I have done some correspondence with Intel and it seems that the
official response is that DG45ID is not (at least currently) supported
on Linux and Intel is not going to fix this issue. The fact that this
board works against the EHCI specification published by Intel
(http://www.intel.com/technology/usb/ehcispec.htm page 121 and page 122)
does not matter and all I was able to extract from Intel about this
issue was "The link you provided does not relate specifically to this
board and it is just general information for EHCI Controller." The fact
that linux kernel tries very hard to follow that specification did not
matter.

So the end result is that either you compile your own kernel with
smaller timeout or try to get workaround for this issue in linux kernel
some other way. Do not expect Intel to help in any way. The other
response I got was "We cannot provide further information on the BIOS
other than the information that is publicly available." I think this
means that Intel is not going to say how the EHCI hand-off is even
supposed to work!

-- 
slow boot on intel DG45ID 
https://bugs.launchpad.net/bugs/275351
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