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Re: touchpad does not recognize multitouch

 

Hi all,

New to the list.  Just got my Adamo last week.

Just in case anyone is still wondering about this, two finger scrolling is 
indeed possible on the Adamo.  I'm scrolling right now :-).  I have Lucid 
installed, but it should work in Karmic as well.

Here's what I had to do:

Edit the following file;
sudo vi /usr/lib/X11/xorg.conf.d/10-synaptics.conf

Add the following three "option" strings in the first block to look like this:

Section "InputClass"
        Identifier "touchpad catchall"
        MatchIsTouchpad "on"
        MatchDevicePath "/dev/input/event*"
        Driver "synaptics"
        Option "VertTwoFingerScroll" "true"
        Option "EmulateTwoFingerMinZ" "10"
        Option "EmulateTwoFingerMinW" "8"
EndSection


Save the file.  This in theory would make two finger scrolling possible, however 
there is a bug in that the VertTwoFingerScroll option is not honored at startup 
(pressure and width are honored), so you have to use a work-around.

Create a file in your home directory:
vi ~/.twofingerscroll

Add the following:
#!/bin/bash
sleep 10 &&
exec synclient VertTwoFingerScroll=1 &
exit

Make it executable:
chmod +x ~/.twofingerscroll

Add it to your startup items in System -> Preferences -> Startup Applications

Reboot.

Enjoy two finger goodness :-)

Hope this helps.

Matthew Percival

PS - You can also add horizontal scrolling if you'd like.  Add the option line 
to xorg and to the workaround using [HorizTwoFingerScroll].



dominic bestler wrote:

Here is what lsusb -v lists for the device. i didnt find anything yet. please 
report if anybody finds out how to activate multitouch.Bus 008 Device 004: ID 
413c:8158 Dell Computer Corp. Device Descriptor:  bLength                18  
bDescriptorType         1  bcdUSB               2.00  bDeviceClass            0 
(Defined at Interface level)  bDeviceSubClass         0  bDeviceProtocol         
0  bMaxPacketSize0         8  idVendor           0x413c Dell Computer Corp.  
idProduct          0x8158  bcdDevice            1.00  iManufacturer           0  
iProduct                0  iSerial                 0  bNumConfigurations      1  
Configuration Descriptor:    bLength                 9    bDescriptorType         
2    wTotalLength           62    bNumInterfaces          1    
bConfigurationValue     1    iConfiguration          0    bmAttributes         
0xe0      Self Powered      Remote Wakeup    MaxPower                2mA    
Interface Descriptor:      bLength                 9      bDescriptorType         
4      bInterfaceNumber        0      bAlternateSetting       0      
bNumEndpoints           1      bInterfaceClass         3 Human Interface Device      
bInterfaceSubClass      1 Boot Interface Subclass      bInterfaceProtocol      2 
Mouse      iInterface              0      ** UNRECOGNIZED:  09 21 11 01 00 01 22 
71 00      Endpoint Descriptor:        bLength                 7        
bDescriptorType         5        bEndpointAddress     0x81  EP 1 IN        
bmAttributes            3          Transfer Type            Interrupt          
Synch Type               None          Usage Type               Data        
wMaxPacketSize     0x0004  1x 4 bytes        bInterval              10 ** 
UNRECOGNIZED: 1c ff 42 49 53 54 00 01 03 08 05 00 00 00 00 00 01 09f4 01 02 0a 
f4 01 03 0b f4 01 Device Status:     0x0001  Self Powered     ps: on windows 7 
even three finger work. very nice in firefox -> wiping with 3 fingers left/right 
makes the browser to forward / backward history.Sean Bradshaw wrote: 

Oh that would be really sweet. I didn't even know the hardware supported 
multitouch. Unfortunately I don't have any idea's, but keepyour ears open, and 
I'll be sure and bump your thread for interest.
>-Sean    dominic bestler wrote: 
>My original post from here: http://ubuntuforums.org/showthread.php?p=8637519
>>* * ------------------------------------------------------------------------ hi 
>>guys  i have karmic installed on my dell adamo. according to synclient -m 500 
>>the touchpad does not recognize multiple fingers at the sametime. ive already 
>>tried to activate two finger scroll with system > preferences > mouse. it does 
>>not work.i know the hardware is able to recognize multitouch because its working 
>>on windows 7.
>>what can i do? upgrade synaptics driver?   thanks for your help.  
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