[NC10] Improving the 2 fingers scrolling

[miplou]

Hi !

I noticed that the 2 fingers scrolling is finally working ! But very poorly and randomly...
Do you know how to improve it in conf files ?

Many thanks !




PS : Sorry if my english is bad...

[voria]

I think this is all we can have for now, apparently the NC10 has not a real multitouch touchpad, so the function is emulated at the best.

Anyway, you can try with 'synclient' options to change touchpad options, in order to find the best settings for your taste.

[miplou]

Okay

Thanks anyway !

[sk_]

hi!

i've been using the following setup on my nc10 for weeks and it works perfectly most of the time. Scrolling with 2 fingers is smooth. you can even scroll with your thumb only while typing. i don't use two or three finger click. maybe this helps someone.

to edit your synaptics configuration you have to edit /etc/hal/fdi/policy/11-x11-synaptics.fdi:

Code: Select all

sudo gedit /etc/hal/fdi/policy/11-x11-synaptics.fdi

this is my config:

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<?xml version="1.0" encoding="ISO-8859-1"?>
<deviceinfo version="0.2">
 <device>                                                                                                                              
    <match key="info.capabilities" contains="input.touchpad">
      <match key="info.product" contains="Synaptics TouchPad">
        <merge key="input.x11_driver" type="string">synaptics</merge>
        <merge key="input.x11_options.VertEdgeScroll" type="string">1</merge>
        <merge key="input.x11_options.HorizEdgeScroll" type="string">1</merge>
        <merge key="input.x11_options.TapButton1" type="string">1</merge>
        <merge key="input.x11_options.TapButton2" type="string">2</merge> <!--two finger tap - right click(2) -->
        <merge key="input.x11_options.TapButton3" type="string">3</merge> <!--three finger tap - middle click(3). almost impossible to click -->
        <merge key="input.x11_options.VertScrollDelta" type="string">300</merge> <!-- vert scroll speed. higher=slower-->
        <merge key="input.x11_options.HorizScrollDelta" type="string">300</merge> <!-- horiz scroll speed. higher=slower-->
        <merge key="input.x11_options.SHMConfig" type="string">On</merge>
        <merge key="input.x11_options.EmulateTwoFingerMinZ" type="string">10</merge>
        <merge key="input.x11_options.EmulateTwoFingerMinW" type="string">5</merge>
        <merge key="input.x11_options.VertTwoFingerScroll" type="string">1</merge>
        <merge key="input.x11_options.HorizTwoFingerScroll" type="string">1</merge>
        <merge key="input.x11_options.PalmDetect" type="string">1</merge>
      </match>

      <match key="info.product" contains="AlpsPS/2 ALPS">
        <merge key="input.x11_driver" type="string">synaptics</merge>
      </match>
      <match key="info.product" contains="appletouch">
        <merge key="input.x11_driver" type="string">synaptics</merge>
      </match>
      <match key="info.product" contains="bcm5974">
        <merge key="input.x11_driver" type="string">synaptics</merge>
      </match>
    </match>
  </device>
</deviceinfo>

to make scrolling almost as smooth as with win xp, i use the SmoothScroll Extension for the Chromium Browser. There are similar extensions for Firefox and opera has a smooth scrolling option too.

[miplou]

Perfect ! 2 fingers scrolling is really better with this config !
Many thanks sk_ !
I'm using Chromium too, I will try this extension !

[penguinskill]

Hi, I have just copied and pasted the above configuration into /etc/hal/fdi/policy/11-x11-synaptics.fdi but my two finger scrolling is still quite jumpy and not smooth (as in not usable). I'm using a fresh installation of ubuntu 9.10, is there any other tips to getting it to work well or something I might be missing?

[voria]

I've never get a fully working two finger scrolling. The touchpad on NC10 does not support two finger scrolling in hardware, all we can do is to emulate it (with bad results, I'd say).
Personally, I've ended up to disable completely the two finger scrolling function.

Just for the record, in Lucid the two finger scrolling option on my NC10 is not available at all.

[miplou]

Strange, sk_'s configuration works perfectly on my NC10... It's really better than scrolling area on the right side of touchpad !

[svenmeier]

Hi,

looking for 2 finger scrolling support I've found the following script for Synaptic touchpads
(see http://mixeduperic.com/linux/ubuntu-100 ... h-pad.html):

#!/bin/bash
synclient VertTwoFingerScroll=1
synclient HorizTwoFingerScroll=1
synclient EmulateTwoFingerMinW=5
synclient EmulateTwoFingerMinZ=48

Works like a charm on my NC10 .

Could this be something to include in Samsung Tools?

Best regards

Sven

[svenmeier]

I forgot to mention why I ended up with this shell script:
- hal is no longer used in default Ubuntu, so an fdi policy does not work .
- creating an x11 configuration in /usr/share/X11/xorg.conf.d/50-twofingerscroll.conf (as suggested here http://wiki.ubuntuusers.de/xorg.conf.d# ... ei-Fingern ) successfully changed the synaptics settings (synclient -l), but two finger scrolling still didn't work.

Sven

[svenmeier]

After some more digging into this issue, I came to the following solution:

- Create a file /usr/share/X11/xorg.conf.d/50-twofingerscroll.conf :

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Section "InputClass"
	Identifier	"two finger scrolling for touchpad"
	MatchProduct	"SynPS/2 Synaptics TouchPad"
	MatchDevicePath	"/dev/input/event*"
	Option		"VertTwoFingerScroll"	"on"
	Option		"HorizTwoFingerScroll"	"on"
	Option		"EmulateTwoFingerMinW"	"5"
	Option		"EmulateTwoFingerMinZ"	"48"
EndSection

- force the gnome-settings-deamon to use 2-fingers scrolling with the following command (otherwise it will override the settings in the .conf above):

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gconftool --type int --set /desktop/gnome/peripherals/touchpad/scroll_method 2

Have fun

Sven