Buttonless Touchpad

2014-04-16T12:46:06Z

Simbuerg: /* Configuration */

The '''buttonless touchpad''' first appeared on the {{X220}} and {{X1}} (and possibly some IdeaPads) and is missing buttons below the trackpad. The trackpad can be pushed for a physical click, pivoting from the top. There is only one switch so the middle and right click must be configured by driver software.

== Configuration ==

All functionality should work out of the box apart from possibly right click.

Arch Linux has a version of xf86-input-synaptics in the AUR compiled for "clickpads" called [http://aur.archlinux.org/packages.php?ID=38120 xf86-input-synaptics-clickpad]

== Problems ==

The default configuration of the xf86-input-synaptics driver makes the clickpad
almost unusable (on the T440s). Clicks/Taps do not register properly, misclicking,
no palm detection, no soft buttons where they should be, and so on...

The following configuration can be put in /etc/X11/xorg.conf.d/99-synaptics.conf
As a result the clickpad will react a lot more 'calm' than before and the middle & right
click button areas match with the printed ones on top of the clickpad.
<pre>
Section "InputClass"
Identifier "Default clickpad buttons"
MatchDriver "synaptics"

Option "SoftButtonAreas" "60% 0 0 2400 40% 60% 0 2400"
Option "AreaTopEdge" "2400"

Option "TapButton1" "1"
Option "TapButton3" "2"
Option "TapButton2" "3"

# Calm the pad down while clicking
Option "VertHysteresis" "50"
Option "HorizHysteresis" "50"

# Drag lock
Option "LockedDrags" "1"

# Tap to click
Option "FingerLow" "50"
Option "FingerHigh" "55"

# Prevent accidental clicks
Option "PalmDetect" "1"
Option "PalmMinWidth" "5"
Option "PalmMinZ" "40"

# Natural scrolling
Option "VertTwoFingerScroll" "1"
Option "VertScrollDelta" "-90"
Option "HorizTwoFingerScroll" "1"
Option "HorizScrollDelta" "-90"

Option "MinSpeed" "1"
Option "MaxSpeed" "1"

Option "AccelerationProfile" "2"
Option "ConstantDeceleration" "4"
EndSection
</pre>

==Models featuring this Technology==

* {{E431}}, {{E531}}
* {{S440}}, {{S540}}
* {{T431}}, {{T431s}}, {{T440}}, {{T440p}}, {{T440s}}, {{T540}}, {{T540p}}
* {{W540}}
* {{X1}}, {{X1 Carbon}}, {{X220}}, {{X230}}, {{X240}}, {{X240s}}
* ThinkPad {{Yoga}}
* ThinkPad {{Helix}}

DisplayPort

2010-08-20T14:18:01Z

Simbuerg: /* Audio Support */

__NOTOC__
{| width="100%"
<div style="margin: 0; margin-right:10px; border: 1px solid #dfdfdf; padding: 0em 1em 1em 1em; background-color:#F8F8FF; align:right;">
DisplayPort is a digital video connector, available on select ThinkPads

</div>
|}

* [[Wikipedia:DisplayPort| Wikipedia article on DisplayPort]]

==ThinkPads featuring this technology==
* {{L412}}, {{L512}}
* {{T400s}}, {{T410}}, {{T410i}}, {{T410s}}, {{T410si}}, {{T500}}, {{T510}}, {{T510i}}
* {{W500}}, {{W510}}, {{W700}}, {{W700ds}}, {{W701}}, {{W701ds}}
* {{X301}}

==Port Replicators and Docks featuring this technology==
* [[ThinkPad Mini Dock Series 3]]
* [[ThinkPad Mini Dock Plus Series 3]]
* [[ThinkPad Mini Dock Plus Series 3 for Mobile Workstations]]
* [[X200 UltraBase]]
* [[W700 Mini Dock]]
* [[W700 Mini Dock 2.0]]

== DVI Pass-through ==

Certain ThinkPad models have a DisplayPort connection which offers DVI pass-through.

Check [http://www-307.ibm.com/pc/support/site.wss/MIGR-72148.html ThinkPad Digital Video Interface (DVI) and DVI Pass-Through] for more information, and to see if a specific model and configuration is supported.

== Audio Support ==

There are reports that DisplayPort on some (possibly all) current thinkpads does not support audio. While there are adapters to convert DisplayPort to HDMI, the lack of audio makes it impossible to, for example, watch a DVD or Blu-Ray on an HDTV using the DisplayPort. [http://forums.lenovo.com/t5/W-Series-ThinkPad-Laptops/Displayport-to-HDMI-with-audio/td-p/68575 See this thread for more information]

Audio over DisplayPort when used in conjunction with a DisplayPort to HDMI conversion cable is [http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/T410-T510-DisplayPort-features-audio/td-p/191530/page/3 confirmed] to work on W500, T410 and T510 both on integrated and discrete graphics options on Windows systems.

=== T410s ===

The T410s supports audio pass-through via DisplayPort on recent Linux systems.

With the Intel HD Audio modul selected recent linux kernels detect the DisplayPort
audio as a separate output device:

On 2.6.36-rc1 the following devices can be found in /proc/asound/*

Codec: Intel IbexPeak HDMI
Device: name="INTEL HDMI 0", type="HDMI", device=3
Device: name="INTEL HDMI 1", type="HDMI", device=7

If you want to pass Audio via DisplayPort you just have to switch to the Intel HDMI audio output device
for the application in PulseAudio (didn't test with pure ALSA).

== External Sources ==
* [http://www-307.ibm.com/pc/support/site.wss/MIGR-72148.html ThinkPad Digital Video Interface (DVI) and DVI Pass-Through]
* [http://www-307.ibm.com/pc/support/site.wss/MIGR-70321.html DisplayPort Monitor Cables - Overview]

ThinkWiki - User contributions [en]

Buttonless Touchpad

DisplayPort