Alack of hungarian representatives in the government and lead to uprisings against austrian rule.

I believe that the other reason was the general lack of inclusion of Hungary into the ruling of the empire. Hungary, felt not on equal footing with Austria in the country and wanted to have more influence; the Hungarian people felt excluded and felt that they had a minority status

The Austria - Hungary is also referred to as Austro-Hungarian empire or Austro-Hungarian monarchy known also as the Habsburg empire from the constitutional compromise known as Ausgleich of 1867.  A lack of Hungarian representatives in the government and the feeling of the minority status and exlusion of the Hungarian people lead to uprisings against Austrian rule. This uprisings happened on 1848 to 1849 because the people wanted independence or autonomy and even hegemony over other countries. The people might have been tired feeling manipulated by other people outside their race and nation.

I'm pretty sure that's called a volcano