我正在尝试使用Python BLE库在IOS和Ubuntu上连接我的BLE设备，现在它在IOS上运行良好，但是当它在调用时在Ubuntu上执行相同的脚本时总是失败＃34; adapter.start_scan＆＃34;被称为：
adapter.start_scan()
File "build/bdist.linux-x86_64/egg/Adafruit_BluefruitLE/bluez_dbus/adapter.py", line 69, in start_scan
File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 145, in __call__
**keywords)
File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in call_blocking
message, timeout)
dbus.exceptions.DBusException: org.bluez.Error.InProgress: Operation already in progress
我到处搜索，但仍然无法获得解决方案。任何人都可以帮我吗？