unity blocks saucy upgrade

[Robert Hardy]

Upgrade failed from latest raring to saucy development. Success was expected. Fortunately it was done in a sandbox so no damage occured.

"Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade:
The package 'unity' is marked for removal but it is in the removal
blacklist."

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: ubuntu-release-upgrader-core 1:0.192.12
ProcVersionSignature: Ubuntu 3.8.0-30.44-generic 3.8.13.6
Uname: Linux 3.8.0-30-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: amd64
CrashDB: ubuntu
Date: Fri Aug 23 22:49:54 2013
InstallationDate: Installed on 2010-05-23 (1188 days ago)
InstallationMedia: Ubuntu-Server 10.04 LTS "Lucid Lynx" - Release amd64 (20100427)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_CA.UTF-8
 SHELL=/bin/tcsh
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to raring on 2013-08-24 (0 days ago)

[Brian Murray (brian-murray)]

I believe this is because you've installed unity on a Xubuntu system, and then during the upgrade process unity is selected for removal but it is on the blacklist so the upgrade fails.

[Robert Hardy (rhardy)]

I started from a server install of 10.04 on which I added Xubuntu. Unity
must have gotten picked up along the upgrade path.

Rob

------- Original message -------
> From: Brian Murray <email address hidden>
> To: <email address hidden>
> Sent: 2013-08-27, 16:41
>
> I believe this is because you've installed unity on a Xubuntu system,
> and then during the upgrade process unity is selected for removal but it
> is on the blacklist so the upgrade fails.
>
> ** Changed in: ubuntu-release-upgrader (Ubuntu)
> Importance: Undecided => Low
>

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Mike Robinson (launchpad-multiwebinc)]

The unity package should be removed from the blacklist during distribution upgrade (or at least when Ubuntu is not installed).

A workaround is to manually remove unity, but since the error message only shows up in the log files it is not at all intuitive to fix it.