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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: 1160270" data-attributes="member: 56379"><p>Thanks for the info. Yeah...that does seem sort of strange that each port works individually...but if both ports are occupied...only one works. Any chance the "reseating" the video card idea I mentioned to the OP might work for you?</p><p></p><p>If this were the "old days"...I might suggest that if two big monitors were plugged in, that you were running out of video ram. But most video cards these days (certainly a Mac Pro) would have more than enough vram to drive two monitors simultaneously.</p><p></p><p>Is this an older Mac Pro?...if so would you happen to have an X1900 video card. I remember there being a special replacement program involving the X1900 card. Here's an article on it:</p><p></p><p><a href="http://news.softpedia.com/news/Apple-Admits-to-Problems-with-Mac-Pro-ATI-X1900-XT-Video-Cards-158321.shtml" target="_blank">Apple Admits to Problems with Mac Pro ATI X1900 XT Video Cards - Softpedia</a></p><p></p><p>HTH,</p><p></p><p>- Nick</p></blockquote><p></p>
[QUOTE="pigoo3, post: 1160270, member: 56379"] Thanks for the info. Yeah...that does seem sort of strange that each port works individually...but if both ports are occupied...only one works. Any chance the "reseating" the video card idea I mentioned to the OP might work for you? If this were the "old days"...I might suggest that if two big monitors were plugged in, that you were running out of video ram. But most video cards these days (certainly a Mac Pro) would have more than enough vram to drive two monitors simultaneously. Is this an older Mac Pro?...if so would you happen to have an X1900 video card. I remember there being a special replacement program involving the X1900 card. Here's an article on it: [url=http://news.softpedia.com/news/Apple-Admits-to-Problems-with-Mac-Pro-ATI-X1900-XT-Video-Cards-158321.shtml]Apple Admits to Problems with Mac Pro ATI X1900 XT Video Cards - Softpedia[/url] HTH, - Nick [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
Issues with Dual Monitors
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