[linux-audio-user] rosegarden, chionic and mixxx hardlock my box

Hi people! Just tried mixxx-1.5.0-beta1 and unfortunately i have to count it to my list of "box killers". This list currently contains * rosegarden * chionic * mixxx Interestingly those are all QT apps. But QT works fine here, for example MusE just works like a charm. And now im interested in finding out what causes those three apps to completely hardlock my system. And they _really_ HARDlock it, in a way that the kernel doesn't even react on a sysrq+s/u/b call anymore. no keyboard, no mouse, nothing in any logs.. just dead. Crappy hardware also is not the cause i guess, as card 1 is a M-Audio Audiophile 2496, and card 2 is a ESI Juli@ - and as said apps like MusE, LMMS and a big number of other apps work just fine. I tested it on both cards, in case of rosegarden with both, direct ALSA and jack output, and it hardlocks the system shortly after the splash is displayed. I have no idea what could be the cause because i can't get a trace or anything and have to hard-reset the box. I would be very pleased if anyone has an idea where to start with debugging that. Thanks in advance Tom