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Message-ID: <20110427172718.GA16118@gallifrey>
Date: Wed, 27 Apr 2011 18:27:18 +0100
From: "Dr. David Alan Gilbert" <linux@...blig.org>
To: Valdis.Kletnieks@...edu
Cc: Jiri Kosina <jkosina@...e.cz>, Greg Kroah-Hartman <gregkh@...e.de>,
Dmitry Torokhov <dmitry.torokhov@...il.com>,
linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
linux-input@...r.kernel.org
Subject: Re: Wonkiness with keyboard adapter - not sure if it's in USB or
input systems
* Valdis.Kletnieks@...edu (Valdis.Kletnieks@...edu) wrote:
> Running 2.6.39-rc1-mmotm at the moment on a Dell Latitude E6500, that wants an
> external USB keyboard/mouse and monitor when it's in its docking station in the
> office. I have an old Microsoft Natural keyboard that has a PS/2 connector, but
> I like the tactile feel so I didn't want to get rid of it. So we recently got
> some PS2->USB adapters, which appear in lsusb as follows:
>
> Bus 001 Device 006: ID 0e8f:0020 GreenAsia Inc. USB to PS/2 Adapter
>
> Now, when I first power up the laptop in the docking station, it *does* see the
> keyboard just fine, and Grub is able to talk to it, and everything works (this
> particular boot, I was able to hit the space bar to get to the Grub menu, use
> arrow up/down to move between entries, all looked good). So it isn't like the
> device needs any initialization above and beyond what the BIOS is doing at
> initial power-on.
>
> However, when the Linux kernel starts up, it sees the adapter, but doesn't
> recognize key presses until I disconnect and then reconnect the keyboard:
I've experienced the same behaviour on at least two very different machines
(one a Tosh laptop, the other a Dell desktop), in both cases using a Model M
PS/2 keyboard connected to two different USB<->PS/2 converters (one a
really ancient Belkin one and the other a recent no-name soap-on-a-rope type
thing).
Dave
--
-----Open up your eyes, open up your mind, open up your code -------
/ Dr. David Alan Gilbert | Running GNU/Linux | Happy \
\ gro.gilbert @ treblig.org | | In Hex /
\ _________________________|_____ http://www.treblig.org |_______/
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