** This bug is no longer a duplicate of bug 1611737 Can't upgrade from a release if ros packages are installed from ROS servers
** Changed in: ubuntu-release-upgrader (Ubuntu) Status: Invalid => In Progress ** Changed in: ubuntu-release-upgrader (Ubuntu) Status: In Progress => Fix Released ** Description changed: - I was following the instructions present here + I was following the instructions present here https://www.zdnet.com/article/how-to-upgrade-from-ubuntu-linux-16-04-to-18-04/ to upgrade. I faced some issues with sudo apt update && sudo apt upgrade. Some of my packages were broken so had to remove them. I believe the update and upgrade commands work fine now. Executing sudo do-release-upgrade does not work and I always get this message on the terminal saying "Restoring original system state". I cannot see any specific errors that could help me debug this issue. Could I please get some assistant on this? ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.27 ProcVersionSignature: Ubuntu 4.15.0-66.75~16.04.1-generic 4.15.18 Uname: Linux 4.15.0-66-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.1-0ubuntu2.21 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Thu Nov 14 07:46:55 2019 InstallationDate: Installed on 2018-09-29 (411 days ago) InstallationMedia: Ubuntu 16.04.5 LTS "Xenial Xerus" - Release amd64 (20180731) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to xenial on 2019-11-14 (0 days ago) VarLogDistupgradeAptclonesystemstate.tar.gz: Error: command ['pkexec', 'cat', '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'] failed with exit code 127: pkexec must be setuid root -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852576 Title: cannot upgrade to Ubuntu 18 from Ubuntu 16 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1852576/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs