I've been using Linux since 2002 and there have been many hours spent configuring and fixing broken functionality over the years, but I just installed Ubuntu 20.04 a few days ago (switched from Arch) and have experienced no problems at all. Everything is working perfectly out of the box as far as I can tell. It's unfortunate that you're having so many problems. I definitely know the frustration of getting hardware to work in Linux, but it's come a long way over the years.
I've been using Linux since 2002 and there have been many hours spent configuring and fixing broken functionality over the years, but I just installed Ubuntu 20.04 a few days ago (switched from Arch) and have experienced no problems at all. Everything is working perfectly out of the box as far as I can tell. It's unfortunate that you're having so many problems. I definitely know the frustration of getting hardware to work in Linux, but it's come a long way over the years.
You were lucky. They broke the clipboard (GNOME did) with Ubuntu 19.10 (Eoan Ermine) (it worked fine in Ubuntu 19.04 (Disco Dingo)), and it wasn't fixed in Ubuntu 20.04.