Public bug reported: This may or may not be an artifact of me running a 32-bit userland on a 64-bit kernel (for debugging and testing purposes).
However, preceding the command line with "setarch i386" does not help. The exact command line used was jackd -d alsa -X raw -d hw:0 To trigger the bug, it is important that there actually is a raw Midi device available on the system. Any such device will trigger the problem in my experience. Here is the complete output: 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" audio_reservation_init Acquire audio card Audio0 creating alsa driver ... hw:0|hw:0|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 integer little-endian ALSA: use 2 periods for capture ALSA: final selected sample format for playback: 32bit integer little-endian ALSA: use 2 periods for playback scan: added port hw:1,0,0 in-hw-1-0-0-UM-4-MIDI-1 scan: added port hw:1,0,1 in-hw-1-0-1-UM-4-MIDI-2 scan: added port hw:1,0,2 in-hw-1-0-2-UM-4-MIDI-3 scan: added port hw:1,0,3 in-hw-1-0-3-UM-4-MIDI-4 scan: added port hw:1,0,0 out-hw-1-0-0-UM-4-MIDI-1 scan: added port hw:1,0,1 out-hw-1-0-1-UM-4-MIDI-2 scan: added port hw:1,0,2 out-hw-1-0-2-UM-4-MIDI-3 scan: added port hw:1,0,3 out-hw-1-0-3-UM-4-MIDI-4 ALSA lib rawmidi_hw.c:100:(snd_rawmidi_hw_params) SNDRV_RAWMIDI_IOCTL_PARAMS failed: Invalid argument jackd: rawmidi.c:268: snd_rawmidi_open_conf: Assertion `err >= 0' failed. Aborted (core dumped) ProblemType: Crash DistroRelease: Ubuntu 17.10 Package: jackd2 1.9.10+20150825git1ed50c92~dfsg-2ubuntu2 ProcVersionSignature: Ubuntu 4.10.0-26.30-lowlatency 4.10.17 Uname: Linux 4.10.0-26-lowlatency x86_64 ApportVersion: 2.20.5-0ubuntu5 Architecture: i386 AssertionMessage: jackd: rawmidi.c:268: snd_rawmidi_open_conf: Assertion `err >= 0' failed. CurrentDesktop: MATE Date: Sun Jul 9 10:27:38 2017 ExecutablePath: /usr/bin/jackd InstallationDate: Installed on 2011-10-14 (2094 days ago) InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111011) ProcCmdline: jackd -d alsa -X raw -d hw:0 Signal: 6 SourcePackage: jackd2 StacktraceTop: __assert_fail_base (fmt=0xf743009c "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0xf6f38cd3 "err >= 0", file=0xf6f48d35 "rawmidi.c", line=268, function=0xf6f49588 "snd_rawmidi_open_conf") at assert.c:92 __GI___assert_fail (assertion=0xf6f38cd3 "err >= 0", file=0xf6f48d35 "rawmidi.c", line=268, function=0xf6f49588 "snd_rawmidi_open_conf") at assert.c:101 () at /usr/lib/i386-linux-gnu/libasound.so.2 () at /usr/lib/i386-linux-gnu/libasound.so.2 snd_rawmidi_open () at /usr/lib/i386-linux-gnu/libasound.so.2 Title: jackd assert failure: jackd: rawmidi.c:268: snd_rawmidi_open_conf: Assertion `err >= 0' failed. UpgradeStatus: Upgraded to artful on 2017-05-03 (66 days ago) UserGroups: adm admin audio cdrom dialout fax floppy lpadmin lxd plugdev pulse-access sambashare ** Affects: jackd2 (Ubuntu) Importance: Medium Status: New ** Tags: apport-crash artful i386 ** Information type changed from Private to Public -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to jackd2 in Ubuntu. https://bugs.launchpad.net/bugs/1703176 Title: jackd assert failure: jackd: rawmidi.c:268: snd_rawmidi_open_conf: Assertion `err >= 0' failed. Status in jackd2 package in Ubuntu: New Bug description: This may or may not be an artifact of me running a 32-bit userland on a 64-bit kernel (for debugging and testing purposes). However, preceding the command line with "setarch i386" does not help. The exact command line used was jackd -d alsa -X raw -d hw:0 To trigger the bug, it is important that there actually is a raw Midi device available on the system. Any such device will trigger the problem in my experience. Here is the complete output: 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" audio_reservation_init Acquire audio card Audio0 creating alsa driver ... hw:0|hw:0|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 integer little-endian ALSA: use 2 periods for capture ALSA: final selected sample format for playback: 32bit integer little-endian ALSA: use 2 periods for playback scan: added port hw:1,0,0 in-hw-1-0-0-UM-4-MIDI-1 scan: added port hw:1,0,1 in-hw-1-0-1-UM-4-MIDI-2 scan: added port hw:1,0,2 in-hw-1-0-2-UM-4-MIDI-3 scan: added port hw:1,0,3 in-hw-1-0-3-UM-4-MIDI-4 scan: added port hw:1,0,0 out-hw-1-0-0-UM-4-MIDI-1 scan: added port hw:1,0,1 out-hw-1-0-1-UM-4-MIDI-2 scan: added port hw:1,0,2 out-hw-1-0-2-UM-4-MIDI-3 scan: added port hw:1,0,3 out-hw-1-0-3-UM-4-MIDI-4 ALSA lib rawmidi_hw.c:100:(snd_rawmidi_hw_params) SNDRV_RAWMIDI_IOCTL_PARAMS failed: Invalid argument jackd: rawmidi.c:268: snd_rawmidi_open_conf: Assertion `err >= 0' failed. Aborted (core dumped) ProblemType: Crash DistroRelease: Ubuntu 17.10 Package: jackd2 1.9.10+20150825git1ed50c92~dfsg-2ubuntu2 ProcVersionSignature: Ubuntu 4.10.0-26.30-lowlatency 4.10.17 Uname: Linux 4.10.0-26-lowlatency x86_64 ApportVersion: 2.20.5-0ubuntu5 Architecture: i386 AssertionMessage: jackd: rawmidi.c:268: snd_rawmidi_open_conf: Assertion `err >= 0' failed. CurrentDesktop: MATE Date: Sun Jul 9 10:27:38 2017 ExecutablePath: /usr/bin/jackd InstallationDate: Installed on 2011-10-14 (2094 days ago) InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111011) ProcCmdline: jackd -d alsa -X raw -d hw:0 Signal: 6 SourcePackage: jackd2 StacktraceTop: __assert_fail_base (fmt=0xf743009c "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0xf6f38cd3 "err >= 0", file=0xf6f48d35 "rawmidi.c", line=268, function=0xf6f49588 "snd_rawmidi_open_conf") at assert.c:92 __GI___assert_fail (assertion=0xf6f38cd3 "err >= 0", file=0xf6f48d35 "rawmidi.c", line=268, function=0xf6f49588 "snd_rawmidi_open_conf") at assert.c:101 () at /usr/lib/i386-linux-gnu/libasound.so.2 () at /usr/lib/i386-linux-gnu/libasound.so.2 snd_rawmidi_open () at /usr/lib/i386-linux-gnu/libasound.so.2 Title: jackd assert failure: jackd: rawmidi.c:268: snd_rawmidi_open_conf: Assertion `err >= 0' failed. UpgradeStatus: Upgraded to artful on 2017-05-03 (66 days ago) UserGroups: adm admin audio cdrom dialout fax floppy lpadmin lxd plugdev pulse-access sambashare To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/jackd2/+bug/1703176/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp