记录Ubuntu报错:qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/usr/local/lib/python3.6/dist-packages/cv2/qt/plugins" even though it was found

记录Ubuntu报错:qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/usr/local/lib/python3.6/dist-packages/cv2/qt/plugins" even though it was found

• 原因是你的python中opencv版本过高将opencv-python版本 由 4.5 下降为 4.3.0.36

pip3 install opencv-python==4.3.0.36

• 报错：ImportError: libSM.so.6: cannot open shared object file: No such file or directory

可参照：https://blog.csdn.net/qq_35037684/article/details/106590685

• cannot connect to X server 问题

可参照：https://www.cnblogs.com/ocean1100/p/12559568.html