Comment 67 for bug 813343

I use a Dell Vostro 1500 with a GeForce 8600M GT.
I used to have lucid with gnome2 (of course) with a seperate x-server setting for my external tft. everything worked like a charme.

Then i switched to an SSD and did a oneiric reinstall.
When installing any oneiric nvidiadriver and setting up the seperate xserver setting i get the same issue with black (or white when i click around) screen on the external tft. Mouse apears as the low-graphic X, nothing of unity is shown, nothing is clickable.

Twinview works, BUT like #66 its ugly slow. compiz and Xorg are using >10%cpu each, scrolling in chromium gets laggy, shoving programs between ext. and laptop screen laggs and switching to fullscreen takes several seconds.
It is like using an old pentium 2 :/

this is the bug with the seperate xscreen. its unity related like this one.
https://bugs.launchpad.net/ubuntu/+source/nvidia-settings/+bug/882143