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DM8127上电2分钟后,串口和web显示都不正常

Other Parts Discussed in Thread: TVP5150

开发平台:DM8127+RDK3.5

视频输入:PAL -> tvp5150 ->DM8127

问题:上电刚开始,串口可以正常的输命令,上位机web也可以正常的显示图像。但是,两分钟以后,串口和网络都卡死了。其中,串口卡死的表现就是敲回车键,只显示空白行,没有显示root@DM8127_IPNC:~# ,如下图所示

请问这是什么原因?