Comment 3 for bug 1306890

I'm still seeing this bug still in my fully updated Ubuntu 16.04 alpha. I can recreate it every time.

When I start my laptop, it detects the external 2560x1080 external monitor and virtually places it to the right of the laptop screen. Since my laptop is physically to the right of the external monitor, I use systemsettings5/display configuration to drag it to the left of the virtual monitor. If I do that in one single step, I find that it always crashes the session as the original reported.

As a workaround, I've found I get the desired positioning in two steps by moving the external monitor to a virtual position /above/ the laptop screen, applying that, then moving the laptop screen to the right of the external monitor.

HOWEVER, if I restart the system after using that workaround, KDE will fail to start every time I login, and throw me back to lightDM. The only fix for that is to go to a terminal and delete the screen configuration in ~/.local/share/kscreen/. I then have to move the monitors around again after logging in; I do this every reboot. :\

There's nothing obviously wrong with the "bad" kscreen configuration that prevents login. I've attached it anyway - in case a dev can see where loading it would break things.