Hardware for dell g7 ti i7-9750-1660, SSD distributed 120 g, to the ubuntu installation after ubuntu18.04 input method there is no problem after installing the ros bugs, (video below) http://tieba.baidu.com/p/6373714864 im oneself refresh once in a while (can see the refresh themselves) in typing is not very convenient, online search data also did not find useful information, please have a great god without solution