Special Forums Hardware How to *completely* disable laptop touchpad, without disabling trackpoint? Post 303041248 by DevuanFan on Tuesday 19th of November 2019 11:24:07 AM
Neo, here you go:
# echo serio1 >/sys/bus/serio/drivers/psmouse/unbind
# echo serio2 >/sys/bus/serio/drivers/psmouse/bind
bash: echo: write error: No such device

By the way, I found a hardware solution. If I disconnect the touchpad's ribbon (it's just below the palmrest, trivial to get to and disconnect), it only disables the touchpad (and its two buttons); the trackpoint (and its three buttons just below the space bar) remain fully functional. Here is the relevant part of the output when the touchpad's ribbon is disconnected (notice that there's no "serio2" anywhere):

$ cat /proc/bus/input/devices
I: Bus=0011 Vendor=0002 Product=000a Version=0000
N: Name="TPPS/2 IBM TrackPoint"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input6
U: Uniq=
H: Handlers=mouse0 event5 
B: PROP=21
B: EV=7
B: KEY=70000 0 0 0 0
B: REL=3

So it seems that on a hardware level the touchpad and trackpoint are indepedent; it is only on the software level that the trackpoint is always a child of the touchpad.

I'm still interested in finding a software solution.
This User Gave Thanks to DevuanFan For This Post:
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GSYNAPTICS(1)							   User Manuals 						     GSYNAPTICS(1)

gsynaptics - the Synaptics touchpad configuration utility for Gnome SYNOPSIS
gsynaptics [options] DESCRIPTION
gsynaptics is a GUI for configuring the Synaptics touchpad in Gnome. It is able to change touchpad parameters without using the X configu- ration files and without needing to restart X. gsynaptics-init(1) is used to load the touchpad parameters stored on file by gsynaptics. See the source README or the gsynaptics website http://gsynaptics.sourceforge.jp/ for more information. OPTIONS
There aren't any options. FILES
~/.gconf/desktop/gnome/peripherals/touchpad/%gconf.xml Stored parameters for gsynaptics REPORTING BUGS
Report bugs to: Hiroyuki Ikezoe <poincare@ikezoe.net>, Takuro Ashie <ashie@homa.ne.jp> AUTHOR
This manual was written by Mario Izquierdo Rodriguez <mariodebian@gmail.com> COPYRIGHT
This manual page is free software; see the source for copying conditions. This manual page is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER- CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. gsynaptics 0.9.13 Dec 2007 GSYNAPTICS(1)

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