- I was wrong when i said there is nothing on ardour's stdout/err. Here are the messages when I try to add drumkv1-lv2 plugin:
(ardour-8.10.0~ds:7987): GLib-GObject-CRITICAL **: 08:16:44.166: cannot register existing type 'GtkWidget'(ardour-8.10.0~ds:7987): GLib-GObject-CRITICAL **: 08:16:44.166: cannot add class private field to invalid type '<invalid>'(ardour-8.10.0~ds:7987): GLib-GObject-CRITICAL **: 08:16:44.166: cannot add private field to invalid (non-instantiatable) type '<invalid>'(ardour-8.10.0~ds:7987): GLib-GObject-CRITICAL **: 08:16:44.166: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed(ardour-8.10.0~ds:7987): GLib-GObject-CRITICAL **: 08:16:44.166: cannot register existing type 'GtkBuildable'(ardour-8.10.0~ds:7987): GLib-GObject-CRITICAL **: 08:16:44.166: g_type_interface_add_prerequisite: assertion 'G_TYPE_IS_INTERFACE (interface_type)' failed(ardour-8.10.0~ds:7987): GLib-CRITICAL **: 08:16:44.166: g_once_init_leave_pointer: assertion 'result != 0' failed(ardour-8.10.0~ds:7987): GLib-GObject-CRITICAL **: 08:16:44.166: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed(ardour-8.10.0~ds:7987): Gtk-CRITICAL **: 08:16:44.166: gtk_widget_get_style_context: assertion 'GTK_IS_WIDGET (widget)' failed(ardour-8.10.0~ds:7987): Gtk-CRITICAL **: 08:16:44.166: gtk_style_context_lookup_color: assertion 'GTK_IS_STYLE_CONTEXT (context)' failed(ardour-8.10.0~ds:7987): Gtk-CRITICAL **: 08:16:44.166: gtk_style_context_get_color: assertion 'GTK_IS_STYLE_CONTEXT (context)' failed(ardour-8.10.0~ds:7987): GLib-GObject-CRITICAL **: 08:16:44.166: cannot register existing type 'GtkWidget'(ardour-8.10.0~ds:7987): GLib-GObject-CRITICAL **: 08:16:44.166: cannot add class private field to invalid type '<invalid>'(ardour-8.10.0~ds:7987): GLib-GObject-CRITICAL **: 08:16:44.166: cannot add private field to invalid (non-instantiatable) type '<invalid>'(ardour-8.10.0~ds:7987): GLib-GObject-CRITICAL **: 08:16:44.166: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed - I tried drumkv1 lv2 in Carla, and it works well - I tried padthv1 lv2 in adrour and ardour hangs in the same way I suspect that maybe the issue is more related to ardour, maybe we should move this bug there? Also, here's a link to a ticket I submitted upstream: https://sourceforge.net/p/drumkv1/tickets/18/
