-
Touchpad Control
There are two drawbacks to using a laptop: the touchpad and the touchpad.
First, you are typing something and the touchpad decides you've tapped in the secret code for "destroy, destroy, frustration is irrelevant" and whatever it was you were doing is gone.
Second, this still happens even though you've plugged in an external mouse and aren't using the touchpad at all.
The route to solving the first problem is through syndaemon and the route to solving the second is through synclient. Both are command line apps already installed in Knoppix (6.4.4. at least).
To get the right settings automatically when Knoppix start-ups you need an additional script in /etc/X11/Xsession.d and to get the settings to change automagically when you plug-in or unplug a USB mouse, you need to add an extra pair of rules to /etc/udev/rules.d.
There are examples of how to do this out there but they usually start with someone complaining what used to work has stopped and could they crib a new solution from someone who has already done all the hard work.
Seems Knoppix is no exception and none of the solutions out there work. Seems xhost + is missing somewhere for sentimental reasons or perhaps Knoppix is just using a very new X server with new and improved security (the kind that got Windows Vista such a bad name).
Here's my take on this:
Code:
# /etc/udev/rules.d/75-touchpad.rules
# Disable touchpad when USB mouse is plugged in and reenable when USB mouse is removed
ACTION=="add", SUBSYSTEM=="input", ENV{ID_INPUT_MOUSE}=="1", RUN+="/etc/X11/Xsession.d/50touchpad 1"
ACTION=="remove", SUBSYSTEM=="input", ENV{ID_INPUT_MOUSE}=="1", RUN+="/etc/X11/Xsession.d/50touchpad 0"
# EOF
and
Code:
#!/bin/sh
# /etc/X11/Xsession.d/50touchpad
if pidof X >/dev/null; then
# Turn touchpad off when a USB mouse is present
pidfile=/var/run/syndaemon.pid;
if [ -n "${XAUTHORITY}" ]; then
# Xsession initialisation
if lsusb -v 2>/dev/null | grep -qF Mouse; then
synclient TouchpadOff=1;
else
syndaemon -d -t -k -p $pidfile;
fi
else
# udev hotplug event
DISPLAY=":0";
USER=$(who | awk "/ $DISPLAY /"'{print $1}');
XAUTHORITY=/home/$USER/.Xauthority;
export DISPLAY XAUTHORITY;
synclient TouchpadOff=$1;
if [ "$1" -eq 1 ]; then
[ -f $pidfile ] && kill $(cat $pidfile);
[ -f $pidfile ] && sync;
else
[ ! -f $pidfile ] && syndaemon -d -t -k -p $pidfile;
[ ! -f $pidfile ] && sync;
fi
fi
fi
# EOF
The second must be executable as it is called by the rules in the first.
Enjoy.
Last edited by Forester; 03-17-2011 at 11:30 PM.
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
Macintosh Platinum Mouse - Apple 128K 512K 512Ke Mac Plus Lisa IIe M0100 - NEW
$44.99
Apple IIe A2S2064 Vintage Personal Computer 128K Enhanced
$200.00
1984 APPLE MACINTOSH 128K 40th Anniversary MATCHING # BOX Set 1st Mac M0001 NICE
$7499.99
Apple Macintosh 128k 512k Plus Analog Board Capacitor Re-Cap Kit - US Shipping
$23.95
Vintage Apple Macintosh Classic 128K Game Pack 3 On New 400K Double Density Disk
$39.99
Vintage Apple lle 128k Enhanced Computer A2S2064 Rebuilt W/ Disk Drive & more
$349.00
1984 APPLE MACINTOSH Model M0001 1st MAC 128K 40th Anniversary PICASSO KIT NICE
$4749.99
Apple Macintosh M0001 128K computer & M0110 keyboard/mouse, for parts/repair
$300.00
VINTAGE APPLE MACINTOSH M0110 KEYBOARD 128K 512K PLUS WITH ORIGINAL CABLE
$199.99
Apple Macintosh 128K M0001 Computer with 128K Label - Estate Sale SOLD AS IS
$2468.10