Public bug reported:

In first place sorry for my english, it's not very good.
I'm using the version 8.04 from the Ubuntu for PC, installed with the Live CD.
When I have a opened session and give order to hibernate such order is done. 
While the computer is hibernating the screen is shown in black, so I suposse 
what I should wait in every hibernation process (and maybe be a good idea that 
appears a message who tells something like "hibernating", such in other OS).
Nevertheless, if I order to hibernate from the Ubuntu's menu(where you can log 
in) then appears something ilogical. It seems to be always two images that are 
swapping constantly. I've done several times and in all this times always was 
the same two images. In the functional side, there's no problem, but... it's a 
not very nice looking, or pretty printing. It makes you think that there's 
something that is not working well, what it's false.
If somebody wants to see by himself only have to do this steps:

1.- Turn on Ubuntu.
2.- On the menu, select options --> hibernate.

P.D.: I'd like to suggest a posible explanation to the problem: Ubuntu
maybe use the procedure of the swapping buffers to print on screen(like
use also OpenGL). Before hibernating the system don't draw in black the
screen, like when from a session something gives order to hibernate. The
images that are shown are the finally state of the buffers. If it was
true, only the system have to fill with 0s both buffers and the problem
will solved.

** Affects: ubuntu
     Importance: Undecided
         Status: New

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on hibernating ilogical images appears on the screen
https://bugs.launchpad.net/bugs/245217
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