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Recently I installed Ubuntu 12.04 on my Dell 1554 laptop.

I was adjusting my screen brightness when this happened :

http://picpaste.com/vlcsnap-2012-12-12-11h00m07s235-XPRzNM9G.png

this has become a recurring problem which is really annoying.

I also want to tell you that :

  1. I have installed the graphics drivers ATI/AMD FGLRX graphics driver.
  2. I have got my graphics driver checked by Dell.

Can anybody tell me a solution to this and moreover is anybody out there who is having the same problem?

Thanks in advance.

H/W and S/w details:

Dell Studio 1554 Processor : Intel® Core™ i5 CPU M 430 @ 2.27GHz × 4
Memory : 4 GB
VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Manhattan [Mobility Radeon HD 5400 Series]

OS : Ubuntu Release 12.04 (precise) 64-bit
Kernel: Linux 3.2.0-34-generic

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