I've been using Aircrack for a short time now with my Alfa wfif adapter on my laptop and it's been working perfectly. However when I try and do the same thing on my Raspberry Pi it's having issues capturing the WPA2 handshake. As of yet I have not captured a single handshake from my Rasp Pi with all the same hardware. The only difference I can see is that I'm running Raspbian (A version of Debian) on my Rasp Pi.
I've been testing it on my own router that I am sitting right next to so physical distance is not the issue. Everything else works, like deauthing devices, as well as monitor mode, but I'm still not capturing the handshake every time I get on with my phone. Any suggestions on how to fix this issue, or at least where I can start looking for the problem?