调用rknn-api的init_runtime卡主不动

请问一下在使用RK1808M0计算卡推理的时候，一直卡在init_runtime环节也没报错，输出信息如下，是怎么回事？

D target set by user is: rk1808
D Starting ntp or adb, target is RK1808, host is None
D Start ntp...
I npu_transfer_proxy pid: 2088, status: sleeping
I NPUTransfer: Starting NPU Transfer Client, Transfer version 2.0.0 (8f9ebbc@2020-04-03T09:12:30)
D NPUTransfer: Transfer spec = local:transfer_proxy
D NPUTransfer: Transfer interface successfully opened, fd = 3

rknn-toolkit版本1.4.0，DRV版本1.5.0，有谁知道怎么解决吗