Twice today I found myself wanting to tell a questioner that s(he) would be better served by turning to a distribution-specific forum. Is there a Stack Exchange policy about this?
In many cases - you probably are better off not doing so. People may get annoyed at the perception that you're promoting an off site research, and there's fundamental issues related to the two example questions which can, and might already be taken care of.
Kali Linux is a bit of a sore point for U&L, In my opinion, quite a lot of folks get dumped into the distro with illusions that it will make them a great hacker, without actual teaching of the fundamentals of the Linux platform. It's a disservice, and the point of the parent question is to point them at useful resources for knowing what's happening - you can find more context here.
The second question could use more comments. You have a user who has no idea where to start, and an off site resource isn't going to make the question any clearer. There's no answers because as is, Unless you had the same model of laptop, and had the same issues and solved it - there's nothing but "it doesn't work."
Considering SE's goals, if an off-site resource isn't a reference that is part of a more complete answer, it's probably not really going to be welcome. Imagine if people kept posting links to say, SE on Quora. Unless a post anywhere explicitly asks for a link to a forum (which, in turn would be off topic here), it is just bad etiquette.