francis826

The issue is hardware polling. Displayport is hotswappable thus hardaware polling monitors the connected screens state, if you disconnect, windows simply removes that display, in single monitor mode, this equates to having no screen at all and windows defaults to the generic 800x600 for compatibility reasons. This happens for me whether I simply turn off my monitor, it goes into sleep mode, or screen saver comes on. Using DVI is not an option for me, as I need displayport 1.2 to get the 60Hz @ 4k resolution. I've struggled with this recently and have done extensive research on the subject, the issue was brought up as early as 2009 to Microsoft and there is still no solution. A google search will lead you to a few different software fixes, such as registry edits, nvidia control panel settings, the whole works, all of which did not work for me. Very unfortunate as my new 4k monitor will have to be returned because of this issue Monitor: ASUS PB287Q (4k @ 60Hz. DP 1.2 required to get full 60Hz) Graphics: NVIDIA GeForce GTX 750 Ti OS: Win 7 Ultimate