Re: [LAU] Focusrite 2i4

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To: Kees van Veen <kees.vanveen@...>
Cc: Linux Audio Users <linux-audio-user@...>
Date: Saturday, January 11, 2014 - 7:52 pm

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You might try emailing Alan Stern about this. Could be related to kernel
USB handling..

James
On 10 Jan 2014 16:30, "Kees van Veen" wrote:

> [James Stone]

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You might try emailing Alan Stern about this. Could be relat=
ed to kernel USB handling..
James
On 10 Jan 2014 16:30, "Kees van Veen" =
<kees.vanveen@gmail.com&gt=
; wrote:

[James Stone]

Thanks for testing this.. Quite weird - so you are getting crackles
even at 1024x3!!? That sounds really odd and definitely an
unacceptable performance. I have definitely not heard anything like
this on my device. I wonder if it is some kind of hardware fault. Are
you able to test it on a mac or windows comupter?

No such systems around here, so that's unlikely to happen. =C2=A0I migh=
t be
able to try it one of these days on different linux USB host hardware,
we'll see.

Not sure if it has anything to do with it, but I experience 'static&#39=
; crackles on my Presonus 1818 as well.

Have to try my old laptop still, but on my new one the crackles sometimes c=
oincide (from watching tail -f) with

=C2=A0 =C2=A0 kernel: [12263.813466] usb_submit_urb: -16

in the syslog/kern.log, and an occasional

=C2=A0 =C2=A0 kernel: [12261.509328] retire_capture_urb: 2 callbacks suppre=
ssed

Do you have that as well ?

I'm on Ubuntu 13.10 / 3.11.0-15-lowlatency.

Thanks,
Kees

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Messages in current thread:
[LAU] Focusrite Scarlett 18i8, Fons Adriaensen, (Tue Jan 7, 3:10 pm)
Re: [LAU] Focusrite Scarlett 18i8, Robin Gareus, (Wed Jan 8, 4:06 am)
Re: [LAU] Focusrite Scarlett 18i8, Fons Adriaensen, (Wed Jan 8, 1:41 pm)
Re: [LAU] Focusrite Scarlett 18i8, Robin Gareus, (Wed Jan 8, 2:52 pm)
Re: [LAU] Focusrite Scarlett 18i8, Fons Adriaensen, (Wed Jan 8, 3:43 pm)
Re: [LAU] Focusrite Scarlett 18i8, Robin Gareus, (Wed Jan 8, 4:04 pm)
Re: [LAU] Focusrite Scarlett 18i8, Fons Adriaensen, (Wed Jan 8, 10:21 pm)
Re: [LAU] Focusrite Scarlett 18i8, Fons Adriaensen, (Wed Jan 8, 4:24 pm)
Re: [LAU] Focusrite Scarlett 18i8, Jeremy Jongepier, (Wed Jan 8, 8:40 am)
Re: [LAU] Focusrite Scarlett 18i8, James Stone, (Fri Jan 10, 8:42 pm)
Re: [LAU] Focusrite Scarlett 18i8, Fons Adriaensen, (Fri Jan 10, 10:20 pm)
Re: [LAU] Focusrite Scarlett 18i8, James Stone, (Fri Jan 10, 10:48 pm)
Re: [LAU] Focusrite Scarlett 18i8, Fons Adriaensen, (Fri Jan 10, 11:20 pm)
Re: [LAU] Focusrite Scarlett 18i8, James Stone, (Sat Jan 11, 10:20 am)
Re: [LAU] Focusrite Scarlett 18i8, Tim Goetze, (Wed Jan 8, 9:37 am)
Re: [LAU] Focusrite Scarlett 18i8, James Stone, (Thu Jan 9, 9:23 pm)
Re: [LAU] Focusrite 2i4, Tim Goetze, (Fri Jan 10, 10:33 am)
Re: [LAU] Focusrite 2i4, James Stone, (Fri Jan 10, 10:40 am)
Re: [LAU] Focusrite 2i4, Tim Goetze, (Mon Jan 27, 2:34 pm)
Re: [LAU] Focusrite 2i4, James Stone, (Mon Jan 27, 2:44 pm)
Re: [LAU] Focusrite 2i4, Tim Goetze, (Fri Jan 10, 11:33 am)
Re: [LAU] Focusrite 2i4, Kees van Veen, (Fri Jan 10, 4:30 pm)
Re: [LAU] Focusrite 2i4, Tim Goetze, (Mon Jan 13, 8:58 am)
Re: [LAU] Focusrite 2i4, James Stone, (Mon Jan 13, 10:49 am)
Re: [LAU] Focusrite 2i4, Tim Goetze, (Mon Jan 13, 12:25 pm)
Re: [LAU] Focusrite 2i4, James Stone, (Sat Jan 11, 7:52 pm)
Re: [LAU] Focusrite 2i4, Jeremy Jongepier, (Sat Jan 11, 10:22 pm)
Re: [LAU] Focusrite 2i4, Kees van Veen, (Sun Jan 12, 9:19 pm)
Re: [LAU] Focusrite Scarlett 18i8, James Stone, (Wed Jan 8, 10:55 am)
Re: [LAU] Focusrite 2i4, Tim Goetze, (Wed Jan 8, 12:07 pm)