我尝试了网络上发布的各种解决方案。有些在 Ubuntu 14.04 上有效，但不再有效。我尝试a2dp.py了这帖子产生以下输出：
Connection MADE
Selecting device:
Device MAC: 00:08:E0:6B:D5:0D
Device ID: bluez_card.00_08_E0_6B_D5_0D
Sink: bluez_sink.00_08_E0_6B_D5_0D
Turning off audio profile.
Disconnecting the device.
Connecting againt.
Setting A2DP profile
Device ID: bluez_card.00_08_E0_6B_D5_0D
Command: pactl set-card-profile bluez_card.00_08_E0_6B_D5_0D a2dp_sink failed with status: 1
stderr: Failure: Input/Output error
Exiting bluetoothctl
尝试手动连接/断开连接也会出现同样的结果。这个错误让我抓狂了好几年。有什么建议吗？