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December 8th, 2011 19:00
OptiPlex 990 BIOS DSDT table has wrong info for TPM device
Both the _HID and _CID values are a duplicate value of PNP0C31 (the generic TPM PNP ID). _CID should be PNP0C31 and _HID should be SMO1200 since it is a STMicro TPM. The TPM PC client spec says _HID should map to the vendor specific ID. These values are correct in other OptiPlex systems I've looked at so I'm guess this could a BIOS bug.
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DELL-Warren B
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December 9th, 2011 15:00
I've sent this to our product support team which is looking into it.
Thanks,
Warren
Clint11
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December 9th, 2011 20:00
Thanks Warren. Let me know if you need more information.