Comment 11 for bug 1264887

Obviously the keydependencies have not been found even though kdm was installed. Or is it required to find both (all) keydependencies? Then the explanation would be that kubuntu-artwork seems not to be available from the kubuntu-backports-ppa and therefore wasn't installed.

Would it help if I send a list of the installed packages from before the upgrade?

I made some more experiments. I used the default installation of Kubuntu 12.04 and then upgraded to the kubuntu-backports-ppa. Then I upgraded to 14.04 and the result was that lightdm was installed, no matter if kubuntu-desktop was installed or not.

Then I removed the other packages which were not installed on the system which produced the bug in question. The result of the upgrade to 14.04 was that kdm was removed and lightdm was not installed. I had a closer look at the packages and found that ubuntu-minimal and ubuntu-standard were not installed, so I repeated the experiment with these packages included, but the result stayed the same (no display manager).