First of all, hello there and thank you for passing by to read about this problem. I’ve been fixing an old laptop so I could use it in uni. It’s a Dell Latitude D420. It used to have windows XP installed, but I decided updating it to Antergos XFCE, as a recommendation by a group of friends. The wireless receptor is a Wlan 1390 MiniCard.
I must say, I love this OS so far, and I think it really suits my needs, so far. For this problem I’ve searched for too many hours to give up on it at this point.
After installing the OS with a few packs (including the firewall one, I think it’s the one that can give me the issue). My internet’s bad by itself, my max download speed being 200kbps aprox, but when I use this laptop’s wifi, it only downloads at 10kbps, and it drains any possible wifi from other devices. Making it impossible to browse, let alone download, and to use other devices’ wifi around it. This didn’t happen when I had Windows XP installed.
I searched around and I saw a couple fixes, like: I had netctrl and NetworkManager at once (I understood they give issues together in that post) so I managed to uninstall netctrl with pacman -R. This didn’t solve my issue, but it seems it didn’t affect anything else, at least on first sight. I also deactivated wpa_supplicant, as another post suggested. Still nothing.
What data should I provide for this post to give any possible hint? Something else is that when it starts, it says something about not fincing cpu0, and that something (kvn, I think) is deactivated by the BIOS. I don’t know if that has to do anything with this.