I already asked this questions over at Ask Ubunutu. Unfortunately I have not received an answer. As this question is not Ubunutu specific, I am trying it here.
I am using xrandr via console to enable/disable secondary monitors. This work fine so far. Unfortuantely if I move my mouse beyond one screen, it appears on the other one. How can I disable this feature - and lock the mouse to one screen?
I use Ubunutu 10.10 and awesome - no gnome/kde.
I've never seen anything in the Xrandr or Xinerama docs about restricting mouse movement to a single monitor.
And, before Xinerama, I used to run multiple X screens on multiple monitors, but the mouse moved freely between the monitors without trouble. (Windows were stuck on the monitor they started on; it worked much better than it sounds. :) So that's probably out.
You may be able to solve this starting another X server. Configure the second X11 for the correct screen, no mouse (keyboard too?) input device, and start clients on that second X server using
DISPLAY=:1 xterm &and so forth.