Alright, I thought I would have my problem fixed now, putting xrandr --output HDMI-0 --mode 1920x1200 --rotate left --pos 5120x0 --output DP-0 --mode 2560x1440 --pos 2560x0 --output DP-2 --mode 2560x1440 --pos 0x0
into /usr/local/bin/setup_lightdm_xrandr.sh, (with a proper shebang) and adding it to /etc/lightdm/lightdm.conf under [Seat:*] display_setup_script=/usr/local/bin/setup_lightdm_xrandr.sh session_setup_script=/usr/local/bin/setup_lightdm_xrandr.sh makes lightdm work correctly again, but then I run into the original problem when logging into Xfce. Mouse shows correctly on my pivot screen, but dragging any window there shows only the mouse cursor, and no window. (I can see that the screen is like I want it regarding to position and pivot rotation though). Question is if it is a lighdm, Xfce or Nvidia problem though... -- Andreas Rönnquist gus...@debian.org