apt-get errors after TeX Live 2012 update with tlmgr

Solution 1:

Finally, I uninstalled all TexLive-related packages which let the error messages disappear. Here is what I did ...

sudo apt-get remove tex-common texlive-base texlive-binaries texlive-common \
  texlive-doc-base texlive-latex-base texlive-local texlive-latex-base-doc
sudo apt-get autoremove
sudo apt-get autoclean

I will probably use the advertised texlive-backports PPA to reinstall TexLive.

I also found out that the MANPATH problem originated from a custom configuration I made somewhen. This was indirectly loaded from my .zshrc file.

# TexLive 2012
export MANPATH=/usr/local/texlive/2012/texmf/doc/man