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Apple Computing Products:
macOS - Desktop Hardware
Issues with Dual Monitors
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<blockquote data-quote="pigoo3" data-source="post: 1159945" data-attributes="member: 56379"><p>The fact that when you switched the "plugs" the monitor that wasn't working worked...and the opposite for the other monitor..99% means that the video card is at least partially not working. The good thing is one of the ports works...rather than the whole video card not working.</p><p></p><p>If you need two monitors...then you have to get another video card. The positive is...if the new card has two ports on it...you will be able to run three monitors!<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>- Nick</p><p></p><p>p.s. A second thing to try is...open up your Mac Pro...remove the video card...and then reinstall it. Maybe it just needs to be reseated to get it to work properly again. It's a long shot...but worth a try.</p></blockquote><p></p>
[QUOTE="pigoo3, post: 1159945, member: 56379"] The fact that when you switched the "plugs" the monitor that wasn't working worked...and the opposite for the other monitor..99% means that the video card is at least partially not working. The good thing is one of the ports works...rather than the whole video card not working. If you need two monitors...then you have to get another video card. The positive is...if the new card has two ports on it...you will be able to run three monitors!:) - Nick p.s. A second thing to try is...open up your Mac Pro...remove the video card...and then reinstall it. Maybe it just needs to be reseated to get it to work properly again. It's a long shot...but worth a try. [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
Issues with Dual Monitors
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