I just upgraded from Jessie to Stretch. The dist-upgrade went smoothly
until I rebooted into the new system then things went wrong.
The first thing I noticed was that it complained when trying to start
up KDE. It said the kde-plasma-desktop was invalid (or similar) and
switched me into the default Gnome desktop.
Interestingly, I still had konsole so I used that to try to install
task-kde-desktop. That failed with dependency errors so I tried
lower-level kde packages and eventually got only a half-dozen packages
that needed installing for kde-standard. Once I installed them and
kde-standard, I was able to install the full task.
Except I couldn't start konsole or icedove when I rebooted and
selected kde as the desktop. Iceweasel started OK as did gkrellm (two
other things on my desktop session).
Trying the same tactic as before, I eventually got to trying to
install libgnutls-deb0-28. When I ask apt-get to install it however,
it decides it needs to remove pretty much everything kde and
libreoffice - 390 packages in all.
Any advice on how I should proceed other than abandoning kde?