linux-kernel - Re: [git pull] Input updates for 2.6.34-rc6

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Message-ID: <alpine.LFD.2.00.1005131410090.3711@i5.linux-foundation.org>
Date:	Thu, 13 May 2010 14:21:52 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
cc:	lenb@...nel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [git pull] Input updates for 2.6.34-rc6

On Thu, 13 May 2010, Dmitry Torokhov wrote:
> 
> But I guess because there are no devices plugged in ACPI they are "inactive" 
> and thus ACPI drop them. I was always wondered by ACPI did that. Len?

Btw, even without actual physically plugging in the device, at least the 
really early KVM boxes used to basically just _physically_ switch between 
keyboard ports, and so using such a KVM switch is essentially also going 
to plug it in after boot time.

Some slightly more fancier KVM devices (probably most of them by now - if 
you want auto-switching etc) have real electronics and actually emulate a 
keyboard, needed for computers that require a keyboard to even boot up 
("Keyboard not detected. Press F1 to continue").

But the hard-switching ones were at least at some point way more reliable: 
the "smart" ones would have trouble with any "fancy" features like 
scroll-wheels etc. Probably not an issue any more.

Of course, these days few people use PS/2 keyboards any more, but it would 
still be a shame to break a perfectly reasonable setup.

			Linus
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