Ubuntu had 2.6.10 something with realtime-lsm module. On Suse I haven't recompiled the kernel. Just the realtime module, with the patched kernel. It's the one shipped with Suse 9.3 (2.6.11.4-21.7-default). I forgot to mention that before than that I also tried with a custom compiled vanilla 2.4.11.7 with rt-lsm and realtime-preempt patches and got loads of xruns. Anyway yesterday I pushed jack settings way to 5ms latency (p128 -n3 with 24bits, 44.100k, 2 ins, 2 outs). Is it possible to achieve such low latency for USB 1.1 card? I doubt I had two instances of jack running, changed settings on the frontmost qjackctl, and listened to the output from the first instance. I disconnected and reconnected Muse and Zyn various times to change the buffer size. And I also noticed the degradation of sound when pushing jack settings so too far. I haven't had any xrun. Even when connecting apps. c. Lee Revell wrote: >On Thu, 2005-07-28 at 01:18 +0200, Cesare Marilungo wrote: > >>Hi, >>I'm going crazy!!! >> >>Last night, after some months playing with Ubuntu, I installed SUSE 9.3 >>on my amd64 with an Edirol UA-25. I installed the kernel source, patched >>it with rt-lsm.patch, built the modules, installed ect. >>Added: >> > >Were the kernel versions different between the two systems? > >USB audio is known to have some problems with older 2.6 kernels. > >Lee > > > >