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Dell OptiPlex 3050: no graphics acceleration with HD 530


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Realtek ALC3234 is based on ALC255 codec (PCI id 10ec:0255). Look up the recommended layout ids listed in the AppleALC wiki. You may not obtain full running audio on this codec with AppleALC in which case fallback on VoodooHDA. But this is off-topic in this HD530 troubleshooting thread.

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