Sorry to hear about this issue you are getting, since it is a tablet I would recommend you to install the driver provide by Lenovo*, in regards to this issue I suggest you to continue following up this thread:
Please read my post carefully and I posted on thread that you provided link as well. I researched thoroughly this problem and troubleshooted all options.
I tried to follow all details on that thread and it if absolute no use, plus that a bit older driver is not available for download anymore from Lenovo.
Can you file bug to Intel Graphics team? (as they never had driver for Broadwell that could work sleep/resume and I am hearing same situation with Sandy bridge, etc,.. How could Intel Graphics engineers and organization be so lousy?)
Can someone really help with some constructive suggestion that can be followed and reproduced as fix?