Turns out, a lingering install of chromium-browser-l10n may have caused the problem:
# apt --fix-broken install Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: fonts-hack-ttf gcc-8-base:i386 gir1.2-ibus-1.0 gnustep-base-common gnustep-base-runtime gnustep-common gstreamer1.0-gl guile-2.0-libs kio-gdrive libargon2-0 libboost-date-time1.65.1 (snip) vlc-plugin-visualization x11proto-damage-dev x11proto-fixes-dev Use 'apt autoremove' to remove them. The following packages will be REMOVED: chromium-browser-l10n 0 upgraded, 0 newly installed, 1 to remove and 618 not upgraded. 5 not fully installed or removed. After this operation, 69.6 kB disk space will be freed. Do you want to continue? [Y/n] (Reading database ... 322207 files and directories currently installed.) Removing chromium-browser-l10n (1:85.0.4183.83-0ubuntu0.20.04.2) ... Setting up lm-sensors (1:3.6.0-2ubuntu1) ... Setting up libglew2.1:amd64 (2.1.0-4) ... Setting up sysstat (12.2.0-2) ... Installing new version of config file /etc/init.d/sysstat ... Installing new version of config file /etc/sysstat/sysstat ... Installing new version of config file /etc/sysstat/sysstat.ioconf ... Removing obsolete conffile /etc/profile.d/sysstat.sh ... Setting up libglew-dev:amd64 (2.1.0-4) ... Processing triggers for systemd (245.4-4ubuntu3.3) ... Processing triggers for man-db (2.9.1-1) ... Processing triggers for ureadahead (0.100.0-21) ... ureadahead will be reprofiled on next reboot Processing triggers for libc-bin (2.31-0ubuntu9.1) ... Correcting dependencies... Done The following packages were automatically installed and are no longer required: chromium-browser-l10n chromium-codecs-ffmpeg-extra fonts-hack-ttf gcc-8-base:i386 gir1.2-ibus-1.0 gnustep-base-common gnustep-base-runtime gnustep-common gstreamer1.0-gl guile-2.0-libs (snip) vlc-plugin-samba vlc-plugin-video-splitter vlc-plugin-visualization x11proto-damage-dev x11proto-fixes-dev Use 'apt autoremove' to remove them. The following additional packages will be installed: chromium-browser The following packages will be upgraded: chromium-browser 1 upgraded, 0 newly installed, 0 to remove and 617 not upgraded. 5 not fully installed or removed. Need to get 0 B/48.3 kB of archives. After this operation, 234 MB disk space will be freed. Do you want to continue? [Y/n] ^C # apt remove chromium-browser Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt --fix-broken install' to correct these. The following packages have unmet dependencies: chromium-browser-l10n : Depends: chromium-browser (>= 1:85.0.4183.83-0ubuntu0.20.04.2) but it is not going to be installed E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution). root@routert:~# apt --fix-broken install^C root@routert:~# apt remove chromium-browser-l10n Reading package lists... Done Building dependency tree Reading state information... Done # Somehow, apt still wanted to upgrade the chromium-browser packgage, so I removed that: # apt remove chromium-browser And after a dist-upgrade all appears to be working now. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. https://bugs.launchpad.net/bugs/1907798 Title: Crash during do-release-upgrade Status in chromium-browser package in Ubuntu: New Bug description: While doing a do-release upgrade from 18.04 to 20.04, I got an error. The script wanted to install the Chromium snap and apparently while doing that, it failed. Original summary generated by Launchpad: package chromium-browser 87.0.4280.66-0ubuntu0.18.04.1 failed to install/upgrade: new chromium-browser package pre-installation script subprocess returned error exit status 1 ProblemType: Package DistroRelease: Ubuntu 20.04 Package: chromium-browser 87.0.4280.66-0ubuntu0.18.04.1 ProcVersionSignature: Ubuntu 4.15.0-126.129-generic 4.15.18 Uname: Linux 4.15.0-126-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.9-0ubuntu7.20 Architecture: amd64 DRM.card0-HDMI-A-1: enabled: disabled dpms: On status: disconnected edid-base64: modes: DRM.card0-HDMI-A-2: enabled: disabled dpms: On status: disconnected edid-base64: modes: DRM.card0-VGA-1: enabled: disabled dpms: Off status: connected edid-base64: modes: 1024x768 800x600 800x600 848x480 640x480 Date: Fri Dec 11 11:37:46 2020 Desktop-Session: 'None' 'None' '/usr/local/share:/usr/share:/var/lib/snapd/desktop' Env: 'None' 'None' ErrorMessage: new chromium-browser package pre-installation script subprocess returned error exit status 1 InstallationDate: Installed on 2017-12-03 (1103 days ago) InstallationMedia: Kubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801) InstalledPlugins: Load-Avg-1min: 0.65 Load-Processes-Running-Percent: 0.2% MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-126-generic root=UUID=480b8792-a570-441d-b8c6-27b031b55c17 ro quiet splash vt.handoff=1 Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2 PythonDetails: /usr/bin/python2.7, Python 2.7.18, python-is-python2, 2.7.17-4 SourcePackage: chromium-browser Title: package chromium-browser 87.0.4280.66-0ubuntu0.18.04.1 failed to install/upgrade: new chromium-browser package pre-installation script subprocess returned error exit status 1 UpgradeStatus: Upgraded to focal on 2020-12-11 (0 days ago) dmi.bios.date: 01/11/2016 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P2.60 dmi.board.name: FM2A88M Pro3+ dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.60:bd01/11/2016:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnFM2A88MPro3+:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: To Be Filled By O.E.M. dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. modified.conffile..etc.default.chromium-browser: [deleted] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1907798/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp