Hi, when I try (on Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-======================================-========================-========================-================================================================================== ii jackd2 1.9.10+20150825git1ed50c amd64 JACK Audio Connection Kit (server and example clients) ) the command jackd -d firewire -X alsaraw -r 96000 -p 512 I get the following output (the start is not all that interesting): jackdmp 1.9.11 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" 1505250482905708: (ffado.cpp)[ 92] ffado_streaming_init: libffado 2.3.0- built Aug 12 2016 08:47:17 00245641440: Warning (dice_eap.cpp)[ 115] init: no EAP mixer (device does not support EAP) 00245641530: (dice_avdevice.cpp)[ 713] showDevice: DICE Parameter Space info: 00245641627: (dice_avdevice.cpp)[ 714] showDevice: Global : offset=0x0028 size=0360 00245641650: (dice_avdevice.cpp)[ 715] showDevice: TX : offset=0x0190 size=0568 00245641658: (dice_avdevice.cpp)[ 716] showDevice: nb= 2 size=0280 00245641671: (dice_avdevice.cpp)[ 717] showDevice: RX : offset=0x03C8 size=1128 00245641678: (dice_avdevice.cpp)[ 718] showDevice: nb= 1 size=0280 00245641689: (dice_avdevice.cpp)[ 719] showDevice: UNUSED1 : offset=0x0000 size=0000 00245641696: (dice_avdevice.cpp)[ 720] showDevice: UNUSED2 : offset=0x0000 size=0000 00245641706: (dice_avdevice.cpp)[ 722] showDevice: Global param space: 00245648092: (dice_avdevice.cpp)[ 725] showDevice: Owner : 0x00000000FFFF0000 00245653331: (dice_avdevice.cpp)[ 728] showDevice: Notification : 0x00000020 00245663787: (dice_avdevice.cpp)[ 731] showDevice: Nick name : iO 14 00245669859: (dice_avdevice.cpp)[ 735] showDevice: Clock Select : 0x04 0x0C 00245675606: (dice_avdevice.cpp)[ 739] showDevice: Enable : false 00245681508: (dice_avdevice.cpp)[ 743] showDevice: Clock Status : locked 0x04 00245688523: (dice_avdevice.cpp)[ 746] showDevice: Extended Status : 0x00000000 00245695403: (dice_avdevice.cpp)[ 749] showDevice: Samplerate : 0x00017700 (96000) 00245700433: (dice_avdevice.cpp)[ 752] showDevice: Version : 0x01000400 00245705069: (dice_avdevice.cpp)[ 761] showDevice: Version : 0x01000400 (1.0.4.0) 00245710923: (dice_avdevice.cpp)[ 764] showDevice: Clock caps : 0x1121007E 00245719370: (dice_avdevice.cpp)[ 767] showDevice: Clock sources : 00245719394: (dice_avdevice.cpp)[ 773] showDevice: SPDIF 00245719432: (dice_avdevice.cpp)[ 773] showDevice: unused 00245719448: (dice_avdevice.cpp)[ 773] showDevice: unused 00245719469: (dice_avdevice.cpp)[ 773] showDevice: unused 00245719484: (dice_avdevice.cpp)[ 773] showDevice: unused 00245719504: (dice_avdevice.cpp)[ 773] showDevice: ADAT 00245719520: (dice_avdevice.cpp)[ 773] showDevice: unused 00245719539: (dice_avdevice.cpp)[ 773] showDevice: unused 00245719554: (dice_avdevice.cpp)[ 773] showDevice: Firewire 00245719574: (dice_avdevice.cpp)[ 773] showDevice: unused 00245719589: (dice_avdevice.cpp)[ 773] showDevice: unused 00245719607: (dice_avdevice.cpp)[ 773] showDevice: unused 00245719623: (dice_avdevice.cpp)[ 773] showDevice: INTERNAL 00245719643: (dice_avdevice.cpp)[ 776] showDevice: TX param space: 00245719658: (dice_avdevice.cpp)[ 777] showDevice: Nb of xmit : 2 00245719680: (dice_avdevice.cpp)[ 779] showDevice: Transmitter 0: 00245725359: (dice_avdevice.cpp)[ 782] showDevice: ISO channel : -1 00245732416: (dice_avdevice.cpp)[ 784] showDevice: ISO speed : 2 00245738802: (dice_avdevice.cpp)[ 787] showDevice: Nb audio channels : 6 00245743550: (dice_avdevice.cpp)[ 789] showDevice: Nb midi channels : 1 00245749373: (dice_avdevice.cpp)[ 792] showDevice: AC3 caps : 0x00000000 00245753967: (dice_avdevice.cpp)[ 794] showDevice: AC3 enable : 0x00000000 00245761348: (dice_avdevice.cpp)[ 797] showDevice: Channel names : 00245761403: (dice_avdevice.cpp)[ 802] showDevice: Line 1 00245761423: (dice_avdevice.cpp)[ 802] showDevice: Line 2 00245761448: (dice_avdevice.cpp)[ 802] showDevice: Line 3 00245761466: (dice_avdevice.cpp)[ 802] showDevice: Line 4 00245761489: (dice_avdevice.cpp)[ 802] showDevice: SPDIF L 00245761506: (dice_avdevice.cpp)[ 802] showDevice: SPDIF R 00245761530: (dice_avdevice.cpp)[ 779] showDevice: Transmitter 1: 00245768428: (dice_avdevice.cpp)[ 782] showDevice: ISO channel : -1 00245774396: (dice_avdevice.cpp)[ 784] showDevice: ISO speed : 2 00245780427: (dice_avdevice.cpp)[ 787] showDevice: Nb audio channels : 4 00245787338: (dice_avdevice.cpp)[ 789] showDevice: Nb midi channels : 0 00245792771: (dice_avdevice.cpp)[ 792] showDevice: AC3 caps : 0x00000000 00245797845: (dice_avdevice.cpp)[ 794] showDevice: AC3 enable : 0x00000000 00245804113: (dice_avdevice.cpp)[ 797] showDevice: Channel names : 00245804140: (dice_avdevice.cpp)[ 802] showDevice: ADAT1 00245804155: (dice_avdevice.cpp)[ 802] showDevice: ADAT2 00245804176: (dice_avdevice.cpp)[ 802] showDevice: ADAT3 00245804192: (dice_avdevice.cpp)[ 802] showDevice: ADAT4 00245804216: (dice_avdevice.cpp)[ 806] showDevice: RX param space: 00245804233: (dice_avdevice.cpp)[ 807] showDevice: Nb of recv : 1 00245804252: (dice_avdevice.cpp)[ 809] showDevice: Receiver 0: 00245810261: (dice_avdevice.cpp)[ 812] showDevice: ISO channel : 2 00245816310: (dice_avdevice.cpp)[ 814] showDevice: Sequence start : 0 00245822033: (dice_avdevice.cpp)[ 817] showDevice: Nb audio channels : 8 00245829099: (dice_avdevice.cpp)[ 819] showDevice: Nb midi channels : 1 00245836232: (dice_avdevice.cpp)[ 822] showDevice: AC3 caps : 0x00000000 00245841167: (dice_avdevice.cpp)[ 824] showDevice: AC3 enable : 0x00000000 00245847606: (dice_avdevice.cpp)[ 827] showDevice: Channel names : 00245847621: (dice_avdevice.cpp)[ 832] showDevice: Bus1 L 00245847626: (dice_avdevice.cpp)[ 832] showDevice: Bus1 R 00245847636: (dice_avdevice.cpp)[ 832] showDevice: Bus2 L 00245847642: (dice_avdevice.cpp)[ 832] showDevice: Bus2 R 00245847649: (dice_avdevice.cpp)[ 832] showDevice: Bus3 L 00245847655: (dice_avdevice.cpp)[ 832] showDevice: Bus3 R 00245847663: (dice_avdevice.cpp)[ 832] showDevice: Bus4 L 00245847667: (dice_avdevice.cpp)[ 832] showDevice: Bus4 R 00245875561: (dice_avdevice.cpp)[ 323] setSamplingFrequency: Setting sample rate: 96000 port_name "firewire_pcm:0005950400400fc2_midi 0_in" already exists driver: cannot register port for firewire_pcm:0005950400400fc2_midi 0_in Cannot attach audio driver JackServer::Open failed with -1 no message buffer overruns Failed to open server Uh, port already exists? The Firewire ports are not visible from Alsa (I have blacklisted snd_dice since it does not play well with the Alesis io|14) and there just is (seq and raw, respectively): dak@lola:/usr/local/tmp/lilypond$ aplaymidi -l Port Client name Port name 14:0 Midi Through Midi Through Port-0 20:0 UM-4 UM-4 MIDI 1 20:1 UM-4 UM-4 MIDI 2 20:2 UM-4 UM-4 MIDI 3 20:3 UM-4 UM-4 MIDI 4 dak@lola:/usr/local/tmp/lilypond$ amidi -l Dir Device Name IO hw:1,0,0 UM-4 MIDI 1 IO hw:1,0,1 UM-4 MIDI 2 IO hw:1,0,2 UM-4 MIDI 3 IO hw:1,0,3 UM-4 MIDI 4 but those have nothing to do with the jackd error (right?). So jackd somehow gets in a loop or something? -- David Kastrup