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DM8127_IPNC_RDK3.8 Qt如何在HDMI/TV显示

我用的是DM8127_IPNC_RDK3.8,我已经交叉编译了qt-everywhere-opensource-src-4.6.2,将库文件等移植到板子上了,我想在实现的采集显示等视频功能上,再加上QT显示,在运行的时候出错:

Error opening framebuffer device /dev/fb0
QScreenLinuxFb::connect: No such file or directory

查看/dev/下确实没有fb相关设备。

请问QT如何实现在HDMI或者TV上显示??