From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Manoj <manoj.iyer@canonical.com>
Cc: linux-input@vger.kernel.org
Subject: Re: Lenovo X220 Touchpad + Trackpoint BIOS issue workaround ?
Date: Tue, 5 Apr 2011 10:39:40 -0700 [thread overview]
Message-ID: <20110405173940.GA13086@core.coreip.homeip.net> (raw)
In-Reply-To: <4D9B522B.7080201@canonical.com>
On Tue, Apr 05, 2011 at 12:32:27PM -0500, Manoj wrote:
> Any thoughts on this one?
>
When both are enabled in BIOS what protocol does the kernel use to talk
to the touchpad? Does it use synaptics protocol?
Thanks.
> Manoj Iyer
> Ubuntu/Canonical
> Hardware Enablement
>
> On 04/05/2011 09:53 AM, Manoj wrote:
> >The Lenovo X220 has a touch pad and a track point. I would like to get
> >some clues as to if there is any work around in the kernel for the issue
> >I am seeing below:
> >
> >Case 1: Touchpad and Trackpoint enabled in BIOS.
> >================================================
> >In this case the touchpad works correctly, but the trackpoint is not
> >detected at all. Some times after random number of reboots, the
> >trackpoint will start to respond approximately 15mts after X starts. But
> >the mouse will be detected as PS2 Generic Mouse.
> >
> >Case 2: Touchpad Disabled Trackpoint Enabled in BIOS
> >======================================================
> >In this case the trackpoint works as expected, and it is detected as
> >TPPS/2 IBM TrackPoint.
> >[ 9.675396] input: TPPS/2 IBM TrackPoint as
> >/devices/platform/i8042/serio1/input/input9
> >
> >I suspect this is a BIOS bug? Is it possible to work around this in the
> >kernel?
> >
> >
--
Dmitry
next prev parent reply other threads:[~2011-04-05 17:39 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-05 14:53 Lenovo X220 Touchpad + Trackpoint BIOS issue workaround ? Manoj
2011-04-05 17:32 ` Manoj
2011-04-05 17:39 ` Dmitry Torokhov [this message]
2011-04-05 17:57 ` Manoj
2011-04-05 18:30 ` Dmitry Torokhov
2011-04-05 22:02 ` Manoj
2011-04-05 22:19 ` Manoj
2011-04-05 22:40 ` Manoj
2011-04-06 17:03 ` Manoj
2011-04-06 17:12 ` Dmitry Torokhov
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