Sometimes when closing the GUI window of a LV2 plugin (notably GxAmplifier) ardour freezes for several seconds then crashes with this at the output:
[…]
lilv_world_add_plugin(): warning: … found in file:///opt/Ardour-8.12.0/lib/LV2/reasonablesynth.lv2/
lilv_world_add_plugin(): warning: … and file:///usr/lib/lv2/reasonablesynth.lv2/ (ignored)
lilv_world_add_plugin(): warning: Duplicate plugin urn:ardour:a-reverb
lilv_world_add_plugin(): warning: … found in file:///opt/Ardour-8.12.0/lib/LV2/a-reverb.lv2/
lilv_world_add_plugin(): warning: … and file:///usr/lib/lv2/a-reverb.lv2/ (ignored)
VST3 not a valid bundle: ‘/home/user/.vst3/yabridge_/sforzando.vst3/Contents/x86_64-win/sforzando.vst3’
LANG: en
Locale not in resources - use default
using block size: 128
mlock 840164 bytes
using block size: 128
mlock 840164 bytes
using block size: 128
mlock 840164 bytes
using block size: 128
mlock 840164 bytes
using block size: 128
mlock 840164 bytes
using block size: 128
mlock 840164 bytes
The program ‘ardour-8.12.0’ received an X Window System error.
This probably reflects a bug in the program.
The error was ‘RenderBadGlyph (invalid Glyph parameter)’.
(Details: serial 24460 error_code 146 request_code 139 minor_code 22)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the --sync command line
option to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)
Segmentation fault (core dumped)