Dear Maintainer,

My system has 2 screens - a primary display connected to HDMI-0 and a
smaller secondary display to
the right, on DVI-D-1. On boot, the displays are swapped so that the
smaller display is configured
on the left. In the Displays section of KDE system settings, I switch
them around to match their
real-world orientation, but if I reboot, they are swapped again, with
the mouse leaving the right side of
the right-hand screen and appearing on the left side of the left-hand
screen at the sddm login interface,
before logging into the kde session.

It is the same as this thread I found on the KDE forum:
https://forum.kde.org/viewtopic.php?f=309&t=153057
Workarounds specified seem to be targeting sddm, and read as
countering a race condition with xrandr, maybe?
But there's really no reason the settings shouldn't stay the same
across reboots.

sney