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Message-ID: <alpine.DEB.2.01.1005141156310.8603@asgard.lang.hm>
Date: Fri, 14 May 2010 12:05:26 -0700 (PDT)
From: david@...g.hm
To: Matthew Garrett <mjg59@...f.ucam.org>
cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Dmitry Torokhov <dmitry.torokhov@...il.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
linux-input@...r.kernel.org, Bastien Nocera <hadess@...ess.net>
Subject: Re: [git pull] Input updates for 2.6.34-rc6
On Fri, 14 May 2010, david@...g.hm wrote:
> On Fri, 14 May 2010, Matthew Garrett wrote:
>
>> On Fri, May 14, 2010 at 11:47:43AM -0700, david@...g.hm wrote:
>>
>>> yes, everything has USB ports, so they could use USB keyboards, but it's
>>> actually pretty common to still use PS/2 keyboards (and while the systems
>>> all support USB, it's not uncommon to have KVM systems, including pretty
>>> expensive 'enterprise' KVM systems that still require PS/2 keyboards be
>>> used to plug into the KVM, so those are the keyboards that are in the
>>> datacenter that someone will grab to plug into a problem machine)
>>
>> The server hardware I've looked at will all declare the ports regardless
>> of whether or not there's something plugged in.
>
> remember that many people use systems in datacenters that are not 'server
> hardware'.
>
> when a desktop PC can have 4-6 cores with 8G+ of ram and a couple TB of
> storage, a lot of people will end up using those systems for production.
>
> As they grow into bigger companies they will shift to 'server class'
> hardware, but startups tend to use whatever they can scrounge (or buy
> _really_ cheap)
By the way, for what it's worth I think it's a very bad idea to hot-plug
PS/2 keyboards. The hardware may be better nowadays, but back when I was a
PC repair tech I made very good money replacing the fuses on motherboards
that would blow because someone hot-plugged the keyboard.
That said, there are times when it happens, and many people don't see any
problem with it.
David Lang
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