0009962: Ardour crashes when attempting to make a multi-track recording over USB using Linux - MantisBT

ID	Project	Category	View Status	Date Submitted	Last Update

0009962	ardour	bugs	public	2025-08-01 17:00	2025-08-05 08:15

Reporter	frits97	Assigned To
Priority	normal	Severity	crash	Reproducibility	always
Status	new	Resolution	open
Platform	Debian GNU	OS	Linux	OS Version	(any)
Product Version	8.12

Summary	0009962: Ardour crashes when attempting to make a multi-track recording over USB using Linux
Description	I have a Behringer XR18 and want to record multi-track via USB. USB Sends are set. Start Ardour, select "New Session", "Recording Session", and the Audio/MIDI Setup as in the attached screenshot. When I press start, I get a window with "indexing (something)", an Ardour windows opens and craches within one second. Rebooted all systems, same result. From dmesg: [16398.264016] usb 1-6: new high-speed USB device number 8 using xhci_hcd [16398.412985] usb 1-6: New USB device found, idVendor=1397, idProduct=00d4, bcdDevice= 2.00 [16398.413000] usb 1-6: New USB device strings: Mfr=1, Product=3, SerialNumber=2 [16398.413008] usb 1-6: Product: XR18 [16398.413013] usb 1-6: Manufacturer: BEHRINGER [16398.413018] usb 1-6: SerialNumber: production 03 [17274.394300] AlsaAudioSlave[24513]: segfault at 7f52a4276002 ip 00007f52a588d4c0 sp 00007f52a4258dd8 error 4 in libalsa_audiobackend.so[7f52a5862000+30000] likely on CPU 0 (core 0, socket 0) [17274.394334] Code: 48 89 c1 49 c1 e0 02 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <0f> be 51 02 44 0f b7 19 66 0f ef c0 c1 e2 10 81 e2 00 00 ff 00 44 The only libalsa_audiobackend.so on the system: /var/lib/flatpak/app/org.ardour.Ardour/x86_64/stable/8c53d2a59ce83c935787d22178cfabf338922a6541f551c472fbb8d361d391c7/files/lib/ardour8/backends/ Some system info Hardware Lenovo ThinkCentre M920q, Intel i5-8500T, 16GB. Debian stable (v12.11), fully updated I first used the Free/Demo Version, later today replaced by the flathub version. The log is from this last version.
Steps To Reproduce	Connect XR18 with USB Start Ardour select "New Session" "Recording Session" and the Audio/MIDI Setup as in the attached screenshot. press start I get a window with "indexing (something)", an Ardour windows opens and craches within one second.
Tags	No tags attached.

frits97 2025-08-01 17:00 reporter	2025-08-01_15-36_1.png (45,808 bytes) 2025-08-01_15-36_1.png (45,808 bytes)

x42 2025-08-02 22:37 administrator ~0029365	Does it work when you use the XR18 for both input and output? Could you get a backtrace? The source-code line number where Ardour crashes would be interesting here: https://ardour.org/debugging_ardour

frits97 2025-08-05 08:15 reporter ~0029372	Thank you for your reply. I did what you asked for as good as I could. One file is the output from the shell, the other the output from gdb. I saw that most instruction refer to JACK. This is not installed on this system (yet). ardour_clilog.txt (1,828 bytes) me@mine:~/ardour_work$ /opt/Ardour-8.12.0-demo/bin/ardour8 Ardour8.12.0 (built using 8.12 and GCC version 10.2.1 20210110) Ardour: [INFO]: Your system is configured to limit Ardour to 1048576 open files Ardour: [INFO]: Loading system configuration file /opt/Ardour-8.12.0-demo/etc/system_config Ardour: [INFO]: CPU vendor: GenuineIntel Ardour: [INFO]: AVX capable processor Ardour: [INFO]: AVX with FMA capable processor Ardour: [INFO]: CPU brand: Intel(R) Core(TM) i5-8500T CPU @ 2.10GHz Ardour: [INFO]: Using AVX and FMA optimized routines Ardour: [INFO]: Set Clip Library directory to '/home/me/.local/share/sounds/clips' Ardour: [INFO]: Loading plugin meta data file /opt/Ardour-8.12.0-demo/share/plugin_metadata/plugin_tags Ardour: [INFO]: add_lrdf_data '/home/me/.config/ardour8/rdf:/opt/Ardour-8.12.0-demo/share/rdf:/usr/local/share/ladspa/rdf:/usr/share/ladspa/rdf' Ardour: [INFO]: read rdf_file 'file:///usr/share/ladspa/rdf/ladspa.rdfs' Cannot xinstall SIGPIPE error handler Ardour: [INFO]: Loading default ui configuration file /opt/Ardour-8.12.0-demo/etc/default_ui_config Ardour: [INFO]: Loading 461 MIDI patches from /opt/Ardour-8.12.0-demo/share/patchfiles Ardour: [INFO]: Loading color file /opt/Ardour-8.12.0-demo/share/themes/dark-ardour.colors Ardour: [INFO]: Loading ui configuration file /opt/Ardour-8.12.0-demo/etc/clearlooks.rc Ardour: [INFO]: Loading bindings from /opt/Ardour-8.12.0-demo/etc/ardour.keys Loading ui configuration file /opt/Ardour-8.12.0-demo/etc/clearlooks.rc set default folder to /home/me Found nothing along /home/me/.config/ardour8/templates:/opt/Ardour-8.12.0-demo/share/templates Segmentation fault (core dumped) me@mine:~/ardour_work$ ardour-request-device: watched PID no longer exists - releasing device. ardour-request-device: watched PID no longer exists - releasing device. ardour_clilog.txt (1,828 bytes) ardour_bt.txt (9,977 bytes) me@mine:~/ardour_work$ gdb GNU gdb (Debian 13.1-3) 13.1 Copyright (C) 2023 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <https://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word". (gdb) core-file core.9270 warning: Can't open file /SYSV00000000 (deleted) during file-backed mapping note processing [New LWP 9324] [New LWP 9278] [New LWP 9279] [New LWP 9284] [New LWP 9280] [New LWP 9313] [New LWP 9320] [New LWP 9296] [New LWP 9276] [New LWP 9317] [New LWP 9277] [New LWP 9326] [New LWP 9283] [New LWP 9270] [New LWP 9319] [New LWP 9322] [New LWP 9315] Core was generated by `/opt/Ardour-8.12.0-demo/bin/ardour-8.12.0'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f9036ad9100 in ?? () [Current thread is 1 (LWP 9324)] (gdb) thread apply all bt Thread 17 (LWP 9315): #0 0x00007f9048dabf16 in ?? () #1 0x0000000000000000 in ?? () Thread 16 (LWP 9322): #0 0x00007f9048e2221f in ?? () #1 0x00007f8804ffcbf0 in ?? () #2 0x00007f90360b4c70 in ?? () #3 0x0000000000000001 in ?? () #4 0xffffffff00001fff in ?? () #5 0x00007f90360b4c78 in ?? () #6 0x00007f904a770f75 in ?? () #7 0x0000000000000000 in ?? () Thread 15 (LWP 9319): #0 0x00007f9048e22316 in ?? () #1 0x00005588e3451db0 in ?? () #2 0x00005588e358d44c in ?? () #3 0x0000000000000001 in ?? () #4 0x0000000000000000 in ?? () Thread 14 (LWP 9270): #0 0x00007f9048e2221f in ?? () #1 0x00005588e323e460 in ?? () #2 0x00005588e323e460 in ?? () #3 0x0000000000000004 in ?? () #4 0x0000006400000001 in ?? () #5 0x00005588e34ad280 in ?? () #6 0x00007f9049afdc8e in ?? () #7 0x00005588e34ad280 in ?? () #8 0x00000001000054d5 in ?? () #9 0x00000000000054d4 in ?? () #10 0x000000647fffffff in ?? () #11 0x00005588e4d57ec0 in ?? () #12 0x00005588e4d57ecc in ?? () #13 0x00005588e4d57ec0 in ?? () #14 0x00000000000054d5 in ?? () #15 0x00000000000054d4 in ?? () #16 0x00000000000054d3 in ?? () #17 0x00000000000054d2 in ?? () #18 0x00007f9049afe023 in ?? () #19 0x00005588e34ad280 in ?? () #20 0x00007f9049afde42 in ?? () #21 0x00000000000054d4 in ?? () #22 0x0000000000000000 in ?? () Thread 13 (LWP 9283): #0 0x00007f9048e277d9 in ?? () #1 0x00007f9049b4d8ff in ?? () #2 0x00005588e3451db0 in ?? () #3 0x00007f904a79cbc8 in ?? () #4 0x00005588e34527b8 in ?? () #5 0x00007f904af8249f in ?? () #6 0x00005588e34527d8 in ?? () #7 0x00007f9040000b90 in ?? () #8 0x00007f9044b0dc80 in ?? () #9 0x00007f9044b0dc70 in ?? () #10 0x00007f902c000b90 in ?? () #11 0x000000000000001f in ?? () #12 0x000000000000001f in ?? () #13 0x00007f9044b0dca0 in ?? () #14 0x0000000000000002 in ?? () #15 0x00005588e34506c0 in ?? () #16 0x00007f904a79cbc8 in ?? () #17 0xffffffffffffff30 in ?? () #18 0x0000000000000002 in ?? () #19 0x00007ffe66e1d730 in ?? () #20 0x00007f904430e000 in ?? () #21 0x00007f904a760c47 in ?? () #22 0x00007f9044b0e6c0 in ?? () #23 0x0000000000000000 in ?? () Thread 12 (LWP 9326): #0 0x00007f9048e277d9 in ?? () #1 0x00007f9049b4da0a in ?? () #2 0x0000000000000cfb in ?? () #3 0x000000000e38172e in ?? () #4 0x000000000000000e in ?? () #5 0x000000003b9ac632 in ?? () #6 0x0000000000000001 in ?? () #7 0x00005588e30548e0 in ?? () #8 0x00000000c6f97a5c in ?? () #9 0x00007f9049acb50e in ?? () #10 0x00000000c614989c in ?? () #11 0x00005588e30548e0 in ?? () #12 0x0000000000e4e1c0 in ?? () #13 0x0000000000000000 in ?? () Thread 11 (LWP 9277): #0 0x00007f9048df5545 in ?? () #1 0x0000000000000000 in ?? () Thread 10 (LWP 9317): #0 0x00007f9048e2221f in ?? () #1 0x00007f903461be00 in ?? () #2 0x00005588e337d500 in ?? () #3 0x0000000000000001 in ?? () #4 0x00000064e37456b0 in ?? () #5 0x00007f903461be08 in ?? () #6 0x00007f9036ad43f1 in ?? () #7 0x00007f900c000b90 in ?? () #8 0x0000000000000000 in ?? () Thread 9 (LWP 9276): #0 0x00007f9048e2221f in ?? () #1 0x6461657268746274 in ?? () #2 0x00007f9047772e68 in ?? () #3 0x0000000000000001 in ?? () #4 0xffffffff4bbdd000 in ?? () #5 0x00000000000001fe in ?? () #6 0x00007f904a73a6bd in ?? () #7 0x00005588e2dfb500 in ?? () #8 0x0000003900000003 in ?? () #9 0x00005588e2dfb500 in ?? () #10 0x00007f904a73a715 in ?? () #11 0x00005588e2dfb4fc in ?? () #12 0x00005588e2dfb4fc in ?? () #13 0x00007f904a79cbc8 in ?? () #14 0x00007f904b55e233 in ?? () #15 0x6461657268746274 in ?? () #16 0x0073746e65766520 in ?? () #17 0x00007f9040000b70 in ?? () #18 0x00007f9047772ee0 in ?? () #19 0x00005588e2dfb500 in ?? () #20 0x00007f9047772ed7 in ?? () #21 0x0000000000000002 in ?? () #22 0x00007ffe66e1d790 in ?? () #23 0x00007f90476f1000 in ?? () #24 0x00007f904b55e519 in ?? () #25 0x00007f9047772f00 in ?? () #26 0x00007f904b55e4f0 in ?? () #27 0x00007f904a79cbc8 in ?? () #28 0x00005588e2dfb4d0 in ?? () #29 0x0000000000000002 in ?? () #30 0x00007ffe66e1d790 in ?? () #31 0x00007f90476f1000 in ?? () #32 0x00007f904a75fcbe in ?? () #33 0x0000000000000000 in ?? () Thread 8 (LWP 9296): #0 0x00007f9048e2221f in ?? () #1 0x00005588e303d640 in ?? () #2 0x00005588e303d640 in ?? () #3 0x0000000000000002 in ?? () #4 0x0000161400000001 in ?? () #5 0x00005588e303d500 in ?? () #6 0x00007f9049afdc8e in ?? () #7 0x00005588e303d640 in ?? () #8 0x00000001ffffff30 in ?? () #9 0x00007f9010000030 in ?? () #10 0x000016147fffffff in ?? () #11 0x00005588e303d500 in ?? () #12 0x00007f9049bfef98 in ?? () #13 0x00005588e303d500 in ?? () #14 0x0000000000000001 in ?? () #15 0x0000000000000002 in ?? () #16 0x00007ffe66e1c660 in ?? () #17 0x00007f90350b6000 in ?? () #18 0x00007f9049afdd9f in ?? () #19 0x00005588e303d640 in ?? () #20 0x0000000000000000 in ?? () Thread 7 (LWP 9320): #0 0x00007f9048e2221f in ?? () #1 0x0000000000000000 in ?? () Thread 6 (LWP 9313): #0 0x00007f9048e2221f in ?? () #1 0x00007f97e5018c03 in ?? () #2 0x00007f9017ffcc70 in ?? () #3 0x0000000000000001 in ?? () #4 0xffffffff00001fff in ?? () #5 0x00007f9017ffcc78 in ?? () #6 0x00007f904a770f75 in ?? () #7 0x0000000000000000 in ?? () Thread 5 (LWP 9280): #0 0x00007f9048e277d9 in ?? () #1 0x00007f9049b4d8ff in ?? () #2 0x00007f904bb5e8a0 in ?? () #3 0x00007f904bb5e8d0 in ?? () #4 0x00007f904bb5e8c0 in ?? () #5 0x00007f904af3cbb7 in ?? () #6 0x00007f9040000b90 in ?? () #7 0x2f2c83cdf6c7a500 in ?? () #8 0x00007f90456f2c80 in ?? () #9 0x0000000000000008 in ?? () #10 0x726573796c616e41 in ?? () #11 0x00007f90456f2c00 in ?? () #12 0x0000000000000002 in ?? () #13 0x00005588e2e7d680 in ?? () #14 0x00007f904a79cbc8 in ?? () #15 0xffffffffffffff30 in ?? () #16 0x0000000000000002 in ?? () #17 0x00007ffe66e1d7d0 in ?? () #18 0x00007f9044ef3000 in ?? () #19 0x00007f904a760c47 in ?? () #20 0x0000000000000000 in ?? () Thread 4 (LWP 9284): #0 0x00007f9048e277d9 in ?? () #1 0x00007f9049b4d8ff in ?? () #2 0x00005588e3451db0 in ?? () #3 0x00005588e34527e8 in ?? () #4 0x00005588e3452800 in ?? () #5 0x00007f904af815c7 in ?? () #6 0x00005588e3450180 in ?? () #7 0x0000000000000024 in ?? () #8 0x00007f9020000b90 in ?? () #9 0x0000000000000024 in ?? () #10 0x0000000000000024 in ?? () #11 0x00007f904a75fc66 in ?? () #12 0x00005588e3450180 in ?? () #13 0x00007f904a79cbc8 in ?? () #14 0xffffffffffffff30 in ?? () #15 0x0000000000000002 in ?? () #16 0x00007ffe66e1d730 in ?? () #17 0x00007f904a760c47 in ?? () #18 0x0000000000000000 in ?? () Thread 3 (LWP 9279): #0 0x00007f9048e277d9 in ?? () #1 0x00007f9049b4d8ff in ?? () #2 0x00007f904bb61910 in ?? () #3 0x00007f904bb61928 in ?? () #4 0x00005588acd7e1a0 in ?? () #5 0x00007f904b4f2001 in ?? () #6 0x00007f9030000b70 in ?? () #7 0x00007f9040000b90 in ?? () #8 0x00007f9040000b90 in ?? () #9 0x0000000000000011 in ?? () #10 0x00007f9030000b90 in ?? () #11 0x0000000000000011 in ?? () #12 0x0000000000000011 in ?? () #13 0x00007f9045ef3ca0 in ?? () #14 0x0000000000000002 in ?? () #15 0x00005588e2e7df40 in ?? () #16 0x00007f904a79cbc8 in ?? () #17 0xffffffffffffff30 in ?? () #18 0x0000000000000002 in ?? () #19 0x00007ffe66e1d570 in ?? () #20 0x00007f90456f4000 in ?? () #21 0x00007f904a760c47 in ?? () #22 0x0000000000000000 in ?? () Thread 2 (LWP 9278): #0 0x00007f9048e277d9 in ?? () #1 0x00007f9049b4d8ff in ?? () #2 0x00007f904bb61910 in ?? () #3 0x00007f904bb61928 in ?? () #4 0x00005588acd7e1a0 in ?? () #5 0x00007f904b4f2001 in ?? () #6 0x00007f903c000b70 in ?? () #7 0x00007f9040000b90 in ?? () #8 0x00007f9040000b90 in ?? () #9 0x0000000000000011 in ?? () #10 0x00007f903c000b90 in ?? () #11 0x0000000000000011 in ?? () #12 0x0000000000000011 in ?? () #13 0x00007f90466f4ca0 in ?? () #14 0x0000000000000002 in ?? () #15 0x00005588e2e7db60 in ?? () #16 0x00007f904a79cbc8 in ?? () #17 0xffffffffffffff30 in ?? () #18 0x0000000000000002 in ?? () #19 0x00007ffe66e1d570 in ?? () #20 0x00007f9045ef5000 in ?? () #21 0x00007f904a760c47 in ?? () #22 0x0000000000000000 in ?? () Thread 1 (LWP 9324): #0 0x00007f9036ad9100 in ?? () #1 0x00000000000000a4 in ?? () #2 0x00007f9036ad9d04 in ?? () #3 0x0000000000000cfb in ?? () #4 0x0000000000000008 in ?? () #5 0x0000000000000001 in ?? () #6 0x00007f9036ad8162 in ?? () #7 0x0000000000000400 in ?? () #8 0x0000000000000401 in ?? () #9 0x00005588e33ed414 in ?? () #10 0x00000000000008e0 in ?? () #11 0x0000000000000400 in ?? () #12 0x0000000000004800 in ?? () #13 0x00005588e33ed3e8 in ?? () #14 0x00005588e33ec950 in ?? () #15 0x0000000000000008 in ?? () #16 0x40d4d52220cb1439 in ?? () #17 0x00007f9000000400 in ?? () #18 0x00005588e33ed3c0 in ?? () #19 0x0000000000000000 in ?? () ardour_bt.txt (9,977 bytes)

Date Modified	Username	Field	Change
2025-08-01 17:00	frits97	New Issue
2025-08-01 17:00	frits97	File Added: 2025-08-01_15-36_1.png
2025-08-02 22:37	x42	Note Added: 0029365
2025-08-05 08:15	frits97	Note Added: 0029372
2025-08-05 08:15	frits97	File Added: ardour_clilog.txt
2025-08-05 08:15	frits97	File Added: ardour_bt.txt