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I have been trying to update my Ubuntu but whenever I click on Upgrade, my system does the usual checks and tells me it can only do a "Partial install" which, when I accept returns this error: 

An unresolvable problem occurred while calculating the upgrade:
The package 'unity-2d' is marked for removal but it is in the 
removal blacklist.

How do I resolve it? I have rev 12.04 LTS installed

As requested, the output of (1) cat /etc/apt/sources.list (2) for X in /etc/apt/sources.list.d/*; do echo; echo; echo "** $X:"; echo; cat $X; done (3) sudo apt-get update (4) apt-get -s upgrade and (5) apt-get -s dist-upgrade are shown in this pastebin.

Eliah Kagan
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Stan
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1 Answers1

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Debian software sources may give wrong package versions, with wrong dependencies.

Wrong for Ubuntu, that is. (Similarly, Ubuntu software sources may cause problems on Debian.)

From the information you provided, the most likely cause of the problem is probably that you have Debian software sources enabled:

deb http://ftp.se.debian.org/debian stable main
deb-src http://ftp.se.debian.org/debian stable main

If you disable them, that may solve the problem. To do that, first back up sources.list:

sudo cp /etc/apt/sources.list /etc/apt/sources.list.old

Then edit it:

  • Graphically, with gksu gedit /etc/apt/sources/list, or
  • in the terminal, with: sudo nano -w /etc/apt/sources.list

Find those two lines and add # to the beginning so they read:

#deb http://ftp.se.debian.org/debian stable main
#deb-src http://ftp.se.debian.org/debian stable main

Then save the file, quit the text editor, and run:

sudo apt-get update

See if the problem is fixed.

If you deliberately added those software sources and installed software from those repositories, then please edit your question to provide details, so I can give information about how to use the software (if possible) without causing problems. It is possible to enable a repository but configure it so it's only used for a couple packages.

You have many non-working PPAs.

This is less likely to be causing the current problem, but I recommend fixing this. It's worth fixing itself, and at least it will no longer obscure whatever is causing the problem.

If you do these things, and the problem isn't fixed, please provide more information.

You posted only incomplete output from apt-get -s upgrade and apt-get -s dist-upgrade, since the output was too large to fit in the Terminal window.

So, run these commands instead:

cd ~
apt-get -s upgrade &> simulated-upgrade.log
apt-get -s dist-upgrade &> simulated-dist-upgrade.log

Then open simulated-upgrade.log in a text editor (it's in your home folder), copy its contents to the clipboard, paste it at http://paste.ubuntu.com, and provide the link. Do the same thing for simulated-dist-upgrade.log. (The best way to provide both links is to edit your question.)

Community
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Eliah Kagan
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  • Like last time you have saved the day its worked fine Thank you for the much appreciated help .... Stan – Stan Feb 16 '13 at 18:44