Hi. I have Debian 8 64bit machine which formerly had MATE desktop. Yesterday i installed KDE5 using this link: http://media-opensource.blogspot.co.il/ ... stall.html
i cannot login to KDE session. I tried to install both Slim and KDM but they don't see nothing except MATE session. Slim is configured to autodetect new DEs.
What did i do wrong? Do i have to install old KDE4 before 5 or any other solution?
Thank u in advance, friends!

It looks like you're missing the session file that allows Plasma 5 (there's no "KDE5") to start. You may want to enquire to whoever makes these packages.