28 Sep
2016
28 Sep
'16
11:35 a.m.
On 09/28/2016 02:37 PM, godfrey.small(a)ams-neve.com wrote:
Hi Guys,
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.
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.
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.
I am not completely
sure, but kind of remember an option in alsamixer
for switching between MADI optical and BNC/coaxial for the
inputs/outputs, this might also be something you want to check.
Also, please test first with an application known to work, as mentioned
by others, Ardour for example.