Mac Pro Intel display woes....


macrumors newbie
Original poster
May 24, 2012
hi folks, im hoping you may be able to help me.

i recently upgraded my desktop to a mac pro 8-core with one video card-two DVI outputs. i have 3 monitors i need to send the same signal to; one nice 24" LED being the MAIN monitor(a good monitor that i want a good signal on) and the other two being peripherals(dont need signal to look good).

if i connect JUST the main monitor via DVI, the signal looks great. if i connect the other two as well(they go into and out of a hub), all 3 look like crap, regardless of display setting. the only way i can get the main monitor to look hi-res is by unplugging the peripherals.

is there ANY way i can plug all the monitors in, and have the main one look "hi-res" or good? if i bought a second video card, would the computer let me have two recognized display settings simultaneously? thanks, rj


macrumors 601
Jul 17, 2010
You need to post what "hub", what graphics card, and any cabling you are doing? Most likely your GPU can't use 3 screens. How do 2 look with no "hub"?


macrumors 6502
Sep 11, 2009
Cardiff, Wales, UK
could this have somthing to do with using 'active' mini display port adaptors ect? What graphics card do you have in your pro and what is the connector on the second and third monitors?
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