[jsb5717]

Are there other Wifi routers you've used that have worked with Ubuntu? I know next to nothing about Linux OS's but it does seem there are some universal protocols that have to be in place in order for LAN and WAN systems to cross-function with all kinds of different hardware along with various OS's and their different versions.

Is there a WAN port on the router into which you can connect a different Wifi router to see if it connects any better? Or even a wireless Wifi amplifier/booster you could try?

Seems like you shouldn't have to go through any of these steps but just thinking out loud for troubleshooting purposes.

Edit: just wondering about any Out-of-date issues? Old OS or old hardware that's isn't up to speed with newer hardware?