I hope you can help me. Last night I started my laptop (running Ubuntu Studio 18.04) and got a message if I wanted to upgrade to version 20.04. I startet die Update, and it ran the whole night. This Morning, it showed the message that it had finished and I should reboot the machine to finish the update. I did that. Now, whenever I try to start the machine, it does not go into the GUI, but I get a command prompt for my Login and Password. After I enter my Login and PW, it says "Welcome to Ubuntu 20.04 [...] 0 updates can be installed immediately. 0 of these updates are security updates. Failed to connect to https://chengelog.ubuntu.com/meta-release-lts. Check your internet connection or proxy settings"
And now I am stuck there. What can I do? I have been searching the internet for 1 1/2 hours now, but could not find anything that helped me.
Usually the laptop is in WLAN, but I also tried connecting an ethernet cable directly to my router. But when I try to ping anything it says the network is not connected, I also see no activity from the LEDs on the LAN-Port.
(Sorry, I am a noob to Linux, I just installed Ubuntu Studio a few months ago on this laptop, because I only use it as an occasional backup and did not want to buy a windows 10 license to upgrade a 13 year old machine)
Any help is much appreciated.
