update-manager crashed with TypeError in refresh_cache(): Can't convert 'SystemError' object to str implicitly

[Rainer Rohde]

Keeps crashing.

I get the following error message on the command line:

Calculating upgrade... Failed
The following packages have unmet dependencies:
 xserver-xorg : Depends: xserver-xorg-video-all but it is not going to be installed or
                         xorg-driver-video
                Depends: xserver-xorg-input-all but it is not going to be installed or
                         xorg-driver-input
                Depends: xserver-xorg-input-evdev but it is not going to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: update-manager 1:0.168
ProcVersionSignature: Ubuntu 3.5.0-5.5-generic 3.5.0-rc7
Uname: Linux 3.5.0-5-generic x86_64
ApportVersion: 2.4-0ubuntu6
Architecture: amd64
CrashCounter: 1
Date: Tue Jul 31 09:45:15 2012
ExecutablePath: /usr/bin/update-manager
GsettingsChanges:
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'launch-time' b'1343745858'
 b'com.ubuntu.update-manager' b'window-height' b'254'
 b'com.ubuntu.update-manager' b'window-width' b'640'
InterpreterPath: /usr/bin/python3.2mu
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/bin/update-manager
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/update-manager']
SourcePackage: update-manager
Title: update-manager crashed with TypeError in refresh_cache(): Can't convert 'SystemError' object to str implicitly
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Robert Roth (evfool)]

 Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug #1031280, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.

[Launchpad Janitor (janitor)]

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

[nameremoved (errorwhywhywhy-deactivatedaccount)]

I also experience this bug when using the GUI software updater.

There seems to be a temporary workaround for quantal where updates can be recieved by upgrading via the command line.