Unable to run 2nd external display on M!7x R3

Hi,

I have an R3 with the ATi 6970m. I have an external display hooked up via hdmi, and this works fine.

I'm trying to connect another display via the vga port which doesn't seem to work as a third display. When I disconnect the hdmi, it works fine, but with the hdmi connected, I'm not able to use the vga monitor - it says 'unable to save display settings' when i try to extend it.

Theres a method where you delete the TMM folder in the registry on google but thats not helping either. So I was wondering if you guys had any idea? I'm thinking maybe this has something to do with switchable graphics or something. Is there anyway I can have 3 displays (including built-in)?

Thanks for your time!
Carthik

 

I tried using HDMI and mini-DP connected displays and it recognizes all three displays, however, it will only allow the use of one at a time. Every attempt to extend to the 2nd display pops up a request to disable the other one.

I see AMD's eyefinity is supposed to support this but cannot find it on my R3. I'm not sure if it's something that needs to be downloaded from AMD or if our hardware supports it.

Update: Upon further review, I updated the AMD Catalyst Control Center software to 11.6 and got the eyefinity menu item now, however, any attempt to connect a third (2nd external) display crashes the control center. Rebooting restores control center as long as there is only one external display but it will not even start if the 3rd display is connected at boot or subsequently. I think our hardware does not support this.

Cheers,

 

If it works the same as my m11x did, you can have two displays at a time on dedicated graphics. I had two displays running on HDMI and DisplayPort, as long as I turned off the internal (laptop) display.

 

I'm trying to find a way to run 3 displays - including the laptop one. So 2 externals via hdmi and vga.

There has to be a way to be able to do this - some registry tweak or something. Its really stupid to limit a card like the 6970 to power only 2 displays at once!

Anyone else have any other ideas?

 

We understand what you're trying to do. We just have not been able to get it to work and based on the behavior it seems like it might be a hardware limitation. AMD's website shows a list of approved dongles that support eyefinity. It appears you need monitors that natively support mini-displayport or std displayport for this to work.

AMD Eyefinity Validated Dongles

It does not appear a software fix will resolve this issue.

Cheers,

 

Hey thanks a lot for this panzer... this really sucks though! haha... really cheap on their part to disallow the ability to use multiple monitors!