Do you have a link to the forum thread where you asked for help? Perhaps there’s information there that would prevent duplication of effort.
Maybe. If something works then use it until the thing that doesn’t work works. That also means it doesn’t look like you’re trying to make people feel guilty that they can’t help you.
You might also want to look at the various log files that are available, for example /var/log/Xorg.0.log or when running startx in a terminal: