External touchpad for Ubuntu?

[P. Echols]

On Tue, Dec 22, 2020 at 7:17 PM Bob <ubuntu-qygzanxc at listemail.net> wrote:
>
> ** Reply to message from "P. Echols" <p.echo926 at gmail.com> on Tue, 22 Dec
2020
> 18:16:01 -0800
>
> > On Sun, Dec 20, 2020, 8:04 AM Volker Wysk <post at volker-wysk.de> wrote:
> >
> > > Hi!
> > >
> > > <snip>
> > >
> > > if [ "$DISPLAY" == ":0" ]; then
> > >     xinput --disable "AlpsPS/2 ALPS GlidePoint"
> > > fi
> > >
> > >
> > I have been doing something similar on my laptop. A script that toggles
> > containing the command:
> >
> > xinput --disable 13
> >
> > Where 13 is the xid of the TouchPad.  Now that i have upgraded to 20.04,
> > this no longer works.  In fact the command typed in a terminal doesn't
> > work. Neither does it work formulated as Volcker suggests, using the
exact
> > device name as shown by:
> >
> > $xinput --list-props 13
> >
> > Any thoughts?
> >
> > > <https://lists.ubuntu.com/mailman/listinfo/ubuntu-users>
>
> I am running Ubuntu 20.10 and the touchpad has ID of 15,  Run "xinput
list" to
> see what ID the touchpad has, it may have changed.  Another thing that I
have
> noticed is that in the 'xinput list' is that the touchpad is not listed
as such
> it is shown using the model number of the device.
>
> --
>

Yes, 13.  My script originally had 12, but changed.  Output of $xinput list:

Virtual core pointer                        id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                  id=4    [slave  pointer
 (2)]
⎜   ↳ DELL073B:00 06CB:7E7D Mouse                 id=12    [slave  pointer
 (2)]
⎜   ↳ DELL073B:00 06CB:7E7D Touchpad              id=13    [slave  pointer
 (2)]
⎜   ↳ Raydium Corporation Raydium Touch System    id=11    [slave  pointer
 (2)]

One thing that is interesting is that $ xinput --disable 11 works to kill
the touch screen, but 13 does not work for the pad.  Also, the following
output of xinput --list-props

patton at Spock:~/scripts$ xinput --list-props 13 | grep -n -1 "Enabled"
1-Device 'DELL073B:00 06CB:7E7D Touchpad':
2: Device Enabled (168): 1
3- Coordinate Transformation Matrix (170): 1.000000, 0.000000, 0.000000,
0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
patton at Spock:~/scripts$ xinput --list-props 13 | grep -n -1 "Enabled"
1-Device 'DELL073B:00 06CB:7E7D Touchpad':
2: Device Enabled (168): 0
3- Coordinate Transformation Matrix (170): 1.000000, 0.000000, 0.000000,
0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000

The first one is with pad working, the second after manually turning off
using the settings in the GUI.  Note that "enabled" goes from 1 to 0, so 13
is the correct.
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