Bug#922615: nvidia-driver: Windows not visible on third screen after stable upgrade

[Andreas Ronnquist]

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
gusnan at debian.org