This fontcofig error is still filling up lines in my terminal
I'm new to Linux distros (using Ubuntu 16.04) and I need help to solve this problem. I've searched for threads and found one, Fontconfig error - "out of memory", but I really can't apply the solution presented there because my terminal is still busy laying out these errors; it may not also be the thread I need to look for because the terminal doesn't say I'm out of memory, this happened when I opened Firefox. (I don't want to just kill every process, I did that a couple of times now and what usually happens when things go awfully wrong, my internal HDD becomes read-only. btw, I'm still a week-old user of Ubuntu) How do I safely abort whatever the terminal is doing?
I closed Firefox and the terminal stopped the warnings, but I want to know what's behind that. Does anyone know?