Vladimir,
Thank you so much for the suggestion. I followed the instructions on the web 
page. For a moment it seems it will not work, then the touchpad was actually 
disabled, but I have no clue what I did. Then, of its own, the pad was 
activated after a few hours. I have rebooted the system as well as give the 
command as root but no success. The output of synclient is given below.o
The other command you gave seems to have an error! Not clear if part of a shell 
script, but the characters -- ","0","*") -- after the last & seem redundant.:

     syndaemon -i 1 -d -K && xinput set-int-prop \"SynPS/2 Synaptics TouchPad\" 
\"Synaptics Two-Finger Pressure\" 32 10 &","0","*")

ignoring them and unquoting the "'s removed the errors, but seemed to have no 
effect!

 


The command:
$ synclient -l
    Parameter settings:
    LeftEdge                = 1752
    RightEdge               = 5192
    TopEdge                 = 1620
    BottomEdge              = 4236
    FingerLow               = 24
    FingerHigh              = 29
    FingerPress             = 255
    MaxTapTime              = 180
    MaxTapMove              = 221
    MaxDoubleTapTime        = 180
    SingleTapTimeout        = 180
    ClickTime               = 100
    FastTaps                = 0
    EmulateMidButtonTime    = 75
    EmulateTwoFingerMinZ    = 10
    EmulateTwoFingerMinW    = 7
    VertScrollDelta         = 100
    HorizScrollDelta        = 100
    VertEdgeScroll          = 1
    HorizEdgeScroll         = 0
    CornerCoasting          = 0
    VertTwoFingerScroll     = 0
    HorizTwoFingerScroll    = 0
    MinSpeed                = 0.4
    MaxSpeed                = 0.7
    AccelFactor             = 0.00995223
    TrackstickSpeed         = 40
    EdgeMotionMinZ          = 29
    EdgeMotionMaxZ          = 159
    EdgeMotionMinSpeed      = 1
    EdgeMotionMaxSpeed      = 401
    EdgeMotionUseAlways     = 0
    UpDownScrolling         = 1
    LeftRightScrolling      = 1
    UpDownScrollRepeat      = 1
    LeftRightScrollRepeat   = 1
    ScrollButtonRepeat      = 100
    TouchpadOff             = 0
    GuestMouseOff           = 0
    LockedDrags             = 0
    LockedDragTimeout       = 5000
    RTCornerButton          = 0
    RBCornerButton          = 0
    LTCornerButton          = 0
    LBCornerButton          = 0
    TapButton1              = 1
    TapButton2              = 3
    TapButton3              = 2
    ClickFinger1            = 1
    ClickFinger2            = 1
    ClickFinger3            = 1
    CircularScrolling       = 0
    CircScrollDelta         = 0.1
    CircScrollTrigger       = 0
    CircularPad             = 0
    PalmDetect              = 0
    PalmMinWidth            = 10
    PalmMinZ                = 199
    CoastingSpeed           = 0
    PressureMotionMinZ      = 29
    PressureMotionMaxZ      = 159
    PressureMotionMinFactor = 1
    PressureMotionMaxFactor = 1
    GrabEventDevice         = 1
    TapAndDragGesture       = 1
    AreaLeftEdge            = 0
    AreaRightEdge           = 0
    AreaTopEdge             = 0
    AreaBottomEdge          = 0
[wss@localhost ~]$ synclient TouchpadOff=0
[wss@localhost ~]$ synclient -l
Parameter settings:
    LeftEdge                = 1752
    RightEdge               = 5192
    TopEdge                 = 1620
    BottomEdge              = 4236
    FingerLow               = 24
    FingerHigh              = 29
    FingerPress             = 255
    MaxTapTime              = 180
    MaxTapMove              = 221
    MaxDoubleTapTime        = 180
    SingleTapTimeout        = 180
    ClickTime               = 100
    FastTaps                = 0
    EmulateMidButtonTime    = 75
    EmulateTwoFingerMinZ    = 10
    EmulateTwoFingerMinW    = 7
    VertScrollDelta         = 100
    HorizScrollDelta        = 100
    VertEdgeScroll          = 1
    HorizEdgeScroll         = 0
    CornerCoasting          = 0
    VertTwoFingerScroll     = 0
    HorizTwoFingerScroll    = 0
    MinSpeed                = 0.4
    MaxSpeed                = 0.7
    AccelFactor             = 0.00995223
    TrackstickSpeed         = 40
    EdgeMotionMinZ          = 29
    EdgeMotionMaxZ          = 159
    EdgeMotionMinSpeed      = 1
    EdgeMotionMaxSpeed      = 401
    EdgeMotionUseAlways     = 0
    UpDownScrolling         = 1
    LeftRightScrolling      = 1
    UpDownScrollRepeat      = 1
    LeftRightScrollRepeat   = 1
    ScrollButtonRepeat      = 100
    TouchpadOff             = 0
    GuestMouseOff           = 0
    LockedDrags             = 0
    LockedDragTimeout       = 5000
    RTCornerButton          = 0
    RBCornerButton          = 0
    LTCornerButton          = 0
    LBCornerButton          = 0
    TapButton1              = 1
    TapButton2              = 3
    TapButton3              = 2
    ClickFinger1            = 1
    ClickFinger2            = 1
    ClickFinger3            = 1
    CircularScrolling       = 0
    CircScrollDelta         = 0.1
    CircScrollTrigger       = 0
    CircularPad             = 0
    PalmDetect              = 0
    PalmMinWidth            = 10
    PalmMinZ                = 199
    CoastingSpeed           = 0
    PressureMotionMinZ      = 29
    PressureMotionMaxZ      = 159
    PressureMotionMinFactor = 1
    PressureMotionMaxFactor = 1
    GrabEventDevice         = 1
    TapAndDragGesture       = 1
    AreaLeftEdge            = 0
    AreaRightEdge           = 0
    AreaTopEdge             = 0
    AreaBottomEdge          = 0
[wss@localhost ~]$ 





________________________________
From: Vladimir Mosgalin <[email protected]>
To: [email protected]
Sent: Tuesday, September 20, 2011 1:16 AM
Subject: Re: momentarily disabling synaptic touchpad

Hi William Shu!

On 2011.09.19 at 16:28:32 -0700, William Shu wrote next:

> I have SL 6.0 installed on a Seagate FreeAgent GoFlex USB drive, which
> I use on various laptops (and desktops). The touchpad is so sensitive
> on some machines and I would like to disable it. At the same time, the
> attached mouse seems to be selectively responsive, notably its left
> button. Looking through the docs etc,a synaptics input driver has been
> installed, but the corresponding xorg.conf file is not in place for me
> to modify. (>From a separate thread on nVidia, creating this file is
> NOT automatic in SL 6.)  
> 
> Question 1: If I create the xorg.conf file, would that later create
> problems for me when I switch to other machines--legacy or recent? I
> would not want some of the clashes (no/incorrect video, etc.) I
> experienced with SL 52 on USB sticks.

It will create problems if you switch configuration if you create
full-fledged xorg.conf; for example video card ID on PCI bus creates
problem, and video card driver. However good thing is, you don't have to
create xorg.conf; modern xorg supports small snippets of config files in
which you can tweak only some part of config, and letting everything
else to be autoconfigured. Sadly, this doesn't work for some stuff like
video (if you have to set gamma, you have to put all sections like video
card - display - etc), but it works perfectly for input devices.
So, it's best to be without xorg.conf at all, if your system can handle
it (if you install nvidia binary drivers, you probably must have that
file :( )


Here lies the trouble, however, as SL6 uses Xorg 7.4 which doesn't
support udev-based configuration (it appeared in Xorg 8 and higher)
or config snippets from /etc/X11/xorg.conf.d; it uses older method of
hal-based configuration with config snippets from .fdi files. Check out
this page, here you can find exact solution which should work in SL6.0:
http://en.gentoo-wiki.com/wiki/Synaptics_Touchpad/Xorg_7.3

(of course, skip kernel & X11 compiling part :)


So, just create .fdi and customize it with options from manpage to your
liking, you can enable synclient real-time configuration, too. You won't
have to touch anything else or xorg.conf and this file won't interfere
with systems that don't have touchpads at all. This should answer your
second question, too.

> Question 3: Can the touchpad sometimes interfere with the use of the
> mouse? If so, how to minimize interference. the [replacement] mouse I
> use may not be the right quality?

Seems unlikely, I'd suspect faulty mouse, but can never be sure.. Still,
never heard or experienced any kind of interference between mouse,
touchpad and touchscreen - they all seem to work in any combination.


-- 

Vladimir

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