Same pb with Kubuntu 16.04. Have nvidea card but not using their driver. A similar (same?) but is reported "resolved fixed" at https://bugs.kde.org/show_bug.cgi?id=355928, but there is no indication of how to get the fix. I did a dist-upgrade yesterday.
** Bug watch added: KDE Bug Tracking System #355928 https://bugs.kde.org/show_bug.cgi?id=355928 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1560804 Title: kscreen reports change of primary screen without apparent reason To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1560804/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

