separate display cards for HTPC and general use

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stvitus

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Jan 12, 2010
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Hi,

I'm currently running a radeon 4670 to an AV receiver/HDTV (for watching media and streams) with a 15ft HDMI cable. For awhile, I was able to share the card with another monitor (for browsing, business apps) by DVI fairly seamlessly. I would just have to duplicate them or say which display should run the card. I started getting problems when I got an xbox one and plugged it into the receiver via HDMI. Now, if the receiver is turned on to use the xbox, the card wont detect the DVI display anymore.

I was thinking a solution to this was getting a second 4670 or whatever its replacement is and deidcating each card to a display. Will this work, or does anyone know of a way to get the single card to play nice and detect the displays on the fly?

Thanks!
 
Solution
Wolfshadw
I'm just guessing here, but I think it's an issue with the receiver being set to the XBox One as the input. There is no handshake between the graphics card and the HDTV display. With the HDMI as the primary display (by default), without that handshake connection, it believes there is no display connected at all. Once you remove the HDMI connection from the graphics card, the DVI connection becomes the primary display and you get an image.

Try this:

With the XBox One turned off and the AV Receiver set to the PC HDMI input, go into Catalyst Control Center (CCC). Under Desktop Management --> Creating and Arranging Desktops, Right-Click on the DVI connected display and select, "Make Primary". Click Apply to save the settings and exit CCC...
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stvitus

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Correct. If the PC is off and the receiver input is switched to the xbox which is on. If I turn the PC on, it wont detect the DVI.

The second I unplug the HDMI from the card, it picks up the DVI monitor.
 
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Wolfshadw

Wolfshadw

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I'm just guessing here, but I think it's an issue with the receiver being set to the XBox One as the input. There is no handshake between the graphics card and the HDTV display. With the HDMI as the primary display (by default), without that handshake connection, it believes there is no display connected at all. Once you remove the HDMI connection from the graphics card, the DVI connection becomes the primary display and you get an image.

Try this:

With the XBox One turned off and the AV Receiver set to the PC HDMI input, go into Catalyst Control Center (CCC). Under Desktop Management --> Creating and Arranging Desktops, Right-Click on the DVI connected display and select, "Make Primary". Click Apply to save the settings and exit CCC. Now shut down your system, turn on the XBox One, switch the AV Receiver to the XBox One HDMI input and then, power up the PC again. See if you now have a display on your DVI connected monitor.

-Wolf sends
 
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Solution
S

stvitus

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Jan 12, 2010
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Thanks Wolf!

It must've been that the HDTV was set primary. Catalyst let me set them to duplicate and everything seems to be fine now. I think i probably went wrong using win7 control panel to manage it instead of the ATI software.

Thanks again.

Edit: duplication sort of solves the problem, but the DVI wants to show 1440x900 and the HDTV 1280x720. Is there a way they can both display at their recommended resolutions?
 
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