The  only advantage I see for PW, is that I can have 2 USB (18i20) audio interface , USB camera mics and connect them all together. That worked.
But I had to use lot of latency and hardly can prevent XRUNS. For conusmer audio it seems nice, not for DAWs and low latency.
I will try Ubutnu 22.10 later on.

When I talked to PW devs, they mentions it does not replace ALSA, since ALSA are the low lever device drivers. though it hooks into ASLA timer for timing synchronization
It does however provide a JACK and Pulseaudio replacement.

Thanks

-----Original Message-----
From: Stephan Auerochs <stephan.auerochs@bosurus.de>
To: jackaudio@lists.linuxaudio.org
Subject: Re: [Jackaudio] Distorted sound after upgrade to Kubuntu 22.10
Date: Mon, 30 Jan 2023 20:08:18 +0100

Hello,

I'm running Siduction (Linux), so I can't speak especially for Ubuntu.

I'm using a DAW within a virtual machine (QEMU/KVM), connecting audio with jack-net to the Siduction host, where jackd  (jack daemon) is running.
After Siduction introduced Pipewire years ago, my experience was that Pipewire grabs all (USB) ALSA devices, preventing jackd from accessing them directly. Pipewire only offers a jack API for jack clients, but it couldn't work with the jack-net client. My configuration was not working anymore, because jackd (and qjackctrl) was not involved anymore.

So I decided  to deinstall pipewire on the Siduction host, and run jackd as the main sound server again; within qjackctrl I configured jackd to access my Focusrite 8i6 directly. Additionally I installed pulseaudio-jack for non-jack-capable applications (alternative is  to run pipewire on top of jackd, but I have not tried).
This works still as my low latency, distortion-free audio solution.

Not sure what the advantages of pipewire are; seems to aim on a multimedia (video?) all-in-one solution, but as far as it is not network capable it's useless for me. Also I'm not sure if the Pipewire team sets high priority on the jack API in the future.

If jackd is still available on Ubuntu, deinstallation of Pipewire may be a (radical) solution.

Regards



On 30.01.23 16:39, Happy wrote:

Hello.

Have you tried to changed the settings in qjackctrl, like buffer size and such ?
Ubuntu is transitioning to Pipewire , artialy in 22.04 and full in 22.10.
Pipewire replaces the legacy jack (emulation)  
Maybe it is a reason  maybe not.

I am, very worried to change to 22.10. my focusrite 18i20 Gen 1 suddenly has started to get many XRUN after 8 yeats w/o changing the hardware.
But it seems many people are happy with Pipewire. (even it may not have tested much with externa hardware)
One of the reason I have not transisition to 22.10 from 22.04
Perhaps you can post on https://linuxmusicians.com/viewforum.php?f=6&sid=d4592ee0b470220fdb6dfd188d0706c5 to find solutions.

Thanks

-----Original Message-----
From: Ulrich Grün <ulrich.gruen@gmail.com>
To: jackaudio@lists.linuxaudio.org
Subject: [Jackaudio] Distorted sound after upgrade to Kubuntu 22.10
Date: Tue, 3 Jan 2023 12:44:52 +0100

Dear list members,

I'm quite new to Jack and just subscribed to this mailing list.

First, let me say a warm Hello to everyone!

Now to my problem.
Since I upgraded Kubuntu 20.04 LTS to 22.04 (and also to 22.10), the sound I hear is distorted. Even when the sound source is very quiet, the sound is distorted. As if somewhere, the input signal is way too high.
I tried a few different settings in the Jack Audio Connection Kit, at no avail.

Of course, I did ample research at Brother Google and found seemingly similar problems. The advice that was given there, was either not applicable to my situation, or was far beyond my skills to actually digg that far into my Linux OS (I'm a chemistry teacher at a Dutch high school, not an IT professional ;-).

Thus made me decide to ask for help here!

My soundcard is a Focusrite Scarlett 2i2, The version of the software is the following:
jackd: 5+nmu1; jackd2 & libjack-jackd2-0: 1.9.21; qjackctl: 0.9.7-1

Below that is the output of the Messages in QjackCtl. Maybe and hopefully, that some skilled eye finds some occurring error ...

Thanks in advance !!!


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