[LAU] sound with Scarlett 3rd Gen device?
mott
mott at escuta.org
Sun Feb 2 19:03:14 CET 2020
In the end I took your lead and installed Linux Mint and then
installed the "Fully Preemptible" real-time kernel with
instructions from here:
https://hungpham2511.github.io/setup/install-rtlinux/
Note, if anyone tried this, in the more recent patched kernel
that I configured, the "Fully Preemptible Kernel (Real-Time)" item
in the config was not found in the "Processor type and feature" menu
but in "General setup".
With this I got the Pd test patch running glitch free with jack
configs of: 48kHz, 64 frames/period, 2 periods/buff and a latency
of 2.67sec.
Cheers,
On 1/31/20 11:30 AM, Christoph Kuhr
wrote:
Hi Iain,
I always build my OS on top of linux mint. 18.3 at the moment
working with the babyface.
But I also build all the software that I need by myself.
BR,
Ck
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gesendet.
Am 31.01.20, 11:05 schrieb Iain Mott
<mott at escuta.org>:
Hi Christoph and list, reporting back: It seems the
problems, particularly on the laptop, are related to Ubuntu.
Last night I made a live USB stick of AV Linux. Booting from
this both solves the problem of the USB ports and produces
glitch free audio (thus far). I got ins and outs working
with Pd + jack with frames/period set to 64, sample rate
48hHz, and periods/buffer 3. Latency of 4msec, so I'm happy
with that (Pd gave segmentation faults on startup at lower
frame rates). The Pd test (playing a tone and monitoring mic
input) did much better than it did on Windows
(portaudio/asio) where I still heard occasional glitches
(don't remember the latency value).
Christoph and others using the Scarlett, what Linux
distributions are you using?
>Is is USB Class compliant or does it come with specific
hardware features?
>If it does, maybe you can switch from "special" to
"compliant" mode?
I believe it is class compliant except for configuration
process. How would one "switch from special to compliant"?
I've heard of people having success using Wine to run
Focusrite Control, so I'll try this too.
All the best,
Iain
Em 31/01/2020 04:10, Christoph
Kuhr escreveu:
Hi Iain,
no, I don't have a gen3.
Is is USB Class compliant or does it come with specific
hardware features?
This worked for my RME babyface pro though.
Hope this helps...
Best
Ck
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WEB.DE
Mail gesendet.
Am 30.01.20, 11:47 schrieb Iain Mott <mott at escuta.org>:
Hi Christoph, I don't doubt for a minute that I'm
doing something silly, but do you mean the monitor and
headphone gain knobs on the front? Yes, they're both
up. When I switch directly to windows, everything is
working: pd (ASIO driver "via portaudio"),
SuperCollider, Ardour, etc., but in Linux, silence....
You have a 3rd gen interface?
Cheers,
Iain
Em 30/01/2020 07:26,
Christoph Kuhr escreveu:
Hi Iain,
did you turn up the hardware volume?
I had this problem. Someone truly evil turned it
down, while I wasn't watching... ;-)
BR,
Ck
--
Diese Nachricht wurde von meinem Android
Mobiltelefon mit WEB.DE Mail gesendet.
Am 30.01.20, 10:24 schrieb Iain
Mott <mott at escuta.org>:
Dear Linux audio
people,
I have a Scarlett 18i20 3rd Gen interface which
I'm trying to use on a
recent Samsung laptop with Ubuntu 19.04.
The 3rd gen devices are apparently shipped in
non-functional "MSD" mode,
so I registered and activated the device using
Windows 10 following the
instructions on the Focusrite website. Tested it
there with Ableton Live
Lite (provided via registration of the device) and
also Ardour. It works
fine. To get it to work on Ardour it was necessary
to use the ASIO
driver in the Ardour audio configuration. I had
removed ASIO4ALL before
installing the Focusrite/Scarlett software as
suggested, so perhaps this
driver came with Focusrite install.
Now with the device apparently configured and the
routing done in
Windows using the Focusrite Control software (i
thinks that's the name,
I had selected output channels 1 and 2 to connect
with the
monitors/headphone jack), I returned to Linux. The
Scarlett device is
detected by lsusb, qjackctl and pavucontrol. Jack
runs with no errors
when the Scarlett is selected as the i/o device
and all the correct
channels appear in the Connect window. No sound
however is heard through
the phone jack, nor if i plug the phones directly
in to the output jacks
at the back. I tested using VLC configured for
Jack output and also with
pd -jack.
With jack turned off and with VLC audio out set to
pulsaudio, I set the
Scarlett 18i20 as the preferred device in
pavucontrol. With VLC playing
the output VU meter for the Scarlett is active in
pavucontrol but there
is still no sound coming out of the device itself.
Has anyone managed to get a 3rd generation
Scarlett to work on Linux?
Can anyone suggest please what I can do?
Thanks!
Iain
PS. i did see an unresolved thread on this list
last year about a 3rd
gen Scarlett. I'll send a message to the author to
see if the problem
was fixed.
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