After installing KDE and playing with it a while, Cinnamon DE can't be launched. This may be caused by either Cinnamon or KDE - hence reporting it here too. Reproducible: Didn't try Steps to Reproduce: 1. Install LM 17.1 Cinnamon 2. Install `mint-meta-kde` and `kde-full` 3. Play a little around with KDE (add widgets, customize your desktop, install `amarok`) 4. Log into Cinnamon 5. `apt-get --purge autoremove mint-meta-kde kde-full` 6. reboot 7. Launch Cinnamon Actual Results: in 4. - black screen in 7. - at first time Cinnamon launches without desktop icons, after another reboot - a black screen after launching Cinnamon Expected Results: DE launches as it should In fact the version of plasma-desktop is 4:4.11.11-0ubuntu0.2. Selected unspecified since 4.11.11 is not available. Cross-reporting from here: https://github.com/linuxmint/Cinnamon/issues/4333
Seems like a configuration issue, and I don't know if KDE software is supported in Cinnamon anymore anyway. :/