hidinput exception in Kivy. No such devices

I’m using a Kivy Python framework in my project and USB touch panel for user interraction and I faced with problem. When my touch panel has lost connection (for a second) and then reconnect again the application get an exception HidinputException in hidinput.py file.

Here I show my stacktrace:

Exception in thread Thread-7:
 Traceback (most recent call last):
   File "/usr/lib/python2.7/threading.py", line 810, in __bootstrap_inner
     self.run()
   File "/usr/lib/python2.7/threading.py", line 763, in run
     self.__target(*self.__args, **self.__kwargs)
   File "/usr/local/lib/python2.7/dist-packages/kivy/input/providers/hidinput.py", line 687, in _thread_run
     data = fd.read(struct_input_event_sz)
 IOError: [Errno 19] No such devices

[dlernstrom]

I also face this problem when running a Raspberry Pi with a Kivy application as a display. Occasionally, I’d like to plug in a USB mouse/keyboard in order to tweak the application. Under these cases, I am forced to restart the entire Kivy Application, just so that I can use keyboard/mouse.

Strange thing is that Kivy itself is obviously reconnecting to the keyboard (despite the IOError crash above). I know that because I’m still able to CTRL-C my way out of the Kivy Application.

[openedhardware]

Hi, I have same problem with my touch screen. I am using 10.1" touch screen from WaveShare. http://www.waveshare.com/wiki/10.1inch_HDMI_LCD_(B)_(with_case)

Though I am using external power source for the touch screen, same errors are occasionally occurs and it is suffering me continuously. After error is occurred, screen is locked up and does not accept any touch input.

Is there any way to recover the connection in the hidinput.py? Do I need to modify it?

Thanks.