Hi Peder. Thanks for your assistance. Info below:<br><br>&gt;What CPU do you have (grep &quot;model name&quot; /proc/cpuinfo)?<br><br>AMD Phenom(tm) 9750 Quad-Core Processor<br><br>
&gt;Have you made the limits.conf hack to enable realtime and are you<br><br>I&#39;m afraid I have no idea. I have a real-time kernel and I have it set to on when I use firewire, but off when I use alsa. All music production (when I get the one-off xruns) happens only when using firewire, and thus with realtime on.<br>
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&gt;running jack in realtime (with say -P70)?<br><br>Yes I have jack in realtime, on exactly P70, but ONLY in firewire mode. Alsa mode is set to default priority and non-realtime. I have QjackCtl setup so that it launches and starts in Alsa-mode when I boot my computer. When I do music stuff and turn my firewire device on I switch to the &quot;firewire&quot; preset which is realtime P70.<br>
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&gt;Are you running jack with ?ber-low latency; what&#39;s the frames/period setting?<br><br>In firewire mode I have frames/period setting of 256 with buffer on 3 = a latency of 17.4 msec. Alsa mode is much higher on 1024 and around 70 msec (but I believe that should be irrelevant as I don&#39;t do any audio/midi jack connection stuff in Alsa mode.<br>
<br>-Dan<br>