External display not detected by mobility center
I have a Dell XPS M1330 and I always connected external displays using
"connect monitor" in Mobilit Center. This function is not working anymore. If
I use Fn + F8 the external display can be used, but mobility center itself
does not recognize the display....
There is a HDMI and VGA output, so I suppose, Vista Mobility Center is
searching for an external display at the HDMI connection, but the monitor is
connected through VGA. Using the display applet in the control panel, I can
extend the desktop to the second monitor, but Mobility Center does not
work.... but it did days ago. Maybe it has something to do with the HDMI TV I
plugged in days before...
Graphics card: NVIDIA GeForce 8400M GS
Are there any suggestions?