[LAU] sound with Scarlett 3rd Gen device?
Iain Mott
mott at escuta.org
Thu Feb 20 12:31:24 CET 2020
While I got the Scarlett to run well on a Samsung laptop, I've not been
able to get rid of the glitches on a desktop with the same
system/kernel. I've just posted a question on stack overflow after
attempting to make adjustments to the real time clock. If anyone might
be able to help, please see:
https://stackoverflow.com/q/60318588/1602842?sem=2
Cheers,
Iain
On 2/2/20 3:03 PM, mott wrote:
>
> 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
>> --
>> Diese Nachricht wurde von meinem Android Mobiltelefon mit WEB.DE
>> <http://WEB.DE> Mail 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
>> --
>> Diese Nachricht wurde von meinem Android Mobiltelefon mit
>> WEB.DE <http://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 <http://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.
>> _______________________________________________
>> Linux-audio-user mailing list
>> Linux-audio-user at lists.linuxaudio.org
>> https://lists.linuxaudio.org/listinfo/linux-audio-user
>>
>>
>
> _______________________________________________
> Linux-audio-user mailing list
> Linux-audio-user at lists.linuxaudio.org
> https://lists.linuxaudio.org/listinfo/linux-audio-user
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.linuxaudio.org/archives/linux-audio-user/attachments/20200220/0182cc38/attachment.html>
More information about the Linux-audio-user
mailing list