Windows keep resizing for no apparent reason

Hardware Other Hardware
1

I have a Windows 8.1 Pro machine connected via displayport to a Dell U2711 monitor.

When this was connected with DVI cable everything worked fine. But moving to displayport has had a very strange impact. Whenever the system wakes from sleep all of the windows occupy just the top left corner of the screen.

I can’t work out what is doing this, Is it a fault in the cable, the displayport technology or the Dell monitor.

This is driving me nuts. I know if will work if I go back to DVI but I’d rather not do that as I’d like to buy a KVM for 4 computers and the others don’t have DVI that can output at the 2560 x 1440 of the Dell.

Any advice much appreciated. Is this a known problem?

I’m in the process of building a new PC but I don’t know what I need to do to fix this.

2

The monitor boots in low resolution mode (1280x720) before the display driver gets the proper EDID for 2560 x 1440 display mode. You could try forcing 2560 x 1440 in your driver. I have the same problem when using an HDMI AV Receiver.

3

Thanks for the reply. My driver says it is set to 2560 x 1440. Is there another setting? I’m using an Nvidia card.

4

under performance use custom setting for graphics,
most people usually have it set for best speed performance or automatic

5

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