HP INCFollow


Some pre-boot features only work with UMA graphics today on Windows based system. Displays on

docks may be driven by either the UMA or Discrete Graphics. In order to support pre-boot features

on displays attached through the dock, platforms with discrete GPU will need to switch to UMA

graphics during pre-boot. A possible mechanism for this switch is using display multiplexers. We

propose a method that reduces the number of required multiplexers, saving cost and board space.

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