linux-kernel - Re: Regression: ps2mouse not working in 2.6.34

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Message-ID: <4C28D96B.6060409@teksavvy.com>
Date:	Mon, 28 Jun 2010 13:18:35 -0400
From:	Mark Lord <kernel@...savvy.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: Regression: ps2mouse not working in 2.6.34

On 28/06/10 12:33 PM, Dmitry Torokhov wrote:
> On Mon, Jun 28, 2010 at 12:04:46PM -0400, Mark Lord wrote:
>> Okay, who broke it, and how do I re-enable it?
>>
>> The PS/2 mice on my systems here don't do anything with 2.6.34.
>> One system complains that I need to boot with i8042.nopnp to enable it,
>> which I also tried, but still nogo.  Same behaviour with or without
>> /dev/psaux enabled.  64-bit kernel.
>>
>> The other system, running older userspace, hangs at the X-server startup
>> because it cannot find the mouse.  No i8042 warnings.   32-bit kernel.
>>
>> Both systems working fine with older kernels.
>> Google finds lots of other people discovering the same problem.
>>
>> What gives?
>>
>
> Well, lest start small: did it work ifor you with 2.6.33? Does kernel
> discover AUX serio port (dmesg)? What about the mouse itself? Is it
> absent or is it not reporting events?
..

I started by crawling into the wire nest under the table.  :)

After a certain amount of experimentation, it appears that the newer
kernel is not compatible with the USB-to-PS2 dongle on the end of the mouse.
I found a different USB-to-PS2 dongle which does work, though.

Very weird.  I can mail you the other dongle if are really interested
in figuring out what broke and fixing it.

Otherwise, things are now working here again after the hardware change.

Cheers
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