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[Erich Eickmeyer <erich@xxxxxxxxxxxxxxxxxx>]

Remove calf-ladspa (sudo apt remove calf-ladspa) to fix.

The ladspa version of the Calf plugins were never meant to be exposed to
other applications besides LMMS, but the packager of LMMS in Debian
decided to expose the ladpsa version to the rest of the system against
the advice of both the Calf and LMMS developers.

This is a known bug upstream in Debian that has been fixed and will land
in 19.04.

** Changed in: lmms (Ubuntu)
       Status: New => Fix Released

** Also affects: lmms (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: lmms (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1814155

Title:
  Ardour crashes using calf compressor plugin

Status in ardour package in Ubuntu:
  Fix Released
Status in lmms package in Ubuntu:
  Fix Released

Bug description:
  lsb_release -rd
  Description:	Ubuntu 18.10
  Release:	18.10

  apt-cache policy ardour
  ardour:
    Installed: 1:5.12.0-3
    Candidate: 1:5.12.0-3
    Version table:
   *** 1:5.12.0-3 500
          500 http://us.archive.ubuntu.com/ubuntu cosmic/universe amd64 Packages
          100 /var/lib/dpkg/status

  apt-cache policy calf*
  calf-plugins:
    Installed: 0.0.60-5
    Candidate: 0.0.60-5
    Version table:
   *** 0.0.60-5 500
          500 http://us.archive.ubuntu.com/ubuntu cosmic/universe amd64 Packages
          100 /var/lib/dpkg/status
  calf-ladspa:
    Installed: 1.1.3-7.1
    Candidate: 1.1.3-7.1
    Version table:
   *** 1.1.3-7.1 500
          500 http://us.archive.ubuntu.com/ubuntu cosmic/universe amd64 Packages
          100 /var/lib/dpkg/status

  What I expected:  Use of plugin for compression.

  What I got:  Segfault in calf.so

  ardour-5.12.0[2204]: segfault at 26d0c1360 ip 00007f797dc9c850 sp
  00007fff57485b30 error 6 in calf.so[7f797dbea000+109000]

  This is a fresh install of Ubuntu 18.10 in a VM, with ubuntustudio-
  audio installed.

  Upon inspection, there are two versions of calf.so installed:

  chick@dd:~$ ls -l /usr/lib/ladspa/calf.so
  -rw-r--r-- 1 root root 1179344 Mar  9  2018 /usr/lib/ladspa/calf.so
  chick@dd:~$ ls -l /usr/lib/calf/calf.so
  -rw-r--r-- 1 root root 2354968 Jul 30  2017 /usr/lib/calf/calf.so
  chick@dd:~$ 

  Removing the /usr/lib/ladspa/calf.so and replacing with a link to
  /usr/lib/calf/calf.so solves the problem.

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