直接卸载了1.2.1,然后重新安装了2.2.0
安装步骤:https://blog.csdn.net/weixin_42232041/article/details/106201692
cuda10.1 + cudnn : https://blog.csdn.net/mdllll/article/details/112599096
cuda安装:https://blog.csdn.net/bingo_liu/article/details/103224730
错误解决:https://blog.csdn.net/weixin_41770169/article/details/80316247