Removing libomp5 after adjusting sources.list from bionic to focal allows the upgrade to calculate.
bdmurray@clean-bionic-amd64:~$ sudo apt-get remove libomp5 Reading package lists... Done Building dependency tree Reading state information... Done Starting pkgProblemResolver with broken count: 1 Starting 2 pkgProblemResolver with broken count: 1 Investigating (0) libomp-dev:amd64 < 5.0.1-1 -> 1:10.0-50~exp1 @ii umU Ib > Broken libomp-dev:amd64 Depends on libomp-10-dev:amd64 < none | 1:10.0.0-4ubuntu1 @un uH > (>= 10~) Considering libomp-10-dev:amd64 0 as a solution to libomp-dev:amd64 0 Re-Instated libomp5-10:amd64 Re-Instated gcc-10-base:amd64 Re-Instated libgcc-s1:amd64 Re-Instated libomp-10-dev:amd64 Re-Instated libomp-dev:amd64 Done The following additional packages will be installed: gcc-10-base libgcc-s1 libomp-10-dev libomp-dev libomp5-10 Suggested packages: libomp-10-doc The following packages will be REMOVED: libomp5 The following NEW packages will be installed: gcc-10-base libgcc-s1 libomp-10-dev libomp5-10 The following packages will be upgraded: libomp-dev 1 upgraded, 4 newly installed, 1 to remove and 1409 not upgraded. Need to get 411 kB of archives. After this operation, 1,863 kB of additional disk space will be used. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886748 Title: upgrade from 18.04 to 20.04 fails to calculate with clang-6.0 and pocl-opencl-icd installed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1886748/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs