora21_bluetoothctl_audio_001.png
   :width: 640px

``A2DP`` でクリアな音声も流れるし、すごい

終わりに
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進化してますねー