Video tearing with modesetting driver and Intel Sandybridge graphics

[Floris]

> One idea that came into my mind is a multi-seat setup. I have a
> dedicated wireless keyboard with builtin trackpad that I use for the
> projector screen.  Can I run 2 X sessions where one session uses the DVI
> output, the keyboard and the mouse on the desk, and the other session
> uses the HDMI output and the wireless keyboard?
>
> Regards,
> Tino

I don't think that is possible, but you can try:
  loginctl seat-status seat0
If there are two drm and fb devices it is possible

Floris