Mount Nikon D5100 on Ubuntu 12.10

0. install gphoto2 

1. lsusb

Bus 001 Device 003: ID 046d:c31c Logitech, Inc. Keyboard K120 for Business
Bus 002 Device 007: ID 04b0:0429 Nikon Corp.
Bus 002 Device 003: ID 03f0:a407 Hewlett-Packard
Bus 002 Device 004: ID 03f0:0d17 Hewlett-Packard LaserJet 1012

2. gvfs-mount "gphoto2://[usb,002,007]", with quotes
    002 is the Bus number, 007 is the Device number

3. check /run/user/[username]/gvfs or ~/.gvfs

How to install Fcitx on Kubuntu

1. sudo apt-get install fcitx kde-config-fcitx fcitx-ui-classic fcitx-googlepinyin
2. im-switch -s fcitx -z default
3. fcitx -r
4. run qtconfig, in "Interface", choose "Default Input Method" to "fcitx"