Issues with Quartus 14.1 jtag support with DE0-Nano board on Linux 3.19.0

I recently received a DE0-Nano board from a contest, which I've been trying to get working with the latest Quartus. I downloaded the IDE from Altera (md5 checksum matches), installed it and tried loading a simple application to make an LED change when a button is pressed. The project builds fine, but when trying to download to the board, Quartus just freezes for a moment before coming back.

I happened to have a copy of Quartus 13.1 on my computer that I had installed for some university work, and it able to download code to the board, so I know the USB connection is fine. In fact, if I run jtagd from 13.1 (64 or 32 bit) against the 14.1 programmer, it works fine.

I then tried playing with a Nios II project from 14.1, but I ran into the same issue with the Nios II IDE. I can compile the code fine, but attempting to run it breaks. Using 13.1's Nios tools, I can upload the elf fine.

Thus, it appears something is wrong with 14.1. Has anyone else experienced a similar issue? I can't think of anything more to investigate. Using strace on 14.1 reveals it gets stuck talking to the kernel. I'd like to get 14.1 working properly, but for now I do have my workarounds in place.

This happened both with and without Update 1 applied.