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bNumConfigurations can now be set to 1 (from 2) #258

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xross opened this issue Apr 26, 2022 · 0 comments
Open

bNumConfigurations can now be set to 1 (from 2) #258

xross opened this issue Apr 26, 2022 · 0 comments

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@xross
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xross commented Apr 26, 2022

Bug 17605 - bNumConfigurations can now be set to 1 (from 2)

  1. A couple of years ago we recommended to use bNumConfigurations=2 in the device desc to workaround an issue with the UAC1 class driver in Win XP. XP is dead now and we need to remove this workaround to make the devices work correctly with the (future) UAC2 class driver. Background is: bNumConfigurations=2 prevents the MS composite driver from loading. But now we need the composite driver. It splits up the device into its logical functions: Audio2, MIDI, DFU. The new class driver loads on the Audio2 function only.
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@xross