Public bug reported:
An upgrade from Ubuntu Mate 18.04 to 20.04 fails.
/var/log/dist-upgrade/main.log shows :
2020-05-01 14:53:13,658 DEBUG need_server_mode(): run in 'desktop' mode,
(because of key deps for 'ubuntu-desktop')
2020-05-01 14:58:12,251 ERROR Dist-upgrade failed: 'E:Error,
pkgProblemResolver::Resolve generated breaks, this may be caused by held
packages.'
Running
apt remove ubuntu-desktop
results in
Package 'ubuntu-desktop' is not installed, so not removed
So ubuntu-desktop is not installed ...
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.37
ProcVersionSignature: Ubuntu 4.15.0-99.100-generic 4.15.18
Uname: Linux 4.15.0-99-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.20.9-0ubuntu7.14
Architecture: amd64
CrashDB: ubuntu
Date: Fri May 1 15:02:56 2020
InstallationDate: Installed on 2015-06-14 (1782 days ago)
InstallationMedia: Ubuntu MATE 14.04.1 "Trusty Tahr" - final amd64 (20141111)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-05-01 (0 days ago)
VarLogDistupgradeTermlog:
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic dist-upgrade
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https://bugs.launchpad.net/bugs/1876298
Title:
Upgrade from Ubuntu Mate 18.04 to 20.04 fails
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