Red Zeppelin LV2 causes Reaper to crash with pipewire on arch linux

[plainoldcheese]

I am running arch linux and using the linux native version of reaper. Loading the red zeppelin plugin will often cause the entire project to crash (even with "run as dedicated process" enabled).

I am using pipewire (pw-jack) and this is the output when red zeppelin is loaded without crashing reaper, It does not seem to give any output when it crashes.

the crash often happens when i right click and replace black pearl with red zeppelin.
I am unsure whether it happens the other way around with black pearl as well.
I have only used the 2 out versions of the plugins.

jack: created client
jack: setting TIME_CRITICAL = 81
LC_NUMERIC / LANG is set to 'en_GB.UTF-8', overriding LC_NUMERIC environment to POSIX
jack: activated client
ALSA lib pcm_dsnoop.c:600:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1035:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib confmisc.c:1369:(snd_func_refer) Unable to find definition 'cards.0.pcm.hdmi.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2'
ALSA lib conf.c:5111:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5599:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM hdmi
ALSA lib confmisc.c:1369:(snd_func_refer) Unable to find definition 'cards.0.pcm.hdmi.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2'
ALSA lib conf.c:5111:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5599:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM hdmi
ALSA lib confmisc.c:1369:(snd_func_refer) Unable to find definition 'cards.0.pcm.modem.0:CARD=0'
ALSA lib conf.c:5111:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5599:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline:CARD=0,DEV=0
ALSA lib confmisc.c:1369:(snd_func_refer) Unable to find definition 'cards.0.pcm.modem.0:CARD=0'
ALSA lib conf.c:5111:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5599:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline:CARD=0,DEV=0
ALSA lib confmisc.c:1369:(snd_func_refer) Unable to find definition 'cards.0.pcm.modem.0:CARD=0'
ALSA lib conf.c:5111:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5599:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM phoneline
ALSA lib confmisc.c:1369:(snd_func_refer) Unable to find definition 'cards.0.pcm.modem.0:CARD=0'
ALSA lib conf.c:5111:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5599:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM phoneline
ALSA lib pcm_oss.c:397:(_snd_pcm_oss_open) Cannot open device /dev/dsp
ALSA lib pcm_oss.c:397:(_snd_pcm_oss_open) Cannot open device /dev/dsp
ALSA lib confmisc.c:160:(snd_config_get_card) Invalid field card
ALSA lib pcm_usb_stream.c:482:(_snd_pcm_usb_stream_open) Invalid card 'card'
ALSA lib confmisc.c:160:(snd_config_get_card) Invalid field card
ALSA lib pcm_usb_stream.c:482:(_snd_pcm_usb_stream_open) Invalid card 'card'
ALSA lib pcm_dmix.c:1035:(snd_pcm_dmix_open) unable to open slave
fluidsynth: warning: No preset found on channel 9 [bank=128 prog=0]

I don't entirely understand what is happening but the lines ALSA lib pcm_oss.c:397:(_snd_pcm_oss_open) Cannot open device /dev/dsp and fluidsynth: warning: No preset found on channel 9 [bank=128 prog=0] seem to be different than the rest of the lines which seem to just be alsa going through all the sound devices.

[x42]

This is likely a Reaper specific issue, but to make sure, and a proper back trace is needed.
But to double-check: Does the plugin runs in other LV2 hosts on your system? Ardour, Carla, qtractor, jalv... ?

[plainoldcheese]

I was hoping it wouldn't be reaper specific. It does run in carla and seems like it does make audio but I have not managed to get carla to output sound when run as standalone with pipewire. I will check with jalv as well.

[plainoldcheese]

the output from jalv seem to be the same but it does run

Plugin:       http://gareus.org/oss/lv2/avldrums#BlackPearl
UI:           None
JACK Name:    Black Pearl Drumkit
Sample rate:  96000 Hz
Block length: 1024 frames
MIDI buffers: 32768 bytes
Comm buffers: 524288 bytes
Update rate:  30.0 Hz
ALSA lib pcm_dsnoop.c:600:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1035:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_oss.c:397:(_snd_pcm_oss_open) Cannot open device /dev/dsp
ALSA lib pcm_oss.c:397:(_snd_pcm_oss_open) Cannot open device /dev/dsp
ALSA lib confmisc.c:160:(snd_config_get_card) Invalid field card
ALSA lib pcm_usb_stream.c:482:(_snd_pcm_usb_stream_open) Invalid card 'card'
ALSA lib confmisc.c:160:(snd_config_get_card) Invalid field card
ALSA lib pcm_usb_stream.c:482:(_snd_pcm_usb_stream_open) Invalid card 'card'
ALSA lib pcm_dmix.c:1035:(snd_pcm_dmix_open) unable to open slave

> fluidsynth: warning: No preset found on channel 9 [bank=128 prog=0]

is the fluidsynth warning anything to worry about?