Re: [Rosegarden-user] Can not access lv2 plugins within latest build

Thu, 08 Jan 2026 06:37:30 -0800 

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...

Chuck.


+++++++++++++++++++++++++++++++++++++++++++++++++++++

ADSPAPluginFactory::loadLibrary(): /usr/lib64/ladspa/zm1_1428.so
  /usr/lib64/ladspa/zm1_1428.so plugin loaded successfully
do_connect: could not connect to socket
connect: No such file or directory
lilv_plugin_load_ports_if_necessary(): error: Plugin <http://home.gna.org/lv2vocoder/1> port symbol `600' is invalid 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' 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 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-2_pi#0> port symbol `(null)' is invalid 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-2_sqrtpi#0> port symbol `(null)' is invalid 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-e#0> port symbol `(null)' is invalid 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-ln10#0> port symbol `(null)' is invalid 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-ln2#0> port symbol `(null)' is invalid 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-log10e#0> port symbol `(null)' is invalid 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-log2e#0> port symbol `(null)' is invalid 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-pi#0> port symbol `(null)' is invalid 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-pi_2#0> port symbol `(null)' is invalid 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-pi_4#0> port symbol `(null)' is invalid 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-sqrt1_2#0> port symbol `(null)' is invalid 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-sqrt2#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-abs#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-abs-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-acos#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-acos-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-asin#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-asin-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-atan#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-atan-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort2. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort2. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-atan2#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort2. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort2. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-atan2-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-ceil#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-ceil-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-cos#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-cos-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-cosh#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-cosh-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-exp#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-exp-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-floor#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-floor-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort2. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort2. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-fmod#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort2. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort2. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-fmod-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-log#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-log-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-log10#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-log10-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort2. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort2. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-pow#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort2. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort2. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-pow-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-sin#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-sin-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-sinh#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-sinh-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-sqrt#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-sqrt-ctrl#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494audioOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-tan#0> port symbol `(null)' is invalid lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#index ...) property lilv_plugin_get_unique(): error: No value found for (494controlOutputPort1. http://lv2plug.in/ns/lv2core#symbol ...) property lilv_plugin_load_ports_if_necessary(): error: Plugin <http://ll-plugins.nongnu.org/lv2/math-function-tan-ctrl#0> port symbol `(null)' is invalid 


On 07/01/2026 22:05, Babarosa via Rosegarden-user wrote:

Hi there!

Thank you for your quick answer.

1.)

I built v25.12 again and everything works as expected.

cmake displays lv2, lilv, ... found.

2.)

Afterwards I built v26.06 and lv2 doesn't work.

Although now lv2, lilv are detected too, cmake displays

-- The following features have been disabled:

 * LILV, The Lilv library, for lv2 plugins


I enclose the corresponding outputs of cmake.
I have no problems running my lv2 plugins in Reaper 6.83 on this very computer.
Sorry for the strange html code style of my eMails. On my display it looks decent, and in the rosegarden list it is barely readable. 

Greetings, Michael

Am 07.01.26 um 20:11 schrieb Ted Felix:
We've done a bit of tweaking to the way we build LV2 and that might have broken things for you.  Things to try:
1. Can you send the output of cmake?  It might show LV2 not being detected.
2. Try building and running 25.12.  Does that work ok?  That was just before the LV2-related changes. 

Ted.

On 1/7/26 4:20 AM, MST via Rosegarden-user wrote:

Hi there!
I build yesterday from the latest code version on Debian 12, 64bit.
I can not access lv2 plugins and when loading songs which use lv2 plugins, I get a message lv2 plugins not found. 
Can somebody confim? Did I miss something?
Greetings, Michael


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