Re: [LAU] Ardour session with plain ALSA, without JACK

On Fri, 19 Feb 2016 22:50:14 +0100, Robin Gareus wrote: I didn't configure anything. Only one sound card is available and it's initialized by running hdspmixer: [rocketmouse@archlinux ~]$ amidi -l;aplay -l;arecord -l Dir Device Name IO hw:0,0 HDSPMx579bcc MIDI 1 **** List of PLAYBACK Hardware Devices **** card 0: HDSPMx579bcc [RME AIO_579bcc], device 0: RME AIO [RME AIO] Subdevices: 1/1 Subdevice #0: subdevice #0 **** List of CAPTURE Hardware Devices **** card 0: HDSPMx579bcc [RME AIO_579bcc], device 0: RME AIO [RME AIO] Subdevices: 1/1 Subdevice #0: subdevice #0 [rocketmouse@archlinux ~]$ hdspmixer HDSPMixer 1.11 - Copyright (C) 2003 Thomas Charbonnel <thomas(a)undata.org> This program comes with ABSOLUTELY NO WARRANTY HDSPMixer is free software, see the file COPYING for details Looking for RME cards: Card 0: RME AIO S/N 0x579bcc at 0xfdff0000, irq 18 RME AIO found! 1 RME cards card found. Restoring last presets used 2 Nothing but Ardour is used, no command line, no QjackCtl etc., the Ardour GUI claims "Buffer size: 1024 samples/Periods: 2", if I chose ALSA or JACK. There are no issues for this card, excepted of xruns and that just 2 of 8 ADAT channels provide a signal by jackd ports (I guess in the past I have repeated this often enough ;). The card is not broken, it was tested with FreeBSD and Windows on the same machine. This is the .jackdrc generated by Ardour: [rocketmouse@archlinux ~]$ cat .jackdrc /usr/bin/jackd -t 200 -p 2048 -R -T -d alsa -n 2 -r 44100 -p 1024 -d hw:HDSPMx579bcc,0 -X raw This is how it looks if I use command line: [rocketmouse@archlinux ~]$ jackd -dalsa -dhw:0 -r44100 -p1024 -n2 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 ... hw:0|hw:0|1024|2|44100|0|0|nomon|swmeter|-|32bit configuring for 44100Hz, period = 1024 frames (23.2 ms), buffer = 2 periods ALSA: final selected sample format for capture: 32bit integer little-endian ALSA: use 16 periods for capture ALSA: final selected sample format for playback: 32bit integer little-endian ALSA: use 16 periods for playback ^CJack main caught signal 2 Released audio card Audio0 audio_reservation_finish Usually I use 48KHz p256 n2: [rocketmouse@archlinux ~]$ jackd -dalsa -dhw:0 -r48000 -p256 -n2 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 ... hw:0|hw:0|256|2|48000|0|0|nomon|swmeter|-|32bit configuring for 48000Hz, period = 256 frames (5.3 ms), buffer = 2 periods ALSA: final selected sample format for capture: 32bit integer little-endian ALSA: use 64 periods for capture ALSA: final selected sample format for playback: 32bit integer little-endian ALSA: use 64 periods for playback ^CJack main caught signal 2 Released audio card Audio0 audio_reservation_finish