Hi there!

Thank you Chuck for trying to help.

I don't want to be an unpleasant person but just out of curiousity I built qtractor from the latest git version and Debian 12's lv2 equipment here works fine too. My own lv2 builds and using lv2 with Reaper work as reported also fine 🙁 here.

Regards, Michael

Am 08.01.26 um 22:14 schrieb chuck elliot:
All lv2 packages are up to date and as it all seems to work in spite of these

messages, I will ignore them. I just thought they might be relevant to Michael's

problem...

Chuck.


On 08/01/2026 19:35, Ted Felix wrote:
On 1/8/26 9:19 AM, chuck elliot wrote:
I just did a new build of most recent version 26.06
and got the following errors when starting from the bash shell:
'looks like it may relate to the LV2 issue...

  These look like problems with the plugins.  Did you upgrade the plugins recently?

ADSPAPluginFactory::loadLibrary(): /usr/lib64/ladspa/zm1_1428.so
   /usr/lib64/ladspa/zm1_1428.so plugin loaded successfully

  Sounds good.

do_connect: could not connect to socket
connect: No such file or directory

  No idea what that is.

lilv_plugin_load_ports_if_necessary(): error: Plugin <http://home.gna.org/lv2vocoder/1> port symbol `600' is invalid

  lv2vocoder port 600 doesn't exist anymore?  lv2vocoder upgrade?

error: /usr/lib64/lv2/klaviatur.lv2/klaviatur.ttl:32:0: unexpected end of file lilv_world_load_file(): error: Error loading file `file:///usr/lib64/lv2/klaviatur.lv2/klaviatur.ttl'

  Looks like an error in the klaviatur plugin configuration file. .ttl files are plain text.  You can look at it if you want.

lilv_plugin_get_unique(): error: No value found for (493controlOutputPort. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (493controlOutputPort. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-constant-1_pi#0> port symbol `(null)' is invalid

etc...

  No idea what any of that is.  Could be harmless.  Philip might have some insight.

Ted.



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babarosa@MacBookPro:~/qtractor-$ cmake -B build
-- The C compiler identification is GNU 12.2.0
-- The CXX compiler identification is GNU 12.2.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for lroundf
-- Looking for lroundf - found
-- Looking for xmmintrin.h
-- Looking for xmmintrin.h - found
-- Looking for 3 include files fcntl.h, ..., signal.h
-- Looking for 3 include files fcntl.h, ..., signal.h - found
-- Looking for ladspa.h
-- Looking for ladspa.h - found
-- Looking for include files stddef.h, dssi.h
-- Looking for include files stddef.h, dssi.h - found
-- Looking for aeffectx.h
-- Looking for aeffectx.h - not found
-- Looking for vestige.h
-- Looking for vestige.h - found
-- Found PkgConfig: /usr/bin/pkg-config (found version "1.8.1") 
-- Checking for module 'jack>=0.100.0'
--   Found jack, version 1.9.21
-- Looking for jack_set_port_rename_callback
-- Looking for jack_set_port_rename_callback - found
-- Checking for module 'alsa'
--   Found alsa, version 1.2.8
-- Checking for module 'sndfile'
--   Found sndfile, version 1.2.0
-- Checking for module 'vorbis'
--   Found vorbis, version 1.3.7
-- Checking for module 'vorbisenc'
--   Found vorbisenc, version 1.3.7
-- Checking for module 'vorbisfile'
--   Found vorbisfile, version 1.3.7
-- Checking for module 'ogg'
--   Found ogg, version 1.3.5
-- Checking for module 'mad'
--   Found mad, version 0.15.1b
-- Checking for module 'samplerate'
--   Found samplerate, version 0.2.2
-- Checking for module 'rubberband>=3.0.0'
--   Found rubberband, version 3.2.1
-- Checking for module 'rubberband'
--   Found rubberband, version 3.2.1
-- Checking for module 'liblo'
--   Found liblo, version 0.31
-- Checking for module 'zlib'
--   Found zlib, version 1.2.13
-- Checking for module 'xcb'
--   Found xcb, version 1.15
-- Checking for module 'lv2'
--   Found lv2, version 1.18.10
-- Looking for lv2/urid/urid.h
-- Looking for lv2/urid/urid.h - found
-- Looking for lv2/ui/ui.h
-- Looking for lv2/ui/ui.h - found
-- Looking for lv2/instance-access/instance-access.h
-- Looking for lv2/instance-access/instance-access.h - found
-- Checking for module 'lilv-0'
--   Found lilv-0, version 0.24.14
-- Looking for lilv_file_uri_parse
-- Looking for lilv_file_uri_parse - found
-- Looking for lilv_world_unload_resource
-- Looking for lilv_world_unload_resource - found
-- Checking for module 'suil-0'
--   Found suil-0, version 0.10.18
-- Looking for suil_instance_get_handle
-- Looking for suil_instance_get_handle - found
-- Looking for lv2/atom/atom.h
-- Looking for lv2/atom/atom.h - found
-- Looking for lv2/worker/worker.h
-- Looking for lv2/worker/worker.h - found
-- Looking for lv2/state/state.h
-- Looking for lv2/state/state.h - found
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of LV2_State_Free_Path
-- Check size of LV2_State_Free_Path - done
-- Looking for lv2_programs.h
-- Looking for lv2_programs.h - found
-- Looking for lv2_midnam.h
-- Looking for lv2_midnam.h - found
-- Looking for lv2/presets/presets.h
-- Looking for lv2/presets/presets.h - found
-- Looking for lv2/patch/patch.h
-- Looking for lv2/patch/patch.h - found
-- Looking for lv2/time/time.h
-- Looking for lv2/time/time.h - found
-- Looking for lv2/options/options.h
-- Looking for lv2/options/options.h - found
-- Looking for lv2/buf-size/buf-size.h
-- Looking for lv2/buf-size/buf-size.h - found
-- Looking for lv2/parameters/parameters.h
-- Looking for lv2/parameters/parameters.h - found
-- Looking for lv2_port_change_request.h
-- Looking for lv2_port_change_request.h - found
-- Performing Test HAVE_LV2_UI_TOUCH
-- Performing Test HAVE_LV2_UI_TOUCH - Success
-- Performing Test HAVE_LV2_UI_REQ_VALUE
-- Performing Test HAVE_LV2_UI_REQ_VALUE - Success
-- Checking for module 'gtk+-2.0'
--   Found gtk+-2.0, version 2.24.33
-- Checking for module 'gtkmm-2.4'
--   Found gtkmm-2.4, version 2.24.5

  Qtractor 1.5.11.2 (Qt 5.15.8)

  Build target . . . . . . . . . . . . . . . . . . .: release

  JACK Audio Connection Kit support  . . . . . . . .: yes
  ALSA MIDI Sequencer support  . . . . . . . . . . .: yes
  General audio file support (libsndfile)  . . . . .: yes
  Ogg Vorbis audio file support (libvorbis)  . . . .: yes
  MPEG-1 Audio Layer 3 file support (libmad) . . . .: yes
  Sample-rate conversion support (libsamplerate) . .: yes
  Pitch-shifting support (librubberband) . . . . . .: yes
  Beat-detection support (minibpm) . . . . . . . . .: yes
  OSC service support (liblo)  . . . . . . . . . . .: yes
  Archive/Zip file support (zlib)  . . . . . . . . .: yes
  IEEE 32bit float optimizations . . . . . . . . . .: yes
  SSE optimization support (x86) . . . . . . . . . .: yes
  LADSPA plug-in support . . . . . . . . . . . . . .: yes
  DSSI plug-in support . . . . . . . . . . . . . . .: yes
  VST2 plug-in support . . . . . . . . . . . . . . .: yes
  VST3 plug-in support . . . . . . . . . . . . . . .: yes
  CLAP plug-in support . . . . . . . . . . . . . . .: yes
  LV2 plug-in support  . . . . . . . . . . . . . . .: yes
  LV2 plug-in support (liblilv)  . . . . . . . . . .: yes
  LV2 plug-in UI support . . . . . . . . . . . . . .: yes
  LV2 plug-in UI support (libsuil) . . . . . . . . .: yes
  LV2 plug-in External UI support  . . . . . . . . .: yes
  LV2 plug-in MIDI/Event support (DEPRECATED)  . . .: no
  LV2 plug-in MIDI/Atom support  . . . . . . . . . .: yes
  LV2 plug-in Worker/Schedule support  . . . . . . .: yes
  LV2 plug-in State support  . . . . . . . . . . . .: yes
  LV2 plug-in State Files support  . . . . . . . . .: yes
  LV2 plug-in State Make Path support (DANGEROUS)  .: no
  LV2 plug-in State Free Path support  . . . . . . .: yes
  LV2 plug-in Programs support . . . . . . . . . . .: yes
  LV2 plug-in MIDNAM support . . . . . . . . . . . .: yes
  LV2 plug-in Presets support  . . . . . . . . . . .: yes
  LV2 plug-in Patch support  . . . . . . . . . . . .: yes
  LV2 plug-in Port-event support . . . . . . . , . .: yes
  LV2 plug-in Port-change request (EXPERIMENTAL) . .: yes
  LV2 plug-in Time support . . . . . . . . . . . . .: yes
  LV2 plug-in Time/position support  . . . . . . . .: yes
  LV2 plug-in Options support  . . . . . . . . . . .: yes
  LV2 plug-in Buf-size support . . . . . . . . . . .: yes
  LV2 plug-in Parameters support . . . . . . . . . .: yes
  LV2 plug-in UI Touch interface support . . . . . .: yes
  LV2 plug-in UI Request-value support . . . . . . .: yes
  LV2 plug-in UI Idle interface support  . . . . . .: yes
  LV2 plug-in UI Show interface support  . . . . . .: yes
  LV2 plug-in UI GTK2 native support . . . . . . . .: yes
  LV2 plug-in UI GTKMM2 native support . . . . . . .: yes
  LV2 plug-in UI X11 native support  . . . . . . . .: yes

  JACK Session support . . . . . . . . . . . . . . .: yes
  JACK Latency support . . . . . . . . . . . . . . .: yes
  JACK Metadata support  . . . . . . . . . . . . . .: yes

  Non/New Session Management (NSM) support . . . . .: yes

  VeSTige header support . . . . . . . . . . . . . .: yes
  Unique/Single instance support . . . . . . . . . .: no
  Gradient eye-candy . . . . . . . . . . . . . . . .: yes
  Debugger stack-trace (gdb) . . . . . . . . . . . .: no

  Install prefix . . . . . . . . . . . . . . . . . .: /usr/local

-- Configuring done
-- Generating done
-- Build files have been written to: /home/babarosa/qtractor-/build
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