GIGABYTE ATI Radeon HD6850 & HD6870 - Dual Monitor Issues

[kmhacker]

I have three CustoMacs set up behind a IOGEAR 4-Port Dual View KVM. All three are fully up-to-date (10.7.4) and work fine except for the fact that none recognize the second monitor.

I am about to pull each one off the KVM and see if it works off of the direct connection, but I see a lot of posts about Dual Monitors not working out of the box. I've tried the various fixes found on the forum to no avail.

My question is this, there seem to be lots of possible fixes. Is there a definitive guide to test and rule out the fixes?

Details on my gear below.

Thanks,

Doug


http://www.amazon.com/gp/product/B004IF6I1S/ref=oh_details_o00_s00_i02
http://www.amazon.com/gp/product/B004F6GJAU/ref=oh_details_o00_s00_i03
http://www.amazon.com/gp/product/B0029U15GC/ref=wms_ohs_product

 

[kmhacker]

A little more research indicates that the dual monitor issue might be native to 10.7.4. Anyone else find that?

 

[randallphoto]

Not sure about the Gigabyte version, but I have the Diamond HD6870 and I have 3 monitors attached to it and it works perfect. I didn't have to touch any kexts to make it work properly either and I'm on 10.7.4