Certainly seems like the logical way to do it, but it's much easier said than done.
I have tried writing a list of what needs to be done, that was an epic fail, then I tried doing 1 chapter at once, kept getting distracted, and I have tried countless other things.
Two suggestions, both of which may fall under the heading of the countless other things you already tried, but here goes:
1) random dictionary attack: open the dictionary to a random point with your eyes closed, stab your finger down somewhere, then open your eyes and do your best to make that work apply somehow to the current page of your novel, no matter how retarded the connection may seem.
2) what would.. attack: ask yourself, as if you were talking to another person, what a non-blocked writer would be doing at that point in the story. If the answer is "I dunno" even after a few minutes, ask yourself what someone who did
know be doing. If the answer is "this is stupid", ask yourself what would someone who did not
think this is stupid be doing, etc.
Both a little off the wall, but both have worked for me in other problem areas, so you might want to try.