* Paul Davis <paul@xxxxxxxxxxxxxxxxxxxxx> [2015-07-31 19:12]: > the -p (port max) is an argument to the SERVER, not the backend. jack > command line syntax: > > jackd [ SERVER ARGUMENTS ] -d BACKEND [ BACKEND ARGUMENTS ] > > the -p should come before the -d. Absolutely, thank you Paul, this is so true! Rui, then qjackctl issues these parameters in the wrong sequence (and stores them to ~/.jackdrc in that way as well). I don't want to create a sourceforge account in order to be able to report this on http://sourceforge.net/p/qjackctl/tickets/?source=navbar is there something else I could be doing to help? best, P > On Fri, Jul 31, 2015 at 6:59 PM, Peter P. <peterparker@xxxxxxxxxxxx> wrote: > > Hi list, > > > > today I got some time to play around with RME's Madiface (and its > > ExpressCard) under Linux/Jack. The card uses Thomas' old hdspmixer with > > correct display and routing abilities, it's simply awesome to have 64Ins > > and 64outs on a Linux laptop! > > > > However I didn't get beyond the following weird problem: > > > > Starting PureData outputting 64 channels via jack as > > pd -jack -channels 64 > > works and connects and outputs to the Madiface's hardware outs. > > > > If I try to start other audio software (mplayer, alsaplayer) asking them > > to output to the first two jack outputs (while Pd is also using them), > > I get in qjackctl's message window > > no ports available! > > > > and in mplayer > > cannot deliver port registration request > > [JACK] not enough ports available > > Failed to initialize audio driver 'jack' > > > > and in alsaplayer > > cannot deliver port registration request > > cannot deliver port registration request > > Segmentation fault > > > > all followed by a massive xrun in qjackctls message window > > **** alsa_pcm: xrun of at least 4995.700 msecs > > > > Now if I start Pd with less outputs, for examples > > pd -jack -channels 32 > > then mplayer is perfectly able to output on the the first two hardware > > channels in parallel with Pd. > > > > The weird thing: Jackd's 'max port' argument is set to 256, and the problem persists > > also with 512 ports. > > > > Am I missing something here? > > > > Background info: > > jackd version 0.124.1 tmpdir /dev/shm protocol 25 > > > > is started via qjackctl as > > jackd -P89 -t5000 -dalsa -r44100 -p256 -n2 -D -Chw:Default -Phw:Default -i64 -o64 > > > > on kernel > > 3.14-2-rt-amd64 #1 SMP PREEMPT RT Debian 3.14.15-2 (2014-08-09) x86_64 GNU/Linux > > > > Thank you for any suggestions! > > Peter > > _______________________________________________ > > Linux-audio-user mailing list > > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > > http://lists.linuxaudio.org/listinfo/linux-audio-user _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
