<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Oct 25, 2016 at 9:20 AM, John Rigg <span dir="ltr"><<a href="mailto:j@jrigg.co.uk" target="_blank">j@jrigg.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span class="gmail-">On Mon, Oct 24, 2016 at 08:45:24PM +0200, Alexandros Drymonitis wrote:<br>
> 20:34:37.681 /usr/bin/jackd -dalsa -r48000 -p1024 -n2 -Xraw -D -Chw:USB<br>
> -Phw:USB -i2 -o4<br>
<br>
</span>What happens if you leave out the -i2 and -o4 options?<br></blockquote><div>The same. Here are the messages when using the default Channels I/O:<br>

<p style="margin:0px;text-indent:0px"><span style="color:rgb(153,153,153)">10:04:03.999 Patchbay deactivated.</span></p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(153,153,153)">10:04:04.003 Statistics reset.</span></p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(204,204,153)">10:04:04.117 ALSA connection change.</span></p>
<p style="margin:0px;text-indent:0px">connect(2) call to /tmp/jack-1000/default/jack_0 failed (err=No such file or directory)</p>
<p style="margin:0px;text-indent:0px">attempt to connect to server failed</p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(102,204,153)">10:04:04.151 ALSA connection graph change.</span></p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(153,153,153)">10:04:21.737 JACK is starting...</span></p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(153,0,153)">10:04:21.738 /usr/bin/jackd -dalsa -r48000 -p1024 -n2 -Xraw -D -Chw:USB -Phw:USB</span></p>
<p style="margin:0px;text-indent:0px">connect(2) call to /tmp/jack-1000/default/jack_0 failed (err=No such file or directory)</p>
<p style="margin:0px;text-indent:0px">attempt to connect to server failed</p>
<p style="margin:0px;text-indent:0px">jackd 0.124.1</p>
<p style="margin:0px;text-indent:0px">Copyright 2001-2009 Paul Davis, Stephane Letz, Jack O'Quinn, Torben Hohn and others.</p>
<p style="margin:0px;text-indent:0px">jackd comes with ABSOLUTELY NO WARRANTY</p>
<p style="margin:0px;text-indent:0px">This is free software, and you are welcome to redistribute it</p>
<p style="margin:0px;text-indent:0px">under certain conditions; see the file COPYING for details</p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(153,153,153)">10:04:21.753 JACK was started with PID=3690.</span></p>
<p style="margin:0px;text-indent:0px">JACK compiled with System V SHM support.</p>
<p style="margin:0px;text-indent:0px">loading driver ..</p>
<p style="margin:0px;text-indent:0px">apparent rate = 48000</p>
<p style="margin:0px;text-indent:0px">creating alsa driver ... hw:USB|hw:USB|1024|2|48000|0|0|nomon|swmeter|-|32bit</p>
<p style="margin:0px;text-indent:0px">configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 2 periods</p>
<p style="margin:0px;text-indent:0px">ALSA: final selected sample format for capture: 32bit integer little-endian</p>
<p style="margin:0px;text-indent:0px">ALSA: use 2 periods for capture</p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(153,153,51)">10:04:23.820 Server configuration saved to "/home/odroid/.jackdrc".</span></p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(153,153,153)">10:04:23.822 Statistics reset.</span></p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(153,153,153)">10:04:23.929 Client activated.</span></p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(153,102,51)">10:04:23.933 Buffer size change (0).</span></p>
<p style="margin:0px;text-indent:0px">ALSA: final selected sample format for playback: 32bit integer little-endian</p>
<p style="margin:0px;text-indent:0px">ALSA: use 2 periods for playback</p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(153,102,51)">10:04:24.721 Buffer size change (1024).</span></p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(204,153,102)">10:04:24.722 JACK connection graph change.</span></p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(153,153,204)">10:04:24.733 JACK connection change.</span></p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(204,102,102)">10:04:25.674 Shutdown notification.</span></p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(153,153,153)">10:04:25.682 Client deactivated.</span></p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(153,153,153)">10:04:25.684 JACK is being forced...</span></p>
<p style="margin:0px;text-indent:0px">cannot read server event (Success)</p>
<p style="margin:0px;text-indent:0px">cannot continue execution of the processing graph (Bad file descriptor)</p>
<p style="margin:0px;text-indent:0px">graph error - calling shutdown handler</p>
<p style="margin:0px;text-indent:0px">cannot send request type 7 to server</p>
<p style="margin:0px;text-indent:0px">cannot read result for request type 7 from server (Broken pipe)</p>
<p style="margin:0px;text-indent:0px">cannot send request type 7 to server</p>
<p style="margin:0px;text-indent:0px">cannot read result for request type 7 from server (Broken pipe)</p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(204,51,102)">10:04:25.692 JACK has crashed.</span></p>
<p style="margin:0px;text-indent:0px"><span style="color:rgb(153,153,153)">10:04:25.885 JACK was stopped</span></p> </div></div><br></div></div>