This also happens during installs of 18.04 and it causes the installation to hang at Installing grub 66%
A workaround which works for me is to switch to a console (alt-f2) and killall dmsetup, then the install completes successfully, but totally unattended installs are broken for me now. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1796853 Title: os-prober hangs with LVM and cryptsetup To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/os-prober/+bug/1796853/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs