I used to be able to use my Arctic P311 bluetooth headset for both, input and output, but now I can't. Well, it works fine as an output device but when I try to set it as a default input device in Sound Settings, settings windows breaks and goes down. At first it showed popups to report the problem but now it doesn't. It just dies now. I don't even know what is the problem.
How do I launch that application from terminal to see what it outputs? And/or maybe someone knows a potential problem?
P.S. Ubuntu 12.04 x64
Thanks to the reply, I can now change input source but I now can't change output source. But it's because sound settings application crashes instantly as it shows up.