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Date: Sat, 24 Oct 2009 14:10:46 -0700
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Harald Dunkel <harald.dunkel@t-online.de>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>, linux-kernel@vger.kernel.org
Subject: Re: 2.6.31.4, ps2-to-usb adapter: fourth mouse button not working
Message-ID: <20091024211045.GB15297@core.coreip.homeip.net>
References: <1N1EA3-10pOoy0@fwd05.aul.t-online.de> <20091023073730.GB10914@srcf.ucam.org> <4AE2C572.1030209@t-online.de>
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Hi Harald,

On Sat, Oct 24, 2009 at 11:14:26AM +0200, Harald Dunkel wrote:
> On 10/23/09 09:37, Matthew Garrett wrote:
>> Sorry, just noticed that you said it was an active one. Does it generate
>> wheel events for any other PS/2 mice? It may simply be a limitation of
>> the hardware.
>>
>
> Using a regular mouse with 3 buttons and a wheel there is no problem.
> All work fine. But it just got 3 buttons. I've got problems with a
> fourth button, so the PS/2 mouse doesn't show.
>
> Is there a hardwired limit to 3 buttons somewhere in the code?

No, but the 4th button of your TackMan requires Logitech's PS/2++
protocol extension which your USB converter is not likely to support.

I believe most of them speak bare, Intellimouse and Expolorer PS/2
protocols...

-- 
Dmitry
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