WhyCan Forum(哇酷开发者社区)

大家好
小弟在win10上刚安装了adb后 ，USB连上R329的板子后，在PC的命令行端无法找到板子

adb.exe: no devices/emulators found

并且我在设备端一运行 /etc/init.d/adbd start
串口就会打印
[ 4340.637345] sunxi_set_cur_vol_work()408 WARN: get power supply failed
[ 4344.137994] sunxi_set_cur_vol_work()408 WARN: get power supply failed
[ 4347.638392] sunxi_set_cur_vol_work()408 WARN: get power supply failed

请问这是啥原因啊？
感谢各位大神指点啊