<html><body style="font-family: Helvetica,Arial,sans-serif; font-size: 12px;">Hi Guys,<div><br></div><div>I have 2 PCs, both with a 64 channel madi card. Machine 'A' is runing Win7, and the RME TotalMix is running showing what is on each channel. I am also running Reaper, which has a plugin generating tone on the 1st 8 channels which is visible on the TotalMix.</div><div><br></div><div>Machine 'B' is a dual boot Win7/Ubuntu 16.04, and when booted into Win7, the tone coming in on the madi stream channels 1-8 is clearly present and audable. When I boot into Ubuntu, I run QjackCtl and start Jack. I then start a simple program I have written from a tutorial I found that copies from the inputs to the outputs. Unfortunately, nothing is received on the inputs. On the outputs however if I fill the output Buffer with random numbers, the resulting noise appears on machine 'A', so not everything is a total disaster.</div><div><br></div><div>I have checked alsamixer for muting on the inputs and am now at a loss for possible causes. (I am summing the abs value of each frame in input and periodically printf the total, which is always zero.</div><div><br></div><div>Could someone more knowledgeable that myself suggest causes for the lack of input.</div><div><br></div><div>Zappa Fan. (mostly to make searching digests easier, but also true).</div><div><br></div><div><br></div></body></html>