Para obter manpages de um pacote, verifique a lista de arquivos em /usr/share/man
:
$ dpkg -L python-pip | grep 'man[0-8].*/'
/usr/share/man/man1/pip.1.gz
/usr/share/man/man1/pip2.1.gz
$ dpkg -L deja-dup | grep 'man[0-8].*/'
/usr/share/man/az/man1/deja-dup-preferences.1.gz
/usr/share/man/az/man1/deja-dup.1.gz
/usr/share/man/lv/man1/deja-dup-preferences.1.gz
/usr/share/man/lv/man1/deja-dup.1.gz
/usr/share/man/sr/man1/deja-dup-preferences.1.gz