Yes, it just works for me, always has (as in I have never done any special setup for it). Are you able to stream games from the PC? As in use the deck as a steam link and play games from your PC on it. The reason I’m asking is because that also only works on LAN, so if that works we know steam is able to see the other PC. A possibility might also be that the PC has a slower connection than the Deck so it’s literally faster for the Deck to get stuff from the internet than it is to get it from your PC.
That is sound advice, the AUR is most definitely not a trusted source though. For the normal arch repos the people who put the stuff there are known, they work for the project, you’re as likely to get malware from one of those as you are to read an article bashing gamespot in gamespot, the people in charge of putting the packages there are the ones with more vested interest in things working so they won’t knowingly introduce malicious code (plus it’s a handful of people who know each other by first name).
The AUR is a different story, because anyone can put stuff there it’s very easy to have malicious code end up there. It doesn’t happen that often because most of the time it’s fairly obvious and it gets flagged straight away, plus if people start doing that people will migrate away from the AUR, so it’s a high risk low reward situation. But as more and more people start to use Arch derivatives that come with the AUR enabled without understanding any of this it becomes a more rewarding thing to exploit.