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beaglebone LCD HDMI同时显示(分辨率相同),应该怎么配置



前提:

SDK版本:ti-processor-sdk-linux-am335x-evm-04.03.00.05-Linux-x86-Install.bin
硬件:BBB板REVC+5寸电容触摸屏+HDMI

1.修改boot参数 setenv optargs video=HDMI-1:800x480 HDMI正常显示

2.修改boot参数 setenv optargs video=LVDS-1:800x480 LCD正常显示

Q:怎么设置下 才能让HDMI&LCD同时显示

谢谢!