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Acer 1825 enable multitouch features for touchpad

By Christopher

This is a short instruction to enable 2 finger scrolling on the touchpad of the Acer 1825:

create a script and open it with an editor

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touch touchpad.run

gedit touchpad.run

copy  and paste the following lines into the script

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#!/bin/sh

#

# Use xinput --list-props "SynPS/2 Synaptics TouchPad" to extract data

#

sleep 10 #is necessary to have all modules load before the script runs

# Set multi-touch emulation parameters

xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Two-Finger Pressure" 32 10

xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Two-Finger Width" 32 8

xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Two-Finger Scrolling" 8 1

xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Two-Finger Scrolling" 8 1 1

# Disable edge scrolling

xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Edge Scrolling" 8 0 0 0

# This will make cursor not to jump if you have two fingers on the touchpad and you list one

# (which you usually do after two-finger scrolling)

xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Jumpy Cursor Threshold" 32 110

save the script and enable following permissons:

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chmod +x touchpad.run

Last step you need to add the script to the autostart programs:

System–>preferences->startprograms

touchpad multitouch autostart

#!/bin/sh
#
# Use xinput –list-props “SynPS/2 Synaptics TouchPad” to extract data
#
sleep 10 #is necessary to have all modules load before the script runs
# Set multi-touch emulation parameters
xinput set-int-prop “SynPS/2 Synaptics TouchPad” “Synaptics Two-Finger Pressure” 32 10
xinput set-int-prop “SynPS/2 Synaptics TouchPad” “Synaptics Two-Finger Width” 32 8
xinput set-int-prop “SynPS/2 Synaptics TouchPad” “Two-Finger Scrolling” 8 1
xinput set-int-prop “SynPS/2 Synaptics TouchPad” “Synaptics Two-Finger Scrolling” 8 1 1
# Disable edge scrolling
xinput set-int-prop “SynPS/2 Synaptics TouchPad” “Synaptics Edge Scrolling” 8 0 0 0
# This will make cursor not to jump if you have two fingers on the touchpad and you list one
# (which you usually do after two-finger scrolling)
xinput set-int-prop “SynPS/2 Synaptics TouchPad” “Synaptics Jumpy Cursor Threshold” 32 110

Then reboot and you should be able to scroll with two fingers.

10 comments

  2. Not working!
    OS: Linux Mint 10 (=Ubuntu 10.10)
    Kernel: 2.6.35-22

    After the script is startet neither the “normal” scroll (right side of touchscreen) nor the multitouch works.

    Just double checked the script – it’s complete & set +x

    Btw – why the
    [code]touch touchpad.run[/code]
    the 2nd step (gedit) is enough to create the (new) document.

    1. Hey I am a bit confused,
      it is working for you or not?

      with touch and gedit you are right, I wanted to make clear, that you need to create this file.

      what to you mean with & set +x?

      If you have problems that the script sometimes works after startup, sometimes not increase the sleep time

      1. Hoi

        I mean it is not working.
        After running the script neither the multitouch nor the normal side-scroll is working. So i removed the script from startup menu fopr now.

        set +x
        I mean the script is set as executable, as described in your HowTo.

        My PC is absoloutly freshly set up – no changes done yet.
        Oh – and no updates so far. I’m doing that now. Maybe that makes a difference?

        You do have the 1825ptz, don’t you? With Ubuntu 10.10?
        So if the script works for you, it’s quase impossible NOT to work on mine, eh?

          1. Sleep time changed to 20 – no difference (not working)
            OS updates are installed.
            Yet – i run the 32bit version. Didn’t even know it’s a 64bit Processor.

            Guess i’ll have a look at the 64bit version the next days. For now i allready spent way too much time trying to fix this essentiall missing feature.
            I just gave my “old” Fujitsu U9200 to a friend – and i realy miss the multitouch badly…

  5. Is this extendable? do you think we can get rotation and such working to? I heard of touchegg – supposed to help with this sort of thing

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