This is a random example of a PDF that will show only blank pages on Onyx M92:
http://archive.org/details/hiddenchurchofho00waituoft
Any books from this website seem to have the same problem; it's a major website, from which I peruse hundreds of sources.
Note: The pages show correctly in 'thumbnails view', but of course no one reads thumbnails.
I've tried DjVu, but here I have no idea how to download a DjVu file; I can open it and read it, but there does't seem to be a way of downloading.
As a scholar, I don't use ePub or other 'flowing text' formats; I can only read text presented the way it was originally published, with set book pages.
I have tried software to flatten PDFs, with no results, but perhaps I did something wrong.