How to find out why packages are "held back"

[Markus Schönhaber]

stan wrote:

> I have one machine at work on Gusty thta seems to not to wnat to upgrade some packages:
> 
> Reading package lists... Done
> Building dependency tree       
> Reading state information... Done
> The following packages have been kept back:
>   linux-headers-generic linux-image-generic linux-restricted-modules-generic
>   openssh-client openssh-server ssl-cert
> 
> How can I fix this?

Generally, packages are kept back if updating them would require other
packages to be installed/uninstalled. Do something like
aptitude -s dist-upgrade
to see what would be done additionally on updating the above packages.

Regards
  mks