Public bug reported: When upgrading a system from eoan to focal, I opened the terminal within the release upgrader because I like to watch the progress of the package installations. To my surprise, a debconf prompt popped up in the terminal.
update-manager should always be running in a configuration that uses the gnome frontend, and the release upgrader should be inheriting this setting. The libgtk3-perl package is installed. However, the environment passed to dpkg shows DEBIAN_FRONTEND=dialog is set instead. 19319 pts/7 Ds+ 0:01 /usr/bin/dpkg --force-overwrite --status-fd 58 --no-triggers --unpack --auto-deconfigure --recursive /tmp/apt-dpkg- install-MhF2Le SHELL=/bin/bash LANG=en_US.UTF-8 LANGUAGE=en LC_MONETARY=en_US.UTF-8 LC_NUMERIC=en_US.UTF-8 LC_TIME=C.UTF-8 TERM =xterm-256color COLORTERM=truecolor DISPLAY=:1 XAUTHORITY=/run/user/1000/gdm/Xauthority PATH=/usr/sbin:/usr/bin:/sbin:/bin LOGNAME=root USER=root HOME=/root PKEXEC_UID=1000 LC_PAPER=en_US.UTF-8 LC_IDENTIFICATION=en_US.UTF-8 LC_NAME=en_US.UTF-8 LC_ADDRESS=en_US.UTF-8 LC_TELEPHONE=en_US.UTF-8 LC_MEASUREMENT=en_US.UTF-8 RELEASE_UPGRADE_IN_PROGRESS=1 PYCENTRAL_FORCE_OVERWRITE=1 RELEASE_UPGRADE_MODE=desktop VTE_PTY_KEEP_FD=11 APT_LISTCHANGES_FRONTEND=none DEBIAN_FRONTEND=dialog VTE_VERSION=5802 DPKG_UNTRANSLATED_MESSAGES=1 DPKG_COLORS=never DPKG_FRONTEND_LOCKED=true ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: ubuntu-release-upgrader-core 1:19.10.15.4 ProcVersionSignature: Ubuntu 5.3.0-46.38-generic 5.3.18 Uname: Linux 5.3.0-46-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu8.8 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: ubuntu:GNOME Date: Tue Apr 7 20:53:19 2020 InstallationDate: Installed on 2019-12-23 (106 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader Symptom: ubuntu-release-upgrader UpgradeStatus: Upgraded to eoan on 2020-04-08 (0 days ago) VarLogDistupgradeTermlog: ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Medium Status: Triaged ** Affects: ubuntu-release-upgrader (Ubuntu Focal) Importance: Medium Status: Triaged ** Tags: amd64 apport-bug dist-upgrade eoan third-party-packages ** Also affects: ubuntu-release-upgrader (Ubuntu Focal) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871530 Title: on upgrade from eoan to focal, update-manager puts debconf prompts to the terminal instead of using the gnome frontend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1871530/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs