Re: [Denemo-devel] Denemo fails to start

[Andreas Schneider]

Thank you for your hints.

I tried to compile 1.1.2, but it fails in sourceaudio.c. I remember that
this had something to do with the libaubio version, but my Linux
distribution does not provide libaubio3.

So I tried to delete the three lines
    <portaudio_device>ALSA: USB Audio DAC: - (hw:2,0)</portaudio_device>
    <portaudio_sample_rate>44100</portaudio_sample_rate>
    <portaudio_period_size>256</portaudio_period_size>
from my .denemo-1.1.9/denemorc, and it solved the problem. Denemo did
start up again after that. But the program should not crash when a
selected audio device is busy or not available.

Andreas


Am 03.10.2014 um 11:23 schrieb Richard Shann:
> I think it would be very useful to check that this is due to your new
> hardware and not due to any recent changes in Denemo.
> Can you experiment with, say, Denemo 1.1.2 or whatever?
> The only recent change that could be relevant is to the mutex unlocks,
> and I see some messages about that. However, my suspicion is that what
> you have uncovered is that Denemo does not handle preferences for
> hardware well - assuming that earlier versions of Denemo behave the same
> as current master then it will be useful to keep a record of what
> preferences for audio and midi are being stored
> in .denemo-1.1.9/denemorc
> to do this, instead of removing the entire .denemo-1.1.9 tree, just
> remove individual lines in denemorc - you can delete any line e.g.
> 
>     <audio_driver>portaudio</audio_driver>
>     <midi_driver>portmidi</midi_driver>
> ...
>     <portaudio_device>ALSA: default</portaudio_device>
>     <portaudio_sample_rate>44100</portaudio_sample_rate>
>     <portaudio_period_size>256</portaudio_period_size>
>     ...
>     <portmidi_input_device>ALSA: USB Keystation 49e MIDI 
> 1</portmidi_input_device>
>     <portmidi_output_device>default</portmidi_output_device>
> 
> if you can identify which one(s) prevent startup, and what they get
> replaced with on successful startup that could well pinpoint the
> problem. I notice there is a preference     
> <startmidiin>1</startmidiin>
> which presumably relates to automatically trying to connect to a midi
> controller - I guess without it you could change preferences first and
> then start MIDI in. There is a drop down list of MIDI controllers to
> choose from in the preferences...
> 
> I often see a problem with exiting Denemo - it hangs in something called
> pthread_join, and I (always) have a problem if I have left Denemo
> running while the machine is suspended - Denemo works fine but the MIDI
> hardware has ceased to be connected properly and portmidi hangs on
> exiting Denemo.
> 
> HTH
> 
> Richard