I finally got synclient (SHMconfig) running. Once I figured out that in
addition to having an InputDevice section for the Synaptics Touchpad, I had to
add a line to the ServerLayout section (i.e., InputDevice "Synaptics
Touchpad"). This addition allowed the option "SHMConfig" "on" in my
previously added Input Device section to have effect.
At that point 'synclient -l <enter>' from a terminal window gave me all of the
current option values. I shut off tapping with the command 'synclient
MaxTapTime=0 <enter". This worked as I desired, so I set up an action in
preferences->startup called "Synclient" with the command "synclient
MaxTapTime=0". My ubuntu system now works as I like it to and has supplanted
(mostly) use of windows xp dual boot.
This took a lot of digging and guessing (e.g., setting MaxTapTime=0). In
Windows XP it works like this:
control panel -> Mouse ->Touch Pad
"Tapping" button:
if unchecked - all other options are diabled (grayed out)
if checked - 2 other buttons are enabled:
1. Drag Lock button
2. Tap Off When Typing button
Finally, there is a touch sensitivity dialogue.
I presume that the aforementioned buttons are hooks into the Windows XP
Synaptics driver. Can similar things be done in xorg? In some other
posts I have seen concerns about security with SHMConfig. I don't
understand the concerns, particularly if a check is made that an alps or
synaptics touchpad is present before enabling. This is after all on a
laptop where multiuser is kind of a misnomer - generally only one person
has the laptop at hand at a time, even if they are running several
programs. If it is still a major concern, I would recommend the
default be turning off tapping (I believe that most touchpads are
shipped with one or more separate buttons, so you can live with tapping
disabled) and then a detailed Howto for turning things on. Note that
the applicable man pages do not hint at what the option MaxTapTime with
a value of 0 might do, assuming a novice can even figure out how to find
the applicable man page.
--
Touchpad default settings are horrible
https://bugs.launchpad.net/bugs/113278
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