> my problems are not in recording audio or playing external midi > equipment but in playing soft-synth. for example if run the 3rd patch of > hexter (FatThinE.P.) at 32notes of poliphony or the patch "The master" > of LMMS i got a lot of xrun. What kind of hardware do you have? Have you set up Jack to use realtime? You should see a faint yellow RT in the qjackctl window. > where can i download the -ck patchset? It's here: http://members.optusnet.com.au/ckolivas/kernel/ but I doubt it'll patch cleanly against Mandrivas kernel. I'd go for the latest 2.6.14 (think it's .6) and get the latest Ingo patch for that kernel (2.6.15 requires a new udev so that might not be the easiest kernel to get to work in Mandriva). - Peder