On Sat, 2005-08-06 at 18:01 -0400, Hector Centeno wrote: > Hi, > > I've being experiencing system freezes and IRQs dying with the kernels > that include Ingo's preempt patch using FC3+CCRMA and Demudi. I'm using > a USB audio interface (M-Audio Duo). I would like to post some > information hoping somebody could point me to a fix. This are my USB > controllers: First, try 2.6.13-rc4 + the latest RT preempt patch to make sure this is not fixed already. Otherwise, it looks like you have found a kernel bug, LAU is not the best place to report these. Please post this report to linux-kernel at vger.kernel.org and cc: alsa-devel at lists.sourceforge.net and mingo at elte.hu. Lee