Public bug reported: Some system file system (proc and sys) mounted with 'mount --bind' on an host system could not be unmounted by the installer. Trying to go back as proposed by the installer causes the installation failure.
ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: ubiquity 18.04.14 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CasperVersion: 1.394 Date: Thu Jul 5 18:06:38 2018 InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/xubuntu.seed boot=casper quiet splash --- LiveMediaBuild: Xubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) SourcePackage: ubiquity UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: ubiquity (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic ubiquity-18.04.14 xubuntu -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1780226 Title: Unable to umount partition mounted in chroot mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1780226/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs