help with card output

C

chefstuarto


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I have a mac pro using a ATI Radeon HD 3870.
Worked grat for 2 years.
Computer went to sleep.
I started to work an hour later and my second display is gone.
Switched monitors to the working output of the card.
Seems like one output is not working.
Both monitors worked when I switched ports but one side is not working.
Any ideas.?
I reset pram and started in safe mode to troubleshoot.
I'm lost.
 
chscag

chscag

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Your Mac's Specs
2017 27" iMac, 10.5" iPad Pro, iPhone 8, iPhone 11, iPhone 12 Mini, Numerous iPods, Monterey
Seems like one output is not working.
Click to expand...

The obvious solution is to replace the card. ;)
 

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