If you look again you'll notice that the line is in fact not the same but starts with an alias whereas the line in the other bug report did not.
Now, first off, please make sure that you actually get a very ugly error window that say s "Could not start d-bus. Can you call qdbus?" at login with the canonical startkde (you can restore it by running `sudo apt-get install --reinstall kde-workspace-bin`). If not, then you are having an entirely different issue and qdbus only happens to tie into it. Once you confirmed that qdbus is in fact the culprit please copy ~/.cache/upstart/startkde.log (after a login attempt with error) to safety before fixing startkde and logging in again. Attach the file to this bug report once you fixed startkde again. After that please fix your startkde again, login and post the output of the following commands as they might give us a hint as to what exactly is wrong.: ls -lah /bin/sh dpkg -l qdbus* which qdbus QT_SELECT=qt4 qdbus --help QT_SELECT=qt5 qdbus --help qdbus --help dash -c 'alias qdbus="QT_SELECT=qt4 qdbus"; alias; qdbus --help' After that please run the the following commands. The latter one might take quite a while, nothing to worry about: sudo apt install debsums sudo debsums -sc | tee debsums.log once the last command has finished you will find a file called debsums.log in your home directory, also upload this file to the bug report. ** Changed in: kde-workspace (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1312895 Title: Cannot login into KDE after upgrade from 12.04 to 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kde-workspace/+bug/1312895/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs