can't start GUI mode debian 9

Then what next? I want to use gui version (I had sent an email about the same problem, before this one )

Bug#865771: general: always stuck before reaching gui mode and can not reach text mode with ctrl + alt + f6 (debian 9 stable, asus rog552vx)

Package: general Severity: important Dear Maintainer, *** Reporter, please consider answering these questions, where appropriate *** * What led up to the situation? * What exactly did you do (or not do) that was effective (or ineffective)? * What was the outcome of this action?