Treal connection difficulties on linux

[hillaryan]

Thank you for building such a wonderful project. I recently ran into an issue moving my system from mac to linux and wanted to post a description in case it helped anyone else.

Issue: Treal is shown as disconnected even when plugged in
Solution:

1. lsusb should show:
   Bus 001 Device 010: ID 0dc6:0001 Precision Squared Technology Corp. PSK-7100 USB KBD
   This means your Treal is connected.

2. usbhid-dump -m 0dc6:0001 -es should not allow you to run due to insufficient permissions, but sudo usbhid-dump -m 0dc6:0001 -es should show output on key press. This indicates a permissions problem.

3. Create a file 10-treal.rules in /etc/udev/rules.d/ with the following lines:

SUBSYSTEM=="usb", ATTR{idVendor}=="0dc6", ATTR{idProduct}=="0001", TAG+="uaccess"
KERNEL=="hidraw*", ATTRS{idVendor}=="0dc6", ATTRS{idProduct}=="0001", TAG+="uaccess"

4. Run sudo udevadm control --reload-rules && sudo udevadm trigger to reload your rules table

5. usbhid-dump -m 0dc6:0001 -es should now run

6. Relaunch plover. Plover should now connect to your Treal.