gsettings-desktop-schemas : Breaks: mutter (< 3.31.4) but 3.28.4-0ubuntu18.04.2 is to be installed

[Ian Russel Adem]

I was about to upgrade ubuntu 18 to ubuntu 20, but it says “Your python3 install is corrupted. Please fix the '/usr/bin/python3'”, So i tried to run sudo ln -sf /usr/bin/python2.7 /usr/bin/python as suggested in https://askubuntu.com/questions/1185813/how-to-fix-ubuntu-19-04-cannot-upgrade-to-19-10-error-your-python3-install-is. But i got more errors

The following packages have unmet dependencies:
 gsettings-desktop-schemas : Breaks: mutter (< 3.31.4) but 3.28.4-0ubuntu18.04.2 is to be installed
 libgirepository-1.0-1 : Breaks: python-gi (< 3.34.0-4~) but 3.26.1-2ubuntu1 is to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

sudo ln -sf /usr/bin/python2.7 /usr/bin/python

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: mutter 3.28.4-0ubuntu18.04.2
ProcVersionSignature: Ubuntu 5.4.0-42.46~18.04.1-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.16
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Aug 11 20:38:08 2020
InstallationDate: Installed on 2020-02-08 (184 days ago)
InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
SourcePackage: mutter
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[Georg Abenthung (georg-0)]

Same here.

[Foobar (fruityspam)]

To be clear, I have since successfully upgraded but done so by:

0. (running apt-get update, dist-upgrade, etc to prepare)
1. deinstalling (via apt-get) gdm3
2. booting into recovery mode & initiating networking
3. running do-release-upgrade
4. restarting the system.

I don't think I can exactly 'recommend' this way of doing it, but for me it was successful.

[Ian Russel Adem (ianrussel)]

For me, as far I remember, to fix the issue on my local machine, I have to
remove python and reinstalled it.It seems that after upgrading ubuntu18 to
ubuntu focal, some python 2 footprints still remains, I am not sure if it
was the cause of issue but after removing python and purging both python2
and the newly installed python 3, and reinstalled python3, It works.

On Thu, 1 Oct 2020 at 00:25, Foobar <email address hidden> wrote:

> To be clear, I have since successfully upgraded but done so by:
>
> 0. (running apt-get update, dist-upgrade, etc to prepare)
> 1. deinstalling (via apt-get) gdm3
> 2. booting into recovery mode & initiating networking
> 3. running do-release-upgrade
> 4. restarting the system.
>
> I don't think I can exactly 'recommend' this way of doing it, but for me
> it was successful.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1891165
>
> Title:
> gsettings-desktop-schemas : Breaks: mutter (< 3.31.4) but
> 3.28.4-0ubuntu18.04.2 is to be installed
>
> Status in gsettings-desktop-schemas package in Ubuntu:
> Confirmed
>
> Bug description:
> I was about to upgrade ubuntu 18 to ubuntu 20, but it says “Your python3
> install is corrupted. Please fix the '/usr/bin/python3'”, So i tried to run
> sudo ln -sf /usr/bin/python2.7 /usr/bin/python as suggested in
> https://askubuntu.com/questions/1185813/how-to-fix-ubuntu-19-04-cannot-upgrade-to-19-10-error-your-python3-install-is.
> But i got more errors
>
>
> The following packages have unmet dependencies:
> gsettings-desktop-schemas : Breaks: mutter (< 3.31.4) but
> 3.28.4-0ubuntu18.04.2 is to be installed
> libgirepository-1.0-1 : Breaks: python-gi (< 3.34.0-4~) but
> 3.26.1-2ubuntu1 is to be installed
> E: Error, pkgProblemResolver::Resolve generated breaks, this may be
> caused by held packages.
>
> sudo ln -sf /usr/bin/python2.7 /usr/bin/python
>
> ProblemType: Bug
> DistroRelease: Ubuntu 20.04
> Package: mutter 3.28.4-0ubuntu18.04.2
> ProcVersionSignature: Ubuntu 5.4.0-42.46~18.04.1-generic 5.4.44
> Uname: Linux 5.4.0-42-generic x86_64
> ApportVersion: 2.20.9-0ubuntu7.16
> Architecture: amd64
> CurrentDesktop: ubuntu:GNOME
> Date: Tue Aug 11 20:38:08 2020
> InstallationDate: Installed on 2020-02-08 (184 days ago)
> InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64
> (20190805)
> SourcePackage: mutter
> UpgradeStatus: No upgrade log present (probably fresh install)
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/gsettings-desktop-schemas/+bug/1891165/+subscriptions
>

[Evgenij Nikulin (workjob)]

Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 gsettings-desktop-schemas : Breaks: mutter (< 3.31.4) but 3.28.4+git20200505-0ubuntu18.04.2 is to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

[Evgenij Nikulin (workjob)]

https://bugs.launchpad.net/ubuntu/+source/gsettings-desktop-schemas/+bug/1891165/comments/6

I had same error when i tried to install smbclient on Ubuntu 18.04.
sudo apt install smbclient

[Launchpad Janitor (janitor)]

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

[bmoore (beau-moore)]

This was solved for me by doing `apt full-upgrade`.

`man apt` describes:

`upgrade is used to install available upgrades of all packages currently installed on the system from the, but existing packages will never be removed. If an upgrade for a package requires the remove of an installed package the upgrade for this package isn't performed.`