Comment 73 for bug 419328

I can confirm this problem on my laptop with Intel GMA 945 on ubuntu 9.10. If I connect external monitor and set up both monitors on in side by side configuration X11 crashes. Mouse cursors are displayed on both monitors but system is not responsive, keyboard and mouse don't work so nothing can be done but switch off the laptop by pressing the power button, all other display combinations work. In prior versions of ubuntu I had no such problem.

It is very huge problem for me because the new version of gnome-settings-daemon 2.28.1-0ubuntu2 automatically switches external monitor on together with internal monitor in side by side configuration when display settings application is started or when "xrandr" command is run and this side by side configuration crashes the system.