Public bug reported:
I am trying to update from Kubuntu 18.04 to 20.04. This is the command:
`sudo do-release-upgrade -dm desktop`
My system is:
```
Description: Ubuntu 18.04.5 LTS
Release: 18.04
```
Unfortunately I keep getting this error:
```
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'.
```
Reading the main.log file I keep getting problems about kubuntu-desktop
package:
```
2020-09-23 19:38:30,750 ERROR NvidiaDetection returned a error: invalid literal
for int() with base 10: 'server'
2020-09-23 19:38:30,754 DEBUG Installing 'baloo-kf5' (kubuntu-desktop
PostUpgradeInstall rule)
2020-09-23 19:38:30,754 DEBUG Removing 'powermanagement-interface'
(kubuntu-desktop PostUpgradeRemove rule)
2020-09-23 19:38:30,754 DEBUG Removing 'guidance-power-manager'
(kubuntu-desktop PostUpgradeRemove rule)
2020-09-23 19:38:30,754 DEBUG Removing 'kde-guidance-powermanager'
(kubuntu-desktop PostUpgradeRemove rule)
2020-09-23 19:38:30,755 DEBUG Removing 'kmix' (kubuntu-desktop
PostUpgradeRemove rule)
2020-09-23 19:38:30,755 DEBUG quirks: running PostDistUpgradeCache
2020-09-23 19:38:30,755 DEBUG running Quirks.PostDistUpgradeCache
2020-09-23 19:38:30,986 DEBUG Comparing 5.4.0-42 with
2020-09-23 19:38:30,986 DEBUG Comparing 5.4.0-48 with 5.4.0-42
2020-09-23 19:38:31,099 INFO installing linux metapackage: linux-generic
2020-09-23 19:38:31,099 DEBUG Installing 'linux-generic' (linux metapackage may
have been accidentally uninstalled)
2020-09-23 19:38:31,135 DEBUG Marking 'kubuntu-desktop' for upgrade
2020-09-23 19:38:31,323 WARNING Can't mark 'kubuntu-desktop' for upgrade
(E:Unable to correct problems, you have held broken packages.)
2020-09-23 19:38:31,747 ERROR Dist-upgrade failed: 'Broken packages after
upgrade: kubuntu-desktop'
```
I have already tried to:
- uninstall the package before upgrade
- reinstall the package before upgrade
- update the package before upgrade
What can I do?
Thanks!
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.38
ProcVersionSignature: Ubuntu 5.4.0-48.52~18.04.1-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.17
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: KDE
Date: Wed Sep 23 19:38:46 2020
InstallationDate: Installed on 2019-11-23 (305 days ago)
InstallationMedia: Kubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64
(20190805)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-09-23 (0 days ago)
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic dist-upgrade
** Attachment added: "main.log"
https://bugs.launchpad.net/bugs/1896810/+attachment/5413562/+files/main.log
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https://bugs.launchpad.net/bugs/1896810
Title:
Cannot upgrade Kubuntu from 18.04 to 20.04
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