我用ubuntu16.04执行完make px4fmu-v2 default upload后，便出现了下面的情况...
官网上的说法是这样的
After it says “waiting for bootloader” plugin your PX4 on USB.
If upload consistently fails in the erase step then check if you are running ‘modemmanager’ which can take control of the PX4 USB port. Removing modemmanager can help.
但是我的pixhawk是插上了的，ubuntu上也是显示px4已连接，模式管理器也已经卸载。换用QTcreator编译时会报这个错
弄了一天也没弄好，在线等求大神解答
官网上的说法是这样的
After it says “waiting for bootloader” plugin your PX4 on USB.
If upload consistently fails in the erase step then check if you are running ‘modemmanager’ which can take control of the PX4 USB port. Removing modemmanager can help.
但是我的pixhawk是插上了的，ubuntu上也是显示px4已连接，模式管理器也已经卸载。换用QTcreator编译时会报这个错
弄了一天也没弄好，在线等求大神解答
