can't upgrade from 11.04 to 11.10

[John]

When trying to upgrade from 11.04 to 11.10, this is what I get:

Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade:
E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

 This can be caused by:
 * Upgrading to a pre-release version of Ubuntu
 * Running the current pre-release version of Ubuntu
 * Unofficial software packages not provided by Ubuntu

If none of this applies, then please report this bug using the command 'ubuntu-bug update-manager' in a terminal.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: update-manager 1:0.150.3
ProcVersionSignature: Ubuntu 2.6.38-11.50-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic x86_64
Architecture: amd64
Date: Fri Oct 14 07:50:37 2011
DpkgHistoryLog.txt:

DpkgTerminalLog.txt:

GConfNonDefault:
 /apps/update-manager/check_new_release_ignore=
 /apps/update-manager/first_run=false
 /apps/update-manager/show_details=true
 /apps/update-manager/window_size=(500,600)
PackageArchitecture: all
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=en_US.UTF-8
 LANGUAGE=en_US:en
SourcePackage: update-manager
UpgradeStatus: Upgraded to natty on 2011-10-14 (0 days ago)

[Walter Garcia-Fontes (walter-garcia)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. Could you please add the log files from '/var/log/dist-upgrade/' to this bug report as separate attachments? Thanks in advance.

[John (john-mailinator)]

here they are, thanks.

btw, is there a quick manual thingy i can do in order to let my upgrade go forward or shall I just wait for an official fix ?
(i prefer to avoid a clean re-install of the os)

thanks a lot.

[Walter Garcia-Fontes (walter-garcia)]

From what I can see from the logs, it seems you had gnome-shell installed in 11.04. It may be that unistalling it will allow you to complete the upgrade, you can always install it back if you want once the upgrade has been completed.

[John (john-mailinator)]

Thanks ! Can you please tell me how to do that ?

I don't seem to find this package... thanks!!

[Walter Garcia-Fontes (walter-garcia)]

It would be

sudo apt-get remove gnome-shell

[John (john-mailinator)]

yeah, i tried it, but this is what I get:

$ sudo apt-get remove gnome-shell
[sudo] password for john:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Virtual packages like 'gnome-shell' can't be removed
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

:(

[Walter Garcia-Fontes (walter-garcia)]

It seems that you upgraded to 11.04 just shortly before trying to upgrade to 11.10. But, had you installed or tried to install gnome-shell in 11.04? There are some references to it in the logs you provided, that's why I ask.

[John (john-mailinator)]

No, I have not tried to install gnome-shell.

I was running 10.10 for quite some time, and then decided to upgrade to 11.04 and then immediately (after a clean reboot) to upgrade to 11.10.

Thank you for your help.

[Walter Garcia-Fontes (walter-garcia)]

Have you tried to upgrade again? It seems that some overloaded mirrors where creating misleading errors just after releasing 11.10.

[John (john-mailinator)]

Yeah, I have re-tried several times (including today), to no avail :(

[Walter Garcia-Fontes (walter-garcia)]

Can you post again the logs of /var/log/dist-upgrade for one of these recent failures?

[John (john-mailinator)]

Attached, please tell me if you need anything else.

Please also tell me if you can think of anything I can do to let the installation go forward. thanks !

[Walter Garcia-Fontes (walter-garcia)]

Try to uninstall nspluginviewer and see if the update proceeds.

[John (john-mailinator)]

$ sudo apt-get remove nspluginviewer
[sudo] password for john:
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package nspluginviewer

:(

[John (john-mailinator)]

ok, removing libcupsys2 did the trick. thanks !