720 DP cant resume after lock screen

[delmanicomio]

Hi,

If the thread is at wrong place please move

it began really annoying, it started to happen every two days almost!

i lock my phone with lock button, sometimes trying to open with same button again but no lock!

i have to press lock and volume down for 20seconds everytime

using latest DP update, 8.10.14219.341

what causes happening like that ? is anyone there having same problem

thanks.