Windows 7 – Multiple Displays

I have multiple displays on both my “high end” workstations.  The one I’ve been testing Windows 7 Ultimate x64 on happens to have two nVidia 9800 PCIe display adapters and three 22″ LCD display panels (I plan on hooking up a 37″ LCD TV to the forth output when I upgrade my 42″ Plasma TV).

The three panels worked great with Vista Ultimate x64, and I didn’t have any problem doing a fresh install of Windows 7 Ultimate x64 on the machine.  The monitors didn’t default to the same arrangement they did on Vista — but it was easy to reorder them.

One problem I’ve noted (and yes we can partially blame this on the PC BIOS) is that if I boot the machine without any of the monitors powered up, I get a different primary monitor and non of the other monitors are active (I can force them active).

This problem is all to reminiscent of the SATA drive problem I found installing on multiple drives — but there’s really no apparent way to force Windows 7 to always pick the same default monitor (whether they are on or off).

So yet another feature that worked fine in Vista that’s broken (or at least changed) in Windows 7.

Make sure you have all your monitors on; or at least your primary monitor; when you boot up Windows 7!!!

 

NOTE:  This problem appears to be related to multiple identical display adapters, and appears to not be an issue if you just have two displays on a single card.

Originally posted 2009-11-19 01:00:03.