linux-kernel - Re: [PATCH v2 0/7] New Lenovos 2015 touchpads: party time!

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Message-ID: <20150319142450.GA1641@balvenie>
Date:	Thu, 19 Mar 2015 15:24:51 +0100
From:	Yves-Alexis Perez <corsac@...ian.org>
To:	Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Andrew Duggan <aduggan@...aptics.com>,
	Hans de Goede <hdegoede@...hat.com>,
	Peter Hutterer <peter.hutterer@...-t.net>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/7] New Lenovos 2015 touchpads: party time!

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On Fri, Feb 06, 2015 at 03:04:28PM -0500, Benjamin Tissoires wrote:
> Hi,
> 
> This is the second episode of the Lenovo 2015 party :)
> 
> Thanks to Andrew, we now have an idea within the driver of what are the extra
> buttons aimed for, and the patch series looks cleaner.
> Many thanks for your help.
> 
> I marked only patches 1/7, 2/7 and 3/7 as stable because they are really
> stable fixes. Without the rest of the series, user-space can cope with the
> kernel result, and so there is IMO no need to backport too many patches in
> stable. I bet distributions will cherry-pick the rest of the series however.
> 
Hi,

I recently bought a ThinkPad X250 [1]. I'm running Debian sid with the
4.0-rc4 kernel right now.

I don't use the touchpad at all, but rather the trackpoint, so I
disabled the touchpad in the BIOS. Following some advice, I setup the
input system using psmouse.proto=imps with a custom Xorg.conf.d config
file for the “touchpad” (the Trackpoint device disappears when using
IMPS). It works fine with xf86-input-evdev, and the psmouse module
correctly respects the BIOS setting (the touchpad itself is disabled).

Then I was made aware of that patch set and of the xf86-input-synaptics
patches [2].

I tried the patchset at [3], disabling the psmouse.proto=imps, but I
don't yet installed xf86-input-synaptics. Here are the results:

- - the trackpoint device reappears
- - the hardware buttons seem to work, and are assigned the the trackpoint
  device (and can configured using the standard trackpoint config file)
- - the touchpad is enabled, so it looks like the BIOS setting is not
  respected

So I have two questions/remarks about this:

- - if I don't use the touchpad, do I need xf86-input-synaptics at all?
- - how can I have the BIOS setting respected by the psmouse/synaptics
  kernel module (like when using psmouse)

Thanks for your patchset anyway, and regards,

[1] http://www.corsac.net/X250
[2] http://cgit.freedesktop.org/xorg/driver/xf86-input-synaptics/
[3] https://git.kernel.org/cgit/linux/kernel/git/dtor/input.git/log/
- -- 
Yves-Alexis
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