Use HDMI or DVI to connect monitor to computer.

Zepher said:

I've got a pair of Westinghouse 24" monitors hooked up with HDMI at 1920x1200 just fine.

I didn't know that was possible. Very interesting.

A "full" HD spec source will output at 1920x1080 since that is the current max resolution of those devices, so of course the monitor is going to try and sync to 1080p.

But in this case the "source device" is the HD5770 video card. If the hardware and ATI drivers could support HDMI at 1900x1200p you'd think that's what would kick in. But it's not.

You just plug in the HDMI cable and the rest is automatic including, I might add, the instant disabling of the DVI connection which is the other side of the HDMI connection for that monitor. Windows/driver swiftly changes that monitor to be HDMI, not DVI. If you look in CCC you'll now see THREE monitors, with your "previous DVI version" now #3 and disabled. The HDMI version of that monitor has taken over.

Also, there is no resolution higher than 1920x1080 that can be selected. So that must be what the Eizo is reporting to the HD5770 is all it can accept via HDMI.

If you have your video card connected to the Eizo with HDMI and the monitor tells the card it is an HDTV, then it will max out at 1080P since that is the max for a current HDTV.

What is your video card(s) being used with the Westinghouse monitors? How can they both be HDMI? Two video cards??

If you're using an ATI video card with CCC, can you provide what is shown as the resolution and refresh rate for the monitors?

And, do the Westinghouse monitors not have DVI capability? I guess I wonder why one would choose HDMI over DVI if given an option?

Zepher said:

card is a 3870 using a pair of DVI to HDMI cables.

I rest my case.

You aren't running these as HDMI monitors. That is being hidden from the HD3870 (which has dual DVI outputs, not HDMI outputs) by the adapter cable. From Windows' perspective (and the HD3870 and drivers/CCC) you are running these two monitors as DVI.

Please look in CCC and confirm that they almost certainly show "DVI" in their connection. Both the hardware (HD3870) and software (Catalyst drivers and CCC) think you've got a DVI connection going.

It probably looks like this, which is what my Eizo looks like when it is connected in DVI mode:



You're thus not experiencing HDMI limitations as I am when using the true HDMI connector on my HD5770.


When my Eizo is connected in "true, genuine, HDMI mode" so that Windows and the HD5770 and drivers/CCC know it's connected through an HDMI cable, it is limited to 1920x1020 and shows in CCC as "HDMI connected" (as shown below), not "DVI connected" (as shown above):




Note that the Eizo in its original DVI-connection mode has been displayed as a 3rd monitor, but disabled:

there are no DVI ports on the Westinghouse monitors either. I would prefer DVI since they are locking connectors.

Well then they're really HDTV's I'd have to say, which you're using as Windows desktop monitors.

But from your 3870's perspective they ARE actually DVI connections, not HDMI connections. You're using a video card's DVI connectors, "magically" supporting an HDMI-only display device through an adapter cable. But for all intents and purposes, Windows believes they are DVI connections.

I'm sure you could not get HDMI connections higher than 1920x1080 today (before 2K/4K becomes commonly available).

Zepher said:

this is the specs from your card,
HDMI® (With 3D, Deep Color and x.v.Color™)

• Max resolution: 1920x1200

ATI Radeon

I know that. But it only applies to DVI connections.

You haven't posted the screenshots from CCC on your machine that I requested, confirming or denying that your two Westinghouse monitors are actually being treated as if they were on a DVI connection, with the fact that they're HDMI being masked from your video card and Windows by the DVI-to-HDMI adapter cable.

I really do want to see what CCC says your monitors are connected as, just like my screenshots reveal.

You have to set it to 1920x1200 since your monitor is not reporting itself properly.

If you would like to tell me where I'm supposed to do this, I will be glad to try. You need to post a screenshot if you're providing instructions to do something, as a picture is worth 1000 words and the words you're using don't seem consistent with what I know to be true on my own machine. You need to make your case and convince me with pictures, so that I see what you're talking about on your machine and can investigate on my machine.


In particular, when changing the resolution on the Eizo when it is in DVI mode, the available choices go all the way up to 1920x1200 as you'd expect:



But when trying to change the resolution on the Eizo when it is in HDMI mode, the available choices only go up to 1920x1080 as I have said:



So there is no way for me to manually specify any resolution higher than what is presented to me in that slider. And since the Eizo in HDMI mode says "1920x1080" is the maximum resolution I can support, that's what's shown in the slider.

If there is some other place I should be going to change resolution beyond that, please tell me what it is (and/or post a screenshot). But if the monitor can only accept up to 1920x1080 while in HDMI mode (just as it has already announced), what good could possibly come from trying to feed it 1920x1200???

SHOW ME IN PICTURES WHAT YOU WANT ME TO DO.