I was able to reproduce this with a plugin from LSP Plugins. That said, the Ardour team is on the verge of releasing Ardour 6.0, and is not interested in fixing bugs in 5.12. This means this bug probably will see no response, but I will check with the team and report back.
** No longer affects: calf (Ubuntu) ** Changed in: ardour (Ubuntu) Importance: Undecided => Medium ** Changed in: ardour (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Studio Bugs, which is subscribed to calf in Ubuntu. Matching subscriptions: Ubuntu Studio Bugs, ubuntustudio-bugs: ardour https://bugs.launchpad.net/bugs/1877806 Title: ardour crashes when saving lv2 plugin preset Status in ardour package in Ubuntu: Confirmed Bug description: The few lv2 plugins I have tried all crash ardour when I click on "save" to save the preset. Clicking Add to create a new plugin doesn't crash, but it also does not save the preset. If you load a plugin preset already created and then click save, you end up wiping out the contents of the preset direcoty in ~/.lv2. The .ttl files are deleted and you end up with an empty directoy. The only thing printed on the console when this happens is this: CALF DEBUG: instance 0x55c00d102860 data 0x55c01ca1cf10 CALF DEBUG: calf 0x7f8d31f7b0f0 cpi 0x7f8d31783ca0 Segmentation fault (core dumped) AFAIK, teh preset add and save functions work for ladspa plugins. -Don ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: ardour 1:5.12.0-3ubuntu4 ProcVersionSignature: Ubuntu 5.4.0-29.33-lowlatency 5.4.30 Uname: Linux 5.4.0-29-lowlatency x86_64 ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: XFCE Date: Sat May 9 21:39:09 2020 InstallationDate: Installed on 2020-04-26 (13 days ago) InstallationMedia: Ubuntu-Studio 20.04 LTS "Focal Fossa" - Release amd64 (20200423) SourcePackage: ardour UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ardour/+bug/1877806/+subscriptions -- Mailing list: https://launchpad.net/~ubuntustudio-bugs Post to : ubuntustudio-bugs@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntustudio-bugs More help : https://help.launchpad.net/ListHelp