Hello,

John Baldwin <j...@freebsd.org> wrote:

> Almost all systems use one of the IDs we do support as a _CID if not a _HID.
> In fact, in this case it likely seems to be a BIOS bug as it used the same
> value for the _CID and _HID.  I suspect it is supposed to be using 0303 as its
> _CID.

  I don't think the BIOS should say PNP0303 as a keyboard _CID.
Using _CID may help some systems, but it may not be helpful
for many systems having keyboard probe problem.
I think it's a specification bug made by Microsoft, 
same devices connected different type devices should not have
different ID but same ID.

> > http://download.microsoft.com/download/5/7/7/577a5684-8a83-43ae-9272-ff260a9c20e2/pnp_legacy.doc
> 
> Note that 030B is listed as reserved in this table, and not a valid keyboard
> device.

  Yes, it's a invalid type, but reserved as a keyborad. 
I don't know why the BIOS builder puts PNP030B as a keyboard,
but it seems to be not a bug.

  People with this problem can override AML code,
but I don't think it is a bad idea adding other IDs to the list for probing.

-- 
k...@elam.kais.kyoto-u.ac.jp
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