WhyCan Forum(哇酷开发者社区)

问题描述： 
         1、没有运行qt 程序 时，网络一切正常。测试时长：2小时以上
         2、在运行qt程序时，没有黑色背景时，网络一切正常。测试时长：2小时以上
         3、在运行qt程序时，有一部分黑色背景时：
       
[  388.408522] dwmac-sun8i 1c30000.ethernet eth0: Link is Down
[  416.488530] dwmac-sun8i 1c30000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[  418.568416] dwmac-sun8i 1c30000.ethernet eth0: Link is Down
[  437.288544] dwmac-sun8i 1c30000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[  438.328431] dwmac-sun8i 1c30000.ethernet eth0: Link is Down
[  445.608542] dwmac-sun8i 1c30000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[  448.728471] dwmac-sun8i 1c30000.ethernet eth0: Link is Down
[  454.968534] dwmac-sun8i 1c30000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[  458.088520] dwmac-sun8i 1c30000.ethernet eth0: Link is Down
[  477.848571] dwmac-sun8i 1c30000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[  478.888454] dwmac-sun8i 1c30000.ethernet eth0: Link is Down
[  496.568539] dwmac-sun8i 1c30000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[  498.648404] dwmac-sun8i 1c30000.ethernet eth0: Link is Down