8 Jul
2018
8 Jul
'18
7:55 a.m.
Le Sat, 7 Jul 2018 17:27:48 +0000,
Dale Powell <dj_kaza(a)hotmail.com> a écrit :
Moved the config file to generate a new one and for
now it seems to
be working, correctly stopping and saved a new config for both
internal and external. Strange as this hasn't been touched by me for
at least a month, if not more like two, and was definitely working
just two weeks ago when I had a gig. Oh well, thanks for all your
help and I really should have tried that as the first step!
Using gentoo, jackdbus and qjackctl from their source repositories, I
noticed than when updating jack, qjackctl can loose control on jack
if I don't update it at the same time. I also noticed than, to update
both software at the same time is not always enough for qjackctl to
keep control over jack. In that case, the only cure is to remove all the
jack/qjackctl config files in $HOME. It would be great if qjackctl
could be able to do that by itself.
Best,
Dominique
________________________________ From:
Linux-audio-user
<linux-audio-user-bounces(a)lists.linuxaudio.org> on behalf of Dale
Powell <dj_kaza(a)hotmail.com> Sent: 07 July 2018 17:10 To:
linux-audio-user Subject: Re: [LAU] Ubuntu 18.04 can't stop Jack from
qjackctl
Installed and tested with Cadence and it works perfectly as expected.
Issue only exists with qjackctl. Maybe I should just make the
switch....
Except how do I switch audio device in Cadence? Device/Interface is
greyed out even with Jack stopped. Plus it doesn't seem to let me
save the configs for quick loading and latency etc is also different
as they can handle different settings without xruns. Surely Cadence
is able to do this too??
Dale.
________________________________
From: Linux-audio-user
<linux-audio-user-bounces(a)lists.linuxaudio.org> on behalf of Dale
Powell <dj_kaza(a)hotmail.com> Sent: 07 July 2018 16:39 To: Len Ovens;
linux-audio-user Subject: Re: [LAU] Ubuntu 18.04 can't stop Jack from
qjackctl
"The problem (feature) with the debian jackd2 install of both jackd
and jackdbus, is that if jack is not running and the user starts an
application looking for jack, it will start jackd for them by default.
then qjackctl will not be able to run jackdbus as normal."
I have qjackctl as one of my Startup Applications, starts minimised
to Tray but is always running well before I could even consider
opening an audio application so this definitely isn't my issues. I've
always worked like this.
I didn't think you could change devices, or generally get any of the
Settings you change to take affect, without Stopping and Starting the
Jack Server again. Not actually really tested it though. I have two
saved configs, one for my internal audio, one for my external
interface. I'd usually - Stop, open Settings, select other Config,
OK, Start - and everything would be good. Now it hangs when I hit
Stop, or if it doesn't and looks to have stopped I don't believe it
really has as I did a test and still got unbroken sound, which I know
usually dies if I Stop Jack while something is playing through it.
I've tried with the d-bus settings both enabled and disabled with no
overall joy but have to admit I've always been confused into exactly
what affect these really have on the system....
Dale.
________________________________
From: Linux-audio-user
<linux-audio-user-bounces(a)lists.linuxaudio.org> on behalf of Len
Ovens <len(a)ovenwerks.net> Sent: 07 July 2018 16:32 To:
linux-audio-user Subject: Re: [LAU] Ubuntu 18.04 can't stop Jack from
qjackctl
On Sat, 7 Jul 2018, Dale Powell wrote:
--
If you have a problem and you are not doing anything to fix it, you are
at the heart of the problem.
Thanks for pointing out jack_control, I should
have searched that
first rather than brute forcing it with the ugly commands I know.
jackdbus, as I understand things, if a wrapper around jackd. It is
however, very tightly coupled because it can do things like change the
master device or sample rate (don't do that) without stopping jack.
It may be that qjackctl is using this ability when you change
devices. I have found that I can plugin a USB device and switch
master to that device without stopping jack and most connections
(except to system*) stay connetced and the clients don't notice
anything. However that only seems to work once, trying to switch
master twice (back to internal so I can pull the plug) seems to
freeze jackdbus.
certainly pulling the plug while jack is using a USB device has always
been a problem for me though I know of others who have been able
change master even after unplugging the device.
I do not recall having this problem in the past. Something to look at
in the code to see what is different from jackd 1.9.11 and 1.9.12.
package, not something that has always been like
this on 18.04 for
me. When did you last do an apt upgrade?
apt update shows: "All packages are up to date."
--
Len Ovens
www.ovenwerks.net<http://www.ovenwerks.net>
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