关于x3开发板使用usb摄像头报错的问题

Error opening device /dev/video0: neither video capture nor video output supported.

(vioproduce.cpp:2008): camer_open /dev/video0 failed, try to open /dev/video0

##function camera_open in

Error opening device /dev/video0: neither video capture nor video output supported.

(vioproduce.cpp:2012): camer_open /dev/video0 failed, try to open /dev/video8

##function camera_open in

Error opening device /dev/video8: 2.

(vioproduce.cpp:2019): camera_open failed

#

# Fatal error in /home/hyl/hyl-disk/horizon_x3/AI-EXPRESS/source/solution_zoo/common/xproto_plugins/iotvioplugin/src/vioplugin/vioproduce.cpp, line 1778

# last system error: 9

# Check failed: InitUvc(dev_name) >= 0

#

#

==== C stack trace ===============================

1: rtc::FatalMessage::~FatalMessage()

2: horizon::vision::xproto::vioplugin::UsbCam::Run()

3: horizon::vision::xproto::vioplugin::Executor::Run()

/usr/lib/libstdc++.so.6(+0xb922c) [0x7fad07322c]

/lib/libpthread.so.0(+0x78e4) [0x7fad44b8e4]

[ 1222.165301] [S0] ipu last process close disable channels

[ 1222.166054] [S1] ipu last process close disable channels

[ 1222.166745] [S2] ipu last process close disable channels

[ 1222.167434] [S3] ipu last process close disable channels

Aborted (core dumped)

以下是经过验证的了。

1、从github上同步的AIexpress，重新编译下载，跑feedback例程可以的。

2、跑外接usb摄像头失败。

请问是哪里问题呢。