Hi Robin, On Jun 27 20016 19:37, Robin Gareus wrote: > On 06/27/2016 04:42 AM, Takashi Sakamoto wrote: >> I've never used the 'freewheel' mode and I don't know exactly what it >> effects. > > jackd suspends (or pauses?) the soundcard and later resumes without > closing the device. > > Freewheeling is used for example during export or bounce processing in a > DAW: disconnect from the hardware, run as fast as possible (or as slow > as needed) to export, then re-connect to the soundcard. > > As for the actual snd_ API that jack calls when en/disabling > freewheeling these days, I don't know. To test, there's a commandline > tool `jack_freewheel [y|n]`. Thanks. As long as the idea of 'freewheel' has an accompaniment of stopping/starting PCM substreams, it's quite unsuitable to the unit which has a quirk to disappearance. Well, this is a good opportunity to see Robin. Let me report an issue of jackdbus and libffado? An user saw SIGSEGV when using jackdbus on Ubuntu 14.04, read: Re: [FFADO-user] [I'm a user and need support] Mackie Onyx 820i and module snd_dice https://sourceforge.net/p/ffado/mailman/message/35041680/ When one of libffado API, ffado_streaming_prepare returns error, the UNIX signal seems to be emit to jackdbus process. https://github.com/jackaudio/jack2/blob/ff1ed2c4524095055140370c1008a2d9cccc5645/linux/firewire/JackFFADODriver.cpp#L641 I don't know exactly the reason, but you may some ideas to solve the issue. Just for your information. Regards Takashi Sakamoto ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user