Comment 0 for bug 1639629

Revision history for this message
Michael (3-ueuntu-4) wrote : can't change sensitiv on (new) Alps trckstick

On a Toshiba z20t using Ubuntu 16.04, I can't change the sensitivity via

echo 200 | sudo tee /sys/devices/platform/i8042/serio1/serio2/sensitivity
echo 150 | sudo tee /sys/devices/platform/i8042/serio1/serio2/speed
echo 1 | sudo tee /sys/devices/platform/i8042/serio1/serio2/press_to_select

as pointed out in https://wiki.ubuntuusers.de/Trackpoint/, because these virtual files are missing.

dmesg:
[ 4.517356] input: AlpsPS/2 ALPS DualPoint Stick as /devices/platform/i8042/serio1/input/input7
[ 4.544238] input: AlpsPS/2 ALPS DualPoint TouchPad as /devices/platform/i8042/serio1/input/input5
[ 2213.365432] input: AlpsPS/2 ALPS DualPoint Stick as /devices/platform/i8042/serio1/input/input22
[ 2213.394015] input: AlpsPS/2 ALPS DualPoint TouchPad as /devices/platform/i8042/serio1/input/input21
[ 2322.626764] input: AlpsPS/2 ALPS DualPoint Stick as /devices/platform/i8042/serio1/input/input25
[ 2322.655136] input: AlpsPS/2 ALPS DualPoint TouchPad as /devices/platform/i8042/serio1/input/input24

ls -lisa:
ls -lisa /sys//devices/platform/i8042/serio1/input/input25/*
27517 0 lrwxrwxrwx 1 root root 0 Nov 6 22:23 /sys//devices/platform/i8042/serio1/input/input25/device -> ../../../serio1
27527 0 -r--r--r-- 1 root root 4096 Nov 6 22:23 /sys//devices/platform/i8042/serio1/input/input25/modalias
27519 0 -r--r--r-- 1 root root 4096 Nov 6 16:26 /sys//devices/platform/i8042/serio1/input/input25/name
27525 0 -r--r--r-- 1 root root 4096 Nov 6 22:23 /sys//devices/platform/i8042/serio1/input/input25/phys
27534 0 -r--r--r-- 1 root root 4096 Nov 6 16:26 /sys//devices/platform/i8042/serio1/input/input25/properties
27515 0 lrwxrwxrwx 1 root root 0 Nov 6 16:26 /sys//devices/platform/i8042/serio1/input/input25/subsystem -> ../../../../../../class/input
27509 0 -rw-r--r-- 1 root root 4096 Nov 6 16:26 /sys//devices/platform/i8042/serio1/input/input25/uevent
27526 0 -r--r--r-- 1 root root 4096 Nov 6 22:23 /sys//devices/platform/i8042/serio1/input/input25/uniq

Tries the mainline kernel - no change.