Russian outside, help, quite notoriously, and utterly unforgivably, if memory serves, in 1848.
It is a fascinating topic, and unfortunately you are quite right; few people care much about it, and I also think it has been bedevilled by a sort of retrospective history - the sort of stuff that argues, blithely - "it was inevitable it was going to fail".
Actually, I don't think it was inevitable, by the early 20th century the polity was developing in an interesting direction, and one thing many historians & observers overlook is the fact that the Austro-Hungarian Empire had introduced universal male suffrage in 1907 (well before the UK, for example), and - by then, at least, and had been heading in that direction from the time of the inception of the Dual Monarchy in 1867 - was very much a constitutional monarchy, one where the parliament had become increasingly powerful from the late1860s.
Now, of course, Habsburg monarchs conceded all of this belatedly and with great reluctance; it took several ferocious military defeats for them to adapt to the 19th century, let alone the twentieth.
Nevertheless, ever since one of their Kings drowned in the 1520s, the Hungarians had been equivocal - and conditional and at times, very reluctant, - subjects of the Habsburgs; of course, - and this is where it does get interesting - the coronation oath sworn by whatever Habsburg took the throne as King (or Queen, Maria Theresa managed to win the somewhat reluctant loyalties of the Hungarians in 1740) of Hungary was quite different to the authority a reigning Habsburg wielded as Emperor (or Empress) of Austria.