I have two monitors that I was attempting to set up with a dual-monitor display.
We'll call the problem monitor "Monitor A" and the working monitor "Monitor B".
Previously, my setup was simply Monitor A connected to my AMD HD 7800 via it's DVI port, and everything worked fine (so I know the monitor has been working, as well as the card).
I only had a DVI and a VGA cable on hand, so I connected Monitor B via VGA to my motherboard and Monitor A via DVI to my graphics card.
When I booted the computer, neither display showed anything. I pulled both cables from both monitors (removing the VGA cable from the equation completely) and plugged the DVI cable alone into Monitor A - nothing appeared, though it did recognize that I had plugged in a DVI cable. However, plugging the DVI cable into Monitor B caused a display to appear immediately.
I prefer to use Monitor A for single-monitor work, as it is larger, so I switched the DVI cable back and restarted. Still no display on A. I ended up pulling the DVI cable out of the graphics card, waiting, and plugging it back in - this finally caused the display to appear on monitor A.
However, today, after booting my computer, there was again no display on monitor A, and switching the cable to monitor B caused the display to appear immediately.
Why is this happening? Have I horrendously broken some configuration option in my graphics card setup? Any help would be appreciated.
EDIT: crap, I totally asked this in the wrong place. apologies.
We'll call the problem monitor "Monitor A" and the working monitor "Monitor B".
Previously, my setup was simply Monitor A connected to my AMD HD 7800 via it's DVI port, and everything worked fine (so I know the monitor has been working, as well as the card).
I only had a DVI and a VGA cable on hand, so I connected Monitor B via VGA to my motherboard and Monitor A via DVI to my graphics card.
When I booted the computer, neither display showed anything. I pulled both cables from both monitors (removing the VGA cable from the equation completely) and plugged the DVI cable alone into Monitor A - nothing appeared, though it did recognize that I had plugged in a DVI cable. However, plugging the DVI cable into Monitor B caused a display to appear immediately.
I prefer to use Monitor A for single-monitor work, as it is larger, so I switched the DVI cable back and restarted. Still no display on A. I ended up pulling the DVI cable out of the graphics card, waiting, and plugging it back in - this finally caused the display to appear on monitor A.
However, today, after booting my computer, there was again no display on monitor A, and switching the cable to monitor B caused the display to appear immediately.
Why is this happening? Have I horrendously broken some configuration option in my graphics card setup? Any help would be appreciated.
EDIT: crap, I totally asked this in the wrong place. apologies.
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