Tray icons missing after upgrade from 12.04 to 14.04

Our Ubuntu workstation is required some applications installed for complying security policy. Those applications will show some icons on Systray. After upgrade from 12.04 to 14.04, those icons are missing.

The reason is “Unity Notification Area (Systray) Whitelist Is Obsolete [Ubuntu 13.04 Raring Ringtail Changes]“. After a little bit searching, here is the solution:

sudo apt-get install indicator-systemtray-unity

Then log out and log in again.

Reference: How to re-enable the systray (indicator panel) after latest updates

disable USB automount in Ubuntu

Since there is a bug in Ubuntu which let iPhone with iOS7 can not be mounted, I decided to disable it. Here is the steps:

  1. Install dconf-tools.
  2. Launch dconf Editor and navigate to org -> gnome -> desktop -> media-handling
  3. Uncheck “automount” and “automount-open”

Got a T420

Since the T410 is used for nearly four years and there is a chance to get a newer machine, I got a second hand T420 yesterday. It is pretty much like T410. So I decided to switch the HD, the Ubuntu 12.04 is working fine with it.

The only thing I need to do is change the device MAC address to fit the current machine.