Comment # 1 on bug 1188940 from Michal Suchanek

It sometimes powers on and sometimes does not.

hramrach@naga:~> bluetoothctl 
Agent registered
[CHG] Controller 00:E0:3C:87:B8:03 Pairable: yes
[bluetooth]# power on
Failed to set power on: org.bluez.Error.Failed
[bluetooth]# power on
Failed to set power on: org.bluez.Error.Busy
[bluetooth]# power on
Failed to set power on: org.bluez.Error.Busy
[bluetooth]# power on
Failed to set power on: org.bluez.Error.Busy
[DEL] Device F4:0E:11:7D:3B:E5 SE-MS7BT
[DEL] Controller 00:E0:3C:87:B8:03 naga [default]
[NEW] Controller 00:E0:3C:87:B8:03 naga [default]
[NEW] Device F4:0E:11:7D:3B:E5 SE-MS7BT
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 0000110e-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 0000111f-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 00001200-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 00001112-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 00001108-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 0000110c-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 00001800-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 0000110a-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 00001801-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 0000110b-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 0000180a-0000-1000-8000-00805f9b34fb
[bluetooth]# power on
Failed to set power on: org.bluez.Error.Failed
[DEL] Device F4:0E:11:7D:3B:E5 SE-MS7BT
[DEL] Controller 00:E0:3C:87:B8:03 naga [default]
[NEW] Controller 00:E0:3C:87:B8:03 naga [default]
[NEW] Device F4:0E:11:7D:3B:E5 SE-MS7BT
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 0000110e-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 0000111f-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 00001200-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 00001112-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 00001108-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 0000110c-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 00001800-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 0000110a-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 00001801-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 0000110b-0000-1000-8000-00805f9b34fb
[CHG] Controller 00:E0:3C:87:B8:03 UUIDs: 0000180a-0000-1000-8000-00805f9b34fb
[bluetooth]# power on
[CHG] Controller 00:E0:3C:87:B8:03 Class: 0x006c010c
Changing power on succeeded
[CHG] Controller 00:E0:3C:87:B8:03 Powered: yes
[bluetooth]#