mtdev crash sometimes

On a current installation in a museum, i got few times (like 11 times during the past 8 months) this crash:

 Exception in thread Thread-1:
 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 "/home/inook/code/kivy/kivy/input/providers/mtdev.py", line 303, in _thread_run
     process([l_points[x] for x in _changes])
   File "/home/inook/code/kivy/kivy/input/providers/mtdev.py", line 177, in process
     touch = MTDMotionEvent(device, tid, args)
   File "/home/inook/code/kivy/kivy/input/motionevent.py", line 286, in __init__
     self.depack(args)
   File "/home/inook/code/kivy/kivy/input/providers/mtdev.py", line 50, in depack
     self.sx = args['x']
 KeyError: 'x'

It may be a hardware issue, however, we could fix it by ignoring a frame that doesn’t meet the minimal keys we actually need.

[lozuwa]

greetings, i am currently facing the same issue. I tried your fixes but no result. I thought it was a problem with the mtdev provider but reading your comments discards that option.

[schoolsplay]

Im now using the fix pietervandemeer suggested and put the str in a try/except clause to prevent a crash. It’s being deployed on 100+ machines so I will get a good view of the result of this fix