I was pretty busy lately, and didn't had time to find the cause. But in the following week I'm going to spend some good time finding the exact trigger to this problem. I will report this as soon as I find out the cause.
One thing to note is that my Unity settings are different from default. Using CCSM I have changed some Unity settings as follows : 1- "Hide Launcher" is set to "Never". 2- "Backlight Mode" is set to "Backlight and Edge Illumination Toggles". 3- I have also enabled "Wobbly Windows". Also, using "gnome-tweak-tool" I have turned OFF "File Manager Handle Desktop" (Files in the Desktop folder are not shown on my desktop). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/905793 Title: Tray Icons Suddenly Stop Working in Unity To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/905793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs