3 Monitors on Sapphire Radeon HD 6870 [duplicate]
I've got a decent machine, 8 GB RAM, good motherboard etc and an Radeon HD6870 GC. I'm desperately trying to run three monitors on the card. The card has 1 HDMI, 2 DVI and 2 Mini DisplayPorts. The set up is as follows:
- Monitor 1 is connected via the DVI cable.
- Monitor 2 is connected via a DVI to HDMI lead into the HDMI slot.
- Monitor 3 is connected via a DVI lead into a DVI to Mini DisplayPort adapter.
Now, in Ubuntu, I have no problems whatsoever, they all work completely fine as extended desktops. Windows is seeing none of this. I've got the Catalyst Control Centre, and I tried setting up an Eyefinity group, but I can only ever have 2 enabled at once.
Solution 1:
I set up an Eyefinity triple monitor setup just recently but with a 6950 card. The 6870 should also be capable of 3 displays
To get it to work I plugged in the monitors and had to hit the 'detect' button inside of the screen resolution settings to get them all recognised. Initially I just tried extending the desktop to all of them, but then I went into the Catalyst Control Center and made the EyeFinity group.
If you are having problems getting all 3 monitors working you could try these tests:
- Plug in each monitor one at a time, each using a different connector, verify that all screens, connectors work (Even if this worked in Ubuntu, it's nice to check on Windows)
- Start with one monitor connected, and while Windows is running, plug in each monitor. Detect the added monitor if necessary and continue until you have (hopefully) all 3 working.
- Double check that you have the latest version of the catalyst control center. The latest one (Assuming you have 64bit windows because you have 8GB of RAM) is 12.2
http://sites.amd.com/us/game/downloads/Pages/radeon_win7-64.aspx
Solution 2:
The hdmi is shared with one of the dvi ports. You must use all three inputs. The third being the DisplayPort or use a converter for MiniDisplayPort to DVI to get your other DVI into it.
E.g. (one of the 2 hdmi/dvi), one dvi, one display port)
I also believe you need to have eyefinity installed and the converter needs to be an active converter, not passive.
(Don't have the card, hope this helps)