problems upgrading from 14.04 to 16.04

[J.L. Blom]

On 26/09/16 13:10, Colin Law wrote:
> On 26 September 2016 at 12:04, J.L. Blom <joep at neuroweave.nl> wrote:
>> _______________________________
>>
>> joep at laguna:~$ sudo apt-get -f install
>> Reading package lists... Done
>> Building dependency tree
>> Reading state information... Done
>> Correcting dependencies... failed.
>> The following packages have unmet dependencies:
>>   libstdc++6 : Depends: gcc-5-base (= 5.4.0-6ubuntu1~16.04.2) but
>> 5.4.1-2ubuntu1~14.04 is installed
>>                Breaks: libkolabxml1 (<= 1.1.0-3) but 1.0.1-0ubuntu3 is
>> installed
>>                Breaks: libstdc++6:i386 (!= 5.4.0-6ubuntu1~16.04.2) but
>> 6.2.0-3ubuntu11~14.04 is installed
>>   libstdc++6:i386 : Breaks: libstdc++6 (!= 6.2.0-3ubuntu11~14.04) but
>> 5.4.0-6ubuntu1~16.04.2 is installed
>> E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused
>> by held packages.
>> E: Unable to correct dependencies
>> ___________________________________________
>>
>> It looks like it didn't remove the old libraries but how to solve that
>> without breaking much more is my problem.
>> When I mentioned in my former mail that I solved the problem with the
>> graphics not starting and apt-get not working, that was solved by installing
>> another version of libstdc++6:amd64 by downloading
>> libstdc++6_5.4.0-6ubuntu1~16.04.2_amd64.deb and installing using dpkg. But I
>> don't know how to solve - apparently the same problem - for :i386.
> what does
> apt-cache policy gcc-5-base
> show?  It looks like that is held at the old version for some reason.
>
> Colin
>
>
>> Joep
>>
Ralf & Colin,
Thanks for the suggestions.
Ralf, I followed your suggestions. They gave nothing back, so I thought 
they had something improved but when I did "apt-get -f install" I got 
the same error result.
Colin, Your suggestion gave the following output:
____________________________
joep at laguna:~$ sudo apt-cache policy gcc-5-base
gcc-5-base:
   Installed: 5.4.1-2ubuntu1~14.04
   Candidate: 5.4.1-2ubuntu1~14.04
   Version table:
  *** 5.4.1-2ubuntu1~14.04 100
         100 /var/lib/dpkg/status
      5.4.0-6ubuntu1~16.04.2 500
         500 http://nl.archive.ubuntu.com/ubuntu xenial-updates/main 
amd64 Packages
         500 http://security.ubuntu.com/ubuntu xenial-security/main 
amd64 Packages
      5.3.1-14ubuntu2 500
         500 http://nl.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
joep at laguna:~$
I can not much with that but maybe you can tell me what it means. I have 
not much experience with troubleshooting as upgrading always went 
smoothly.I think I started updating from version 8.04 but reinstalling 
doesn't seem a good idea as I expect tol loose many packages I installed 
since then. I also updated the hardware since then twice but that did'nt 
gave any problems.
Hope this will give you clues how to proceed.
Joep