Hi Palica, Got new clue and am sure we are close to the solution now. On the SDDM login page I noticed down on the left corner the session switcher: clicking on it was selected "X" session, I switched to "Plasma" session and it started but coming out the following message:   All shell packages missing. This is an installation issue, please contact your distribution Clicking "Ok" on the message black screen comes out. ======================================================