Input Device permission error: Beaglebone Black + JavaFx

Question

I am trying to launch a JavaFX app on my beaglebone black running Debian.

When launching as the root user, the application will launch but the touchscreen will bug out a little bit, displaying improperly and messing up the touchscreen touch calibrations.

When I try and launch the app as a normal user, I get the following error messages as the app launches:

Udev: Failed to write to /sys/class/input/mice/uevent
      Check that you have permission to access input devices
Udev: Failed to write to /sys/class/input/event0/uevent
      Check that you have permission to access input devices
Udev: Failed to write to /sys/class/input/event1/uevent
      Check that you have permission to access input devices
Udev: Failed to write to /sys/class/input/event2/uevent
      Check that you have permission to access input devices
Udev: Failed to write to /sys/class/input/input0/uevent
      Check that you have permission to access input devices
Udev: Failed to write to /sys/class/input/input1/uevent
      Check that you have permission to access input devices
Udev: Failed to write to /sys/class/input/input2/uevent
      Check that you have permission to access input devices
Udev: Failed to write to /sys/class/input/mouse0/uevent
      Check that you have permission to access input devices

The app is then unresponsive to touch input.

How can I give a normal user permission to access the input devices?

Did you manage to find a fix for this? – Gillardo Sep 30 '15 at 13:49 — Gillardo, Sep 30 '15 at 13:49

score 1 · Answer 1 · answered Oct 06 '16 at 07:44

1

I just find this post.

I have another solution (maybe more clean).

Modifying udev rules, you can add rights on this files.

sudo vi /etc/udev/rules.d/99-com.rules

and add following lines:

SUBSYSTEM=="input*", PROGRAM="/bin/sh -c '\
        chown -R root:input /sys/class/input/*/ && chmod -R 770 /sys/class/input/*/;\
'"

answered Oct 06 '16 at 07:44

Fred

11
1

Is there a good reason to change *all* input devices, rather than just setting `MODE` and `USER` values in the udev rules? BTW, you probably want `ACTION=="add"` in there, too... – Toby Speight Oct 06 '16 at 13:14
I would like to solve the problem by adding a more specific udev-rule. How would it have to look if I wanted to use the add-action and only allow the necessary devices? – Customizer Dec 27 '17 at 20:10

score 0 · Answer 2 · edited Mar 22 '16 at 16:00

0

If your problem is related to the mouse issue described here you have currently three options:

start your app as root
unplug/plug your mouse (or mouse receiver) after each app start
use older jdk 1.8 (<= u60)

edited Mar 22 '16 at 16:00

infiniteRefactor

770
5
14

answered Mar 14 '16 at 21:42

tomasb

101
2

Input Device permission error: Beaglebone Black + JavaFx

2 Answers2