My first impression with freya beta 2 was not so good. I found no way to make dropbox display its systray icon and so does ibus. But this time, with a lot of people trying out freya, I was able to google some work around.
First of all, dropbox should be start with this command:
env XDG_CURRENT_DESKTOP=Unity dropbox
So change the content of the file ~/.config/autostart/dropbox.desktop and replace the command was suffice.
For ibus, things is more tricky. I use ibus-unikey engine and the only way I found there is to display systray icon and switch input method by shortcut is done through gsettings and switchboard (system settings). ibus-setup has no power in those area whatsoever.
The shortcut key to switch keyboard layout is defaulted to be Alt + Space. If you don’t like it, go change it now in System settings > Keyboard > Shortcuts > Universal Access > “Next keyboard layout”. Go change it now because you will have to go throug hassle if you want to change it later.
To register ibus input method you have to the value of key:
using using gsettings or dconf-tools is your choice (the only choice you have).
This is my settings in dconf-editor. After this step, you can see a small icon idicator for your keyboard layout like this.
But you won’t be able to go to Text entry settings or the keyboard witch in System settings. switchboard will get segfault if you try to do so. The only to gain access back in keyboard settings is temprorarily restore the input-sources.sources key to default.