Re: [Denemo-devel] Newbie getting MIDI K/B to work with ALSA and qjackctl

[Éloi Rivard]

Edgar,

I pushed a commit some weeks ago about porttime and portmidi detection in autotools. What is your problem exactly ?

2014/1/18 Edgar Aichinger <address@hidden>

Am Sonntag, 19. Januar 2014, 02:35:46 schrieb Philip Rhoades:

> Richard,
>
>
> On 2014-01-19 01:47, Richard Shann wrote:
> > On Sun, 2014-01-19 at 01:15 +1100, Philip Rhoades wrote:
> >> >
> >> > In the Edit->Change Preference->Audio/MIDI tab under MIDI Backend,
> >> > Input
> >> > Device. The MIDI backend should be PortMidi and you device should
> >> > appear
> >> > under the drop down menu for Input Device.
> >>
> >>
> >> Under that drop down menu I have:
> >>
> >>    ALSA
> >>    JACK
> >>    none
> >>
> >>
> >> > I think this is the first thing to establish - is your device
> >> showing
> >> > up
> >> > in that drop down menu? (Clean, freshly booted machine with device
> >> > plugged in).
> >>
> >>
> >> Doesn't look like it - no sign of PortMidi - there is only
> >> "PortAudio"
> >> in the Audio Backend.  I installed portmidi-tools and ran pmdefaults:
> >> when I select the keyboard as input I can see responses on the
> >> virtual
> >> LED when I press keys (but I knew this was working anyway - it is
> >> only
> >> getting the input into Denemo that is a problem).
> >
> > There are two panels, one Audio Backend then below it MIDI backend.
> > I think perhaps you looked under the Input Device of the Audio Backend.
>
>
> No, the second panel has:
>
>    Audio Backend
>      PortAudio
>      JACK
>      none
>
>    Output Device
>      Lots of ALSA devices
>
> the third panel has:
>
>    MIDI Backend
>      ALSA
>      JACK
>      none
>
>
> > But this already shows a difference from what I see - you have no
> > PortAudio option (which I have) and you *do* have ALSA and JACK options
> > which I don't have.
>
>
> Hmmm . .
>
>
> > I don't know too much about it, but my guess is that this isn't the
> > plain vanilla build but one with JACK and ALSA enabled and PortAudio
> > disabled. IIRC it is Edgar Aichinger who builds for Fedora.

I do build for Fedora, but only since mid of December when I incorporated the changes Jeremiah had made to my spec file about 2 months ago (see thread "Help needed" from December), and that's what Philip is using if I remember right.
Anyway I just checked, and it's true, my build excludes portmidi, because for some reason I still have to investigate, -lportmidi isn't found wt link time. I'll look into that as soon as possible, perhaps tonight.

But, I also tried to connect my MIDI keyboard to denemo using the ALSA backend, and it worked well, the only irritation was thatALSA backend was already set, but didn't show in qjackctl's ALSA tab until I selected it again, and hit OK in that dialog...

Edgar

> > You could try the binary - this you can install without root
> > permissions
> >  http://denemo.org/downloads/denemo-1.1.0-0.linux-x86
> >
> > I'm not able to run this myself, but I believe it works fine on other
> > distros.
>
>
> OK but there is another issue now - when I boot with the MIDI K/B
> plugged in, it seems to rearrange the audio cards on the computer or
> something because then I can't produce any sound at all!  If I plug the
> K/B in after booting, I  still have sound and can at least get life out
> of the K/B for other things - just not for use as input to Denemo . .
>
> In any case, it is a pain having to reboot the server all the time - I
> will try the same exercise on a laptop, which has the same OS on it but
> of course doesn't have all the stuff connected to it that the server
> does . . anyway, I'll check out your link and see if that helps at all.
>
> Thanks for the help!
>
> Regards,
>
> Phil.
>

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Éloi Rivard - address@hidden
       
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