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Quick Look/Preview problem with Radeon HD 5450


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10.9.5 Retail Install. Sabertooth P67, Core i7 2600k.

 

i have dual graphics cards. NVIDIA GeForce 8800 GTS running 2 - 22" monitors, ATI Radeon HD 5450 for my 42" tv. Both graphics cards work properly with qe/ci. First, watching videos work perfectly on both video cards. But when it come to viewing pictures is where the problem is. On the nvidia card everything works fine. However with the ATI card i get pixelated images (shown in the attachments). Here's the problem, PDF's show up fine. PNG's show up pixelated but if i hit the option key a few times or cycles through if their are multiple pictures it shows up normal. JPG's that trick doesn't work, some pictures show up normal and show show up pixelated no matter what. I've tried deleting com.apple.quicklook.ui.helper.plist, com.apple.quicklookconfig.plist, com.apple.QuickLookDaemon.plist. and using the terminal commands qlmanage -r qlmanage -r cache but it didn't work.

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