John Rigg informed me about the port-max-option of Jack. So I tried running the following commands: jackd --port-max 1024 -d alsa -C madifx_record_all -P madifx_playback_all jackd -p 1024 -d alsa -C madifx_record_all -P madifx_playback_all jackd -p1024 -d alsa -C madifx_record_all -P madifx_playback_all I also tried ommiting either the option of -C or of -P. But I keep getting the same error: jackd: ../linux/alsa/JackAlsaDriver.cpp:122: virtual int Jack::JackAlsaDriver::Attach(): Assertion `fCaptureChannels < 256' failed. So does that mean jackd doesn't recognize the parameter -p 1024? 2017-01-31 20:31 GMT+01:00 John Rigg <aldev2@xxxxxxxxxxx>: > On Tue, Jan 31, 2017 at 06:18:48PM +0100, Jörg Müller wrote: >> I applied the patch to my system and it fixed the error! >> >> However, I get the following error which seems to be caused by a code >> not being able to handle more than 256 channels: >> > wfs@wfs16:~$ jackd -R -d alsa -C madifx_record_all -P madifx_playback_all >> > jackdmp 1.9.10 >> > Copyright 2001-2005 Paul Davis and others. >> > Copyright 2004-2014 Grame. >> > jackdmp comes with ABSOLUTELY NO WARRANTY >> > This is free software, and you are welcome to redistribute it >> > under certain conditions; see the file COPYING for details >> > no message buffer overruns >> > no message buffer overruns >> > no message buffer overruns >> > JACK server starting in realtime mode with priority 10 >> > self-connect-mode is "Don't restrict self connect requests" >> > audio_reservation_init >> > Acquire audio card Audio0 >> > creating alsa driver ... madifx_playback_all|madifx_record_all|1024|2|48000|0|0|nomon|swmeter|-|32bit >> > configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 2 periods >> > ALSA: final selected sample format for capture: 32bit float little-endian >> > ALSA: use 8 periods for capture >> > ALSA: final selected sample format for playback: 32bit float little-endian >> > ALSA: use 8 periods for playback >> > jackd: ../linux/alsa/JackAlsaDriver.cpp:122: virtual int Jack::JackAlsaDriver::Attach(): Assertion `fCaptureChannels < 256' failed. >> > Aborted (core dumped) >> >> What could be the problem here? > > jackd only allows 256 ports maximum by default. Try using -p option > to increase it, eg. to 512: > > jackd -R -p512 -d alsa....etc > > BTW you don't need to specify -R on recent jackd versions as it's > realtime by default (use -r if you don't want realtime). > > John _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
