Found 4 processes that could cause trouble.
If airodump-ng, aireplay-ng or airtun-ng stops working after
a short period of time, you may want to kill (some of) them!
PID Name
1794 avahi-daemon
1795 avahi-daemon
2174 NetworkManager
2858 wpa_supplicant
Interface Chipset Driver
$
what can be the reason for the same.