After I updated my desktop to Linux kernel version 5 when I logging in my network would disconnect/reconnect every 15 seconds or so. I wasn’t able to get on the internet. My ethernet cable was plugged directly into my motherboard and I don’t have wifi capabilities.
The Solution
I added this conf:
/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
With this content:
[connection]
wifi.powersave=0
After a reboot all was well.