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I installed Xubuntu recently. The login screen looks normal. Every time after I write my password in the log in box and press 'log in', the wallpaper disappears for about 5 seconds and I see this:

Screenshot showing corruption of display

This image fills the screen, ant then the taskbar appears at the top of it. And after that the wallpaper I had set appears normally.

I wanted to ask if seeing this strange mixture of dots as wallpaper after log in is normal, and if it isn't, I'd like to know if I can do something to avoid it and instead see immediately my wallpaper after log in. Thanks

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I will tell you now, it's definitely not normal. Do you put your system into hibernation? –  FuzzyToothpaste Jun 20 '14 at 1:23
It happens when I turn on the PC after it was turned off. If I suspend the PC and then I log in, this doesn't happen. I don't use hibernation. –  user3599526 Jun 20 '14 at 18:57

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