Different output between xrandr and xdpyinfo

[limh at sunray.cn]

Hi 
I'm using hdmi and lvds with touch screen. But the touch screen can move the pointer between two monitors like the picture now.png.
But I want my touch screen to be applied on lvds like I want.png
So I follow arch wiki to set the configuration. But I found xrandr showed only one screen: 
root at imx6qsabresd:~# xrandr                                                            
Screen 0: minimum 240 x 240, current 1024 x 768, maximum 8192 x 8192
DISP3 BG connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1024x768_60.00  59.92*+

xdpyinfo showed two screens.
Here is xdpyinfo's output and /etc/X11/xorg.conf

Also, I found the HDMI screen's cursor is a cross(the same as  'X'). 

How to solve these problems?

Regards
Mihan
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