When igfxpers.exe was running on Vista, I could disconnect a monitor and then reconnect it and it did not find the signal. But if igfxpers.exe was not running, I could remove a monitor and then reconnect it and it worked fine.
However, in Windows 7, this behavior is not the same. Whatever I do, I cannot reconnect a monitor. I always have to reboot the computer to make it detect the signal.
Do anybody have any clue for fixing this? Or do I have to reinstall Vista?