I have new problems with wireless and keyboard/mouse now.
1. The wireless doesn't work. The menu of network manager says "device not managed"
2. Mouse is hard to use. My English is poor and I don't know how to describe it. For example, I use virtual keyboard to input "|" into the terminal, I click "Shift", and then "|", then lots of "|"s are inputted. And when I click the down arrow button of a scrollbar, it can scrolls to the bottom. Just like autofile button on a joystick.
3. The fn on the hardware keyboard of my n810 doesn't work. I have copied boottime.kmap.gz into /etc.