Wen using opencv, the following error occurs.ImportError: /usr/lib/arm-linux-gnueabihf/libgdk-x11-2.0.so.0: undefined symbol: XRRGetMonitors

Banana pi BPI-M3 new image:Ubuntu-16.04-mate-desktop-beta-bpi-m3-ov8865-sd-emmc-2017-07-13에서 토론을 계속: