I have a very old laptop Toshiba Satellite M305-S4848, from 2010. I used to run Ubuntu 14.04 on it until a few years ago. Now, I’m trying to use it again. Everything is fine, except for the fact it can’t update its Ubuntu 14.04 (nor the Firefox). It tells me to check the internet connection, but everything else is fine. I’m even typing this from it right now.
Please, how should I proceed to solve this?
Thanks in advance.