English is my second language so it's not so good, sorry
My laptop runs cpu i5-6300hq and gtx 960M video card. I recently have installed ubuntu in nomodeset because kernel verson 4.2 didn’t support skylate processor (intel hd 530). Therefore, I had to update to kernel 4.4.3 in order to use intel hd 530 for my second monitor. Everything seemed normal, but there is one problem which is after using my latop for a while, ubuntu stops responding, my mouse and keyboard stop working as well so I have to use the power button to restart the laptop; however, the sound works normally (like music). I have tried reinstalling for many times but it was strange one time that I after I had installed in nomodeset and booted to Ubuntu (kernel version 4.2), Ubuntu automatically detected cpu và intel hd 530, and it happened only once. I don’t understand what is happening with kernel of Ubuntu. I am newbie, please help me to fix it.