On Mon, Dec 28, 2020 at 09:39:04AM +0100, Didier Kryn wrote:
> Le 27/12/2020 à 21:55, Steve Litt a écrit :
> > On Sun, 27 Dec 2020 10:20:04 -0500
> > Hendrik Boom <hendrik@???> wrote:
> >
> >> My touchpad is absurdly sensitive, and I keep brushing against it by
> >> accident. I don't feel the touch at all, but the computer sure does.
> >> It can hapen while I'm typing and suddenly my text edit turns into a
> >> shell command in a newsly chosen window.
> >> I suspect even a few beard hairs can activate it.
> >>
> >> Now I usually use a wireless mouse on this computer though
> >> occasionally the mouse fails (usually low battery) an then I do want
> >> the touchpad.
> >>
> >> Is there any way to disable the touchpad normally, but to reactivate
> >> it easily when the mouse fails?
> > Yes!
> >
> > The attached touchtoggle.sh should fulfill your exact needs. Just
> > associate it with a convenient hotkey.
> >
> > For convenience I'm also putting it in the body, but use it from the
> > attachment: I have no idea what email clients do to the characters in
> > the file:
> >
> > ======================================================
> > #!/bin/sh
> >
> > # touchtoggle.sh Copyright (C) 2019 by Steve Litt
> > # All rights reserved.
> > # Licensed via the
> > # Expat license: https://directory.fsf.org/wiki/License:Expat
> >
> > # FIRST GET DEVICE'S DEVICE ID CONTAINING CASE INSENSITIVE "TOUCHPAD"
> > devid=`xinput | grep -i touchpad | \
> > sed -e"s/.*id=//" | sed -e"s/\s.*//"`
> >
> > # WITH THAT DEVICE ID, FIND EVERYTING ABOUT PROPERTY
> > # CONTAINING CASE INSENSITIVE "DEVICE ENABLED"
> > scratchline=`xinput --list-props 11 | \
> > grep -i "device enabled" | \
> > sed -e"s/^\s*//" | sed -e"s/\s*$//"`
> > proptext=`echo $scratchline | sed -e"s/\s*(.*//"`
> > propid=`echo $scratchline | sed -e"s/.*(//" | sed -e"s/).*//"`
> > currstate=`echo $scratchline | sed -e"s/.*):\s*//"`
> >

> > # DIAGNOSTICS, COMMENT OUT WHEN FULLY FUNCTIONAL
> > echo diagnostic devid      =$devid
> > echo diagnostic scratchline=$scratchline
> > echo diagnostic proptext   =$proptext#
> > echo diagnostic propid     =$propid

> >

> > # TOGGLE CURRSTATE VARIABLE
> > echo -n "Current state of $currstate "
> > if test "$currstate" = "1"; then
> >     currstate=0
> > else
> >     currstate=1
> > fi
> > echo has been changed to $currstate.

> >
> > # IMPLEMENT THE PROPERTY VALUE CHANGE
> > xinput set-prop $devid $propid $currstate
> >
> > # UNCOMMENT FOLLOWING LINE IF PROPERTY ID STOPS WORKING
> > #xinput set-prop $devid "$proptext" $currstate
> >
> > ======================================================
> >
> > I've had several versions of this shellscript, so please let me know
> > whether it works for you.
>
>     Note you might as well open your laptop and unplug the touchpad.
> Just search for a tutorial on how to change it.
>
> --         Didier

Yes, in principle. The times I need my touchpad are
* when my mouse battery runs out and I don't have a new one at hand
* when my mouse mysteriously fails
* when I'm travelling and I've forgotten my mouse
etc.
In few of these cases is it practical to take my computer apart and
reconnect the touchpad,
but it can be easy to run a shell command after hitting control-alt-F1
and logging in.

-- hendrik

>
>
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