I have a problem with my Lumia 920. After installing Windows 10 technical preview (any version) via Windows Insider (slow or fast), and after I lock my phone using the lock button, I am unable to wake it up or unlock it using the double-tap option or the unlock button. The phone is not shut down, because I tried calling myself from another phone and it was ringing, but nothing is shown on the screen, it is simply dark. Only, when I do a soft reset I can start using my phone, but the next time I lock it, it happens again.
I don't have any lock screen application installed.
Is anyone able to help me with this?
Thank you in advance.