4870x2 - DVI out 1 no longer working/responding?

Hello -
I have a sapphire 4870x2, and I recently got a DVI-> HDMI cable so I could have my computer hooked up to my TV via HDMI and my monitor at the same time (the are in close rooms so I just needed a long cable).

Once I plugged in the DVI->HDMI cable into DVI out 2 on my card - everything was perfect, I could see the display on my monitor and it was being cloned to my TV via the ATI control panel, and it all worked as expected.

I ended up moving my computer around and then re-plugged in my TV into DVI out 2 (the one on the right), and forgot to plug in my monitor to DVi out 1, but it all booted up fine, and I could see everything on the TV.

Once I plugged my monitor back into the card into DVI out 1 (on the left), my monitor wouldn't come on. And now, even after the computer has started, only the DVI output 2 sends a signal, so I have to only have 1 thing connected at a time.

Can anyone help me figure out what I did to disable the dvi out 1? Thanks for any help!

cats/display manager/display properties is display 2 enabled (right click on it)? try force detecting displays?

vanilla - thanks for the info and yep I've tried that - when I right click it says that there is no display connected, I click "force detect" and nothing happens....Its like its not even registering that I have something plugged in. I wonder if something got changed in the bios when I booted up with only a plug into the second dvi out?

go into bios and disable plug and play.


basic stuff - cables cocked?
tv switched to correct input?


edit which drivers are you using? can you check to see if both outputs work in safe mode?

Disabled plug-n-play, no luck. re-enabled, still no luck.

I'm starting to wonder if I 'fried' the DVI output 1 on the card, because I can hook my TV to output 2 and it comes on fine, I can hook my monitor to output 2 and it comes on fine. I reinstalled the 9.2 driver, but still nothing if I plug into dvi output 1. When I plug either into output 1 (with the other screen plugged into output 2), still nothing won't even detect it.

Might have to use that 2 year warranty to exchange for a new card.

About to see if both outputs work in safe mode, but I don't think so. Last time I was messing with it, anything plugged into DVI output 1 just wouldn't even come up - not even show the boot up/post screen

Leave both displays on after a reboot, you SHOULD get the POST on both screens. If not you very well could have damaged a DVI port.

Leaving both plugged in, I do NOT see a post on both screens, only the one that is attached to DVI output 2 (I have swtiched and tried a few times).

Looking like I may have a damaged DVI output 1....not sure how the heck that would have happened, but its all I can think of. Hopefully, this is covered under warranty or can be fixed.

I know when I post with my Visiontek X2, it shows on both screens, I doubt anything would be a little different. I'm assuming you hooked something up to just output 1 prior to a POST?

Yep I attempted to hook up just 1 thing (both the TV and monitor) prior to POST - it must be a broken DVI output, somehow when I disconnected everything to move my computer, either I broke it or shocked it or something (I'm generally very careful with my components/plugging in cords/etc so this is a bit of a surprise).

But nothing, not even POST will display on any monitor/tv/etc from that DVI output #1, so I have to assume the port is broken.

Thanks so much for all the help, and tomorrow during normal business hours I'll contact their support and see what the options are.

if the same thing happened in safe mode, it is definitely your vid card.