Linuxcnc questions

Hi everybody
After install linux cnc 2.7.14, there are some question need help.
1/ when i shutting down my computer, display show black color with '' shutdown'', and need to press hard button one more time to complete the shutting down. I don't know what is problem, pls help to fix it.
2/ Mouse difficult to move after 10 minutes sleep, it looks like lag in my pc
3/ When i connect 1 more MPG on 2nd parallel card, the first time it works, but after shutting down my pc, it not works.
it looks like missing parallel address
after restepconf a gain, and readdress the parallel port, it works again.

I don't know what is problem know, i take 1 weeks to find it but no result,
Pls help to advise.

Kevin