Re: [Jack-Devel] USB MIDI keyboard Akai LPK, jackd

Hello Jeremy,

Everything works great now, thank you very very much.

Best,
Łukasz

2014-11-03 9:54 GMT+01:00 Jeremy Jongepier <[hidden]>:

> On 11/03/2014 08:36 AM, Łukasz Kidziński wrote:
> > I got Akai LPK25 and I am trying to make it working on my Ubuntu. I tried
> > to follow a tutorial
> >
> http://terokarvinen.com/2014/usb-midi-keyboard-on-linux-akai-lpk25-professional
> .
> > I have no knowledge about jack and other applications involed so let me
> > write everything since I don't know where to look for the problem. I
> posted
> > the problem here
> > http://askubuntu.com/questions/544672/usb-midi-keyboard-akai-lpk-jackd
> and
> > they suggested to aks you here.
> >
> > When I run
> >
> >     zynjacku &
> >
>
> Hello Łukasz,
>
> zynjacky is hopelessly outdated and you don't need it to set up your
> LPK25. Also you don't aconnectgui.
>
> This is what I would do to get things going:
> - Connect your LPK25
> - Install necessary software: apt-get install jackd qjackctl zynaddsubfx
> - Start QjackCtl and set it up for your soundcard, some googling should
> get you started
> - Start ZynAddSubFX and make the connections in the Audio tab from the
> Zyn output ports to your playback ports.
> - Do the same for MIDI, connect your LPK25 output to the Zyn input in
> the ALSA tab of the QjackCTL Connections window.
>
> That should do the trick, if not, shoot!
>
> > I get errors
> >
> >     Cannot connect to server socket err = No such file or directory
> >     Cannot connect to server request channel
> >     jack server is not running or cannot be started
> >     Failed to connect to JACK.
> >     Failed to initialize zynjacku engine
> >
> > I figured I may need to run the jackd server first so I installed it and
> ran
> >
> >     jackd -sRp 70 -d alsa -d hw:1 -r 44100 -H -z s
> >
>
> jackd -s is not necessary in most cases. -R (real-time mode) is a
> default option so not necessary. -p 70 sets JACK to use 70 ports, you
> probably mean -P 70, to set JACK's priority to 70. Afaik -H is only used
> if your soundcard supports hardware monitoring. What soundcard are you
> using? You also don't need to set dithering (-z s), the default setting
> should be just fine.
>
> > but I still can't make zynjacku running and get
> >
> >     flex scanner jammed
> >
> > If I run zynaddsubfx and aconnectgui I manage to get signal from the
> > keyboard (the indicator at the bottom gets blue) but I can't hear
> anythnig.
> >
> > I tried to manually send some signal to jackd by `ecasound` and it
> reaches
> > the jackd server but again I can't hear any sound.
> >
> > I have totally no experience with jackd so that's why my trials are that
> > random. Thanks in advance for your help.
> >
> > If I run `jackd -sRp 70 -d alsa -d hw:1 -r 44100 -H -z s`, I get
> >
> >     no message buffer overruns
> >     JACK server starting in realtime mode with priority 10
> >     audio_reservation_init
> >     Acquire audio card Audio0
> >     creating alsa driver ...
> > hw:0|hw:0|1024|2|44100|0|0|hwmon|swmeter|-|32bit
> >     Failed to open server
> >
>
> Try raising the verbosity of JACK by adding -v:
>
> jackd -v -P 70 -d alsa -d hw:1 -r 44100
>
> > Thank you very much in advance,
> >
> > Best,
> > Łukasz Kidziński
>
> Best,
>
> Jeremy
>
>
> 
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>
>

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