my top bar is not visible in ubuntu 11.04 .I upgraded it yesterday from 10.10 to 11.04 through internet but after restarting the top bar panels all vanished. How to activate my top bar?????
closed as too localized by jrg♦, Takkat, fossfreedom♦, Marco Ceppi♦ Feb 10 '12 at 0:58
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See if everything is installed:
The way I understand your question is that you call things like the three menus Applications, Places and System, for panels. These are really called applets. The "bar" you speak of, is called a panel. Then, if I interpret correctly, you do have a dark panel ("bar") at the top of the screen, but it does not contain the applets you're used to.
In the new Ubuntu interface, called Unity, there are no Applications, Places and System menus. The applets are also gone. Instead. You'll find the new launcher at the left of the screen and a button in the top left to display the dash -- a menu for files, applications, and everything else. You can also right-click the Files and Folders entry on the launcher to get a list of bookmarks (similar to places) and right-click Applications to display a category menu of the applications. The settings that were previously found in System, are now found in the power-button at the top-right of your screen.
In 11.04, you can switch back to the old user interface when you log in. Select your user name and then choose a session called Ubuntu Classic. In the new interface, it is not possible to use the old panel that you had on top. You can place it at the bottom if you like, though. But Gnome 2 is deprecated, so in 11.10 that won't be possible either. Everyone is moving to Gnome 3. If you give it a little time, I think you'll find that to be a very big improvement. Unity can do many things Gnome Panel never could.
If, after giving it a real chance, you come to the conclusion that you do want panels similar to the ones you've been using, but want to be more future proof, then I would recommend having a look at Xubuntu, which is based on Xfce. Their panels are very similar and can use Gnome Panel applets, but it is being actively developed and the panels really work much better.