One real annoying issue working with a Raspberry Pi over Wifi is that the Wifi dongle goes into power saving mode. Thus the ssh connections lags or a connect isn’t even possible. But we can solve that. First we have to check that you have a specific USB dongle by executing the following command:
dmesg | grep rtl8192cu
If you see something like “usbcore: registered new interface driver rtl8192cu” as result, we can solve the issue. Edit the following file:
sudo nano /etc/modprobe.d/8192cu.conf
and add the following:
# Disable power saving options 8192cu rtw_power_mgnt=0
Now reboot and enjoy your stable Wifi connection without interrupts.