I'm new to Mate but not Linux. I'm using 20.10 on an AMD FX(tm)-8120 with a GeForce GTX 1070 Ti NVIDA card.
The only non-open source software that I use is Mathematica (12.2), which I use extensively. The issue is that I get unwanted horizontal lines just below the cell that I'm working on which sometimes interfere with what I'm doing. This doesn't happen with standard Ubuntu. Below is a shortlist of installs that have worked and ones that gave me the issue:
Kubuntu (20.04): Mathematica issues with unwanted horizontal lines
Gnome desktop installed on my Kubuntu: Mathematica worked but I had all kinds of other KDE/Gnome issues
Ubuntu Mate(20.10): Mathematica issues with unwanted horizontal lines
I would really like to stay with Ubuntu Mate but I have to solve the Mathematica issue.
Can anyone point me to what to look for in the differences in the display manages between Gnome 3 and (Kubuntu and Ubuntu Mate)? What are some things that I can try? I'm stuck because I do not even know what question I should be asking.