Re: no keyboard after booting r235646 in laptop FS Amilo D 7830

From: John Baldwin <jhb_at_freebsd.org>
Date: Mon, 9 Jul 2012 11:53:25 -0400
On Friday, July 06, 2012 7:25:55 pm Kaho Toshikazu wrote:
>   Hello,
> 
> John Baldwin <jhb_at_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.

Well, my point is that having a _HID and _CID with the same ID is
pointless.  It really does look like a typo in the BIOS source.

>   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.

Adding IDs is cheap, so I'm fine with doing so.

-- 
John Baldwin
Received on Mon Jul 09 2012 - 14:05:19 UTC

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