Sign in with
Sign up | Sign in
Your question
Solved

ATI 5770 3 Monitor Problem

Last response: in Graphics & Displays
Share
October 10, 2012 7:47:04 PM

I am using a MSI R5770 Hawk Radeon HD 5770 (http://www.newegg.com/Product/Product.aspx?Item=N82E168...) which has 1 DVI, 1 HDMI, and 1 Displayport. I'm attempting to connect a VGA monitor with a DVI to VGA adapter, another LCD using a Displayport to DVI adapter connected to a DVI to HDMI cable, and finally a HDTV with an HDMI cable. Phew, okay.

The problem I'm having is CCC as well as the Windows display settings will not let me extend across all 3 monitors simultaneously. I'm not using Eyefinity, I simply want to be able to extend the desktop. I'm able to use 2 monitors at one time in any combination but upon attempting to enable the third CCC spits out the error: "To extend the desktop, a desktop or display must be disabled.". In the case of standard windows options I get the error: "Cannot save display settings".

I've searched for an answer but the circumstances for other people getting this error do seem slightly different and no real solutions have been provided. What do?

Edit: My primary monitor is the LCD connected using the displayport nonsense.
October 10, 2012 7:50:53 PM

IDK for sure, but your adapters might be causing trouble.

Are all of your displays the same resolution and refresh rate?
m
0
l
October 10, 2012 7:53:03 PM

Refresh rate yes, resolution no. My primary is 1080p, the second LCD is 1024x768, my TV is 720p.
m
0
l
Related resources
October 10, 2012 7:54:29 PM

Predilect said:
Refresh rate yes, resolution no. My primary is 1080p, the second LCD is 1024x768, my TV is 720p.


You could try setting them all to 720p just to see if it works. It might at least tell us a possible cause of your problem.
m
0
l
a b C Monitor
October 10, 2012 7:55:54 PM

You must use 3 digital connections to do this. Using the VGA adapter has one connection using an analog interface. Try to use a DVI to DVI if possible.

Also, are they all running the same resolution?
m
0
l
October 10, 2012 7:59:15 PM

Same error :/  Also, in order for me to check that all 3 were at the same resolution I have to disable one and enable the other. At all times there is 1 monitor disabled. Just some food for thought.
m
0
l
October 10, 2012 8:01:19 PM

The second LCD has only 1 VGA port, nothing else. Is this the problem? If so, what's the reason? Thanks for the quick responses.
m
0
l
October 10, 2012 8:04:02 PM

Seeing as the adapter is changing the format from digital to analog after the fact, why/how would the software intervene?
m
0
l

Best solution

a b C Monitor
October 10, 2012 8:08:28 PM

Predilect said:
Seeing as the adapter is changing the format from digital to analog after the fact, why/how would the software intervene?

It is a timing issue and you must use 3 digital connections to use 3 displays. Just the way it was designed. Sorry.

Using the DVI to VGA adapter with the DVI-I port makes it an analog connection. DVI-I supports both DVI (digital) and VGA (analog) devices.
Share
October 10, 2012 8:12:45 PM

Best answer selected by Predilect.
m
0
l
October 10, 2012 8:12:46 PM

Ahh, well that answers my question I suppose. Thank you very much. :) 
m
0
l
!