Thinkpad Yoga - "black hole" digitizer problem poll

As I still don't see if the black hole problem first described here only appears in distinct countries, with distinct hardware set up, is a majority/minority problem... let's do a poll.

 

better poll would the production date of these machines.

 

don't think so, as

a) most readers here will not know production date nor easy way to find it out and type it here

b) I and probably other possible buyers rather want to know if this malfunction is restricted to some countries/regions, minority/majority of delivered Yogas and then buy with although there is some risk

c) even Lenovo now just starts to investigate this problem when you read the thread on the lenovo board. So how would production time help me as a buyer currently (it will help lenovo)

 

1) Production date is printed on the serial number stick. if you can read serial number and model number then you would able to read the production date.

2) Certain countries got machines delivered earlier than others.

3) Lenovo is aware of the problem.

 

Is there a description how to reproduce the problem?

 

Draw straight lines on the screen (ie with a ruler) and see what turns up: