These days, I rarely have a problem doing anything on Linux. However I had to fill out some legal documents. They were editable PDFs. I was able to fill them all out except one. Ocular reported that I needed a newer version of Adobe Reader. And also “This document has XFA forms, which are currently unsupported.”. Adobe no longer supports Linux. A PDF reader on my phone said it wasn’t an actual PDF and something about XML. Anywho I was able to fill it out using Adobe on my android phone. It would have tested the limits of my patients to type this on my phone. So I answered all questions using a linux text editor. And pasted the responses into the document on my phone.