Failed update 18.04 to 20.04 (An unresolvable problem occurred while …)

Failed update 18.04 to 20.04 (An unresolvable problem occurred while …)


Ran Code: sudo do-release-upgrade -d and got to: Code: Could not determine the upgrade An unresolvable problem occurred while calculating the upgrade. This was likely caused by: * Unofficial software packages not provided by Ubuntu Please use the tool ‘ppa-purge’ from the ppa-purge package to remove software from a Launchpad PPA and try the upgrade again. If none of this applies, then please report this bug using the command ‘ubuntu-bug ubuntu-release-upgrader-core’ in a terminal. If you want to investigate this yourself the log files in ‘/var/log/dist-upgrade’ will contain details about the upgrade. Specifically, look at ‘main.log’ and ‘apt.log’. main log shows this: Code: 2020-07-15 06:45:24,239 INFO Using config files ‘[‘./DistUpgrade.cfg.bionic’]’2020-07-15 06:45:24,239 INFO uname information: ‘Linux shan-Aspire-XC-780 4.15.0-111-generic #112-Ubuntu SMP Thu Jul 9 20:32:34 UTC 2020 x86_64’ 2020-07-15 06:45:24,693 INFO apt version: ‘1.6.12ubuntu0.1’ 2020-07-15 06:45:24,693 INFO python version: ‘3.6.9 (default, Apr 18 2020, 01:56:04) [GCC 8.4.0]’ 2020-07-15 06:45:24,696 INFO release-upgrader version ‘20.04.19’ started 2020-07-15 06:45:24,708 INFO locale: ‘en_GB’ ‘UTF-8’ 2020-07-15 06:45:24,771 INFO screen could not be run 2020-07-15 06:45:24,846 DEBUG Using ‘DistUpgradeViewText’ view 2020-07-15 06:45:24,891 DEBUG enable dpkg –force-overwrite 2020-07-15 06:45:24,925 DEBUG creating statefile: ‘/var/log/dist-upgrade/apt-clone_system_state.tar.gz’ 2020-07-15 06:45:31,112 DEBUG lsb-release: ‘bionic’ 2020-07-15 06:45:31,113 DEBUG _pythonSymlinkCheck run 2020-07-15 06:45:31,136 DEBUG openCache() 2020-07-15 06:45:31,136 DEBUG quirks: running PreCacheOpen 2020-07-15 06:45:31,136 DEBUG running Quirks.PreCacheOpen 2020-07-15 06:45:31,881 DEBUG /openCache(), new cache size 98456 2020-07-15 06:45:31,881 DEBUG need_server_mode(): can not find a desktop meta package or key deps, running in server mode 2020-07-15 06:45:31,881 DEBUG checkViewDepends() 2020-07-15 06:45:31,911 DEBUG running doUpdate() (showErrors=False) 2020-07-15 06:45:34,329 DEBUG openCache() 2020-07-15 06:45:35,072 DEBUG /openCache(), new cache size 98456 2020-07-15 06:45:35,072 DEBUG doPostInitialUpdate 2020-07-15 06:45:35,072 DEBUG quirks: running focalPostInitialUpdate 2020-07-15 06:45:35,072 DEBUG running Quirks.focalPostInitialUpdate 2020-07-15 06:45:36,653 DEBUG MetaPkgs: 2020-07-15 06:45:44,432 DEBUG Foreign: adobe-flash-properties-gtk adobe-flashplugin 2020-07-15 06:45:44,432 DEBUG Obsolete: atunes brave-browser brave-keyring carla-bridge-win32 carla-bridge-wine32:i386 carla-data carla-git carla-lv2 carla-vst dpluzz dr14tmeter esound-common flacon…


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