linux-kernel - Lenovo X220 Touchpad + Trackpoint BIOS issue workaround ?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [day] [month] [year] [list]

Date:	Tue, 05 Apr 2011 09:53:04 -0500
From:	Manoj <manoj.iyer@...onical.com>
To:	linux-input@...r.kernel.org
CC:	LKML <linux-kernel@...r.kernel.org>
Subject: Lenovo X220 Touchpad + Trackpoint BIOS issue workaround ?

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?

-- 
Manoj Iyer
Ubuntu/Canonical
Hardware Enablement
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/