When I come back to my computer, after leaving it on overnight, the display gives me a no signal message. I cannot get the Windows login screen up on the display, via the DVI cable alone, no matter what I try.
So I connect the computer to the display using a VGA cable (beside the DVI cable) and that gets me the Windows login screen. Then I unplug the VGA cable and I still have the Windows login screen (!?) but now it's obviously coming through the DVI cable.
Does anyone know why this might be? I'm running Windows XP SP3, the desktop is an Acer S680G and the display is an Acer B223 WL. I'm using power scheme 'Always On' as this box has to run processes around the clock.
Any help to avoid this dance of plugging and unplugging would be appreciated.