I've just now plugged my new ASUS H87-PRO machine into three monitors, through DIsplayPort, HDMI and DVI.
During POST, BIOS and boot, the DisplayPort and HDMI monitors mirror one another, and the DVI monitor sleeps.
After booting into Windows 8.1 x64, the HDMI monitor sleeps, and a get a proper two-monitor spanning desktop on the DVI and DisplayPort screens.
My reading of the board specs is that I can use three of the four ports at once (there's also a VGA port I'm not using, and nothing is plugged into it). This is making me crazy!
In UEFI BIOS, I've set Primary Display to iGPU (an abundance of caution, since the on-board is the only graphics in the box), iGPU memory to the maximum of 1,024KB, Render Standby is at the default of Auto, and iGPU Multi-Monitor is disable (I know that setting sounds applicable, but apparently it is for people using both on-board integrated and an additional graphics board together).
For the record, I did try turning iGPU Multi-Monitor on, and saw no change at all.
I can't find any other knobs to twiddle...any thoughts?
Thanks!
During POST, BIOS and boot, the DisplayPort and HDMI monitors mirror one another, and the DVI monitor sleeps.
After booting into Windows 8.1 x64, the HDMI monitor sleeps, and a get a proper two-monitor spanning desktop on the DVI and DisplayPort screens.
My reading of the board specs is that I can use three of the four ports at once (there's also a VGA port I'm not using, and nothing is plugged into it). This is making me crazy!
In UEFI BIOS, I've set Primary Display to iGPU (an abundance of caution, since the on-board is the only graphics in the box), iGPU memory to the maximum of 1,024KB, Render Standby is at the default of Auto, and iGPU Multi-Monitor is disable (I know that setting sounds applicable, but apparently it is for people using both on-board integrated and an additional graphics board together).
For the record, I did try turning iGPU Multi-Monitor on, and saw no change at all.
I can't find any other knobs to twiddle...any thoughts?
Thanks!
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