[clug-talk] PARTIAL SUCCESS: Shut off the 'tap' on my touchpad.

Jon me at jonwatson.ca
Sun Sep 4 09:53:30 PDT 2005

Thanks for the tip Shawn. This is my first foray into my X config so there's a 
lot of stuff in there that I don't understand.

I've managed to get to the point where if I boot with the USB mouse plugged 
in, then both the mouse and the touchpad work complete with the annoying 
tapping (just as before). 

If I boot without the USB mouse plugged in, the the touchpad works without 
tapping! Yay!

It's still a little weird because even when there's no USB mouse plugged in 
and I am running completely off the touchpad, none of KDE's Touchpad controls 
work in the Control Centre but the mouse options do. This means I can control 
the acceleration and precision and such, but I have no access to the 'finer' 
controls of the touchpad like scrolling and the like. Right now I really 
don't care though - as long as the stupid tapping is gone I'm happy.

At the end of the day, the only thing I ended up doing was changing one of the 
two lines from my XF86Config-4 file that you quoted below. Now instead of 
them both reading CorePointer, they read:

InputDevice    "USB Mouse" "AlwaysCore"
InputDevice    "Synaptics Mouse"  "CorePointer"

I'll be the first to admit that I don't know the difference and perhaps 
there's more tweaking I can do, but stumbled across the AlwaysCore thing 
somewhere in my travels trying to sort this out.

So..pretty happy. I'd like to have full touchpad support, but I can at least 
live with this.

Anyone want to comment on other ways I might get full functionality out of 
this thing?



On September 4, 2005 03:32 am, Shawn wrote:
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> On Saturday 03 September 2005 22:47, Jon wrote:
> >         InputDevice    "USB Mouse" "CorePointer"
> >         InputDevice    "ALPS Touchpad"  "Core Pointer"
> The above two lines in your X Config seem to indicate you're using the same
> drive for both the mouse and the touchpad.  Perhaps you can use a different
> driver for the touchpad?  Or maybe you can add an option to the "ALPS
> Touchpad" input device section? If so, then there may be other options you
> can "tweak" in the config...
> for example, I have the following in my config:
> Section "InputDevice"
>         Identifier  "Mouse0"
>         Driver      "mouse"
>         Option      "Protocol" "Auto"
>         Option      "Device" "/dev/input/mouse0"
>         Option      "ZAxisMapping"    "4 5"
> EndSection
> Because I have an actual 3 button mouse, I don't need to emulate it, so
> that option was removed.  The ZAxisMapping was needed so the scroll would
> work properly.  Maybe there's an appropriate "Option" for the tap (maybe
> when you're using a different driver)?
> (Take the above with a grain of salt... I don't consider myself an expert
> with X configs....)
> Shawn
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