No sound, then noise [Solved]

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Mister Mint
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No sound, then noise [Solved]

Post by Mister Mint »

Hello LM,

I have installed three DAWs: Audacity, Qtractor, and Ardour, but it's only Audacity I can get sound from, and only when I choose Alsa. With Ardour I got a setup window with options first time I started it, where I among other things could choose between Jack and Alsa. I chose Jack, and as said, there's no sound, even though both the meter of the track with audio and the master track meter shows activity. I also start Qjackctl before Ardour, and the connections look like this:
Skærmbillede på 2018-04-28 02-19-47.png
Skærmbillede på 2018-04-28 02-19-47.png (90.93 KiB) Viewed 895 times
and as input and output device I have my M Audio soundcard:
Skærmbillede på 2018-04-28 01-17-15.png
Skærmbillede på 2018-04-28 01-17-15.png (87.18 KiB) Viewed 895 times
Maybe I should have chosen Alsa in the setup window the first time. I've tried so, but it doesn't appear again with a new session, and not even after I un-install and re-install Ardour.

In Qtractor I see no Alsa/Jack option. Otherwise it's the same: no sound although the meters are active, and I have clicked the monitor buttons in the mixer. And here's the connections:
Skærmbillede på 2018-04-28 03-26-24.png
Skærmbillede på 2018-04-28 03-26-24.png (39.77 KiB) Viewed 895 times
It has worked before, both Ardour and Qtractor, but for some reason not now. I use Linux Mint 17.1.

Anyone know what's wrong?
Last edited by Mister Mint on Tue May 01, 2018 9:19 pm, edited 2 times in total.
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lilith
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Re: No sound

Post by lilith »

Can you try starting jack from a terminal to see if there's something wrong? The connections look fine imo.
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Re: No sound

Post by Mister Mint »

It seems to work ok. I get this:

tl@tl-P5Q-SE ~ $ qjackctl&
[1] 1057

and the Qjackctl windows opens.
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Re: No sound

Post by Mister Mint »

Hi again, now I get sound in Ardour. I imported an audio clip and it plays ok, but when I'm not playing it, there's a hell lot of electronic "white" noise :?

Same in Qtractor, except that here there's noise all the time after importing an audio clip, but only in the one speaker.

In Audacity I get sound okay now, when choosing Jack. Apparantly Jack wasn't running correctly in the first place, so maybe starting it from a terminal has put something right. Thanks for suggesting it.

Now it's just the noise in Ardour and Qtractor, that is strange.
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Re: First no sound, then sound + noise

Post by rghvdberg »

I see the capture (mic or line in) directly connected to the system playback, that's probably where the noise comes from.
Capture should only be connected to the 'In' ports, like "Master In" in Qtractor
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Re: First no sound, then sound + noise

Post by Mister Mint »

Oh, thanks for this :) And I see that a capture also has to be disconnected if it's not used. When I disconnected Capture 1 from Master/in 1, the noise in the left speaker disappeared.
Skærmbillede på 2018-05-01 22-58-08.png
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Fluffel
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Re: No sound, then noise [Solved]

Post by Fluffel »

Hello everyone!

I have the same problem with qtractor on Arch Linux.
After a long installation process I finally got qtractor to work, with jack and qsynth in the background.

I think that the connection should be fine, because in the master in and out it shows that there is an input/output. Also, when I look at the qsynth it shows a rhythmical green signal from the metronome, as it should. However, there is, as I said, no sound whatsoever.
qsynth.png
qsynth.png (56.84 KiB) Viewed 829 times
qtractor.png
qtractor.png (98.38 KiB) Viewed 829 times
I played around a little trying to figure out some more; I found out that as long as qtractor is running, even other sources like youtube can't play sound. Videos would load but just stop and "play" didn't work, because there was no sound. Maybe this usual for qtractor, but I found it rather suspicious for some weird bug or so.

Is there anything I'm missing to make it work?
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