Comment 127 for bug 1878279

Hi. I did verify the image. Now, I manage to get through the black screen by using win+fn+f2 to go to tty2 then win+fn+f1 to go to login screen. Sometimes if it stuck at black screen, I would use the method mentioned above. Sometimes it manage to get to the login screen directly. But I do think this issue has sth to do with the touchpad. Cuz I will see the error messages controller timeout when I shut the system down (if the touchpad is nit working). For my laptop, the touchpad works sometimes while sometimes it doesn't.