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[Bug 991020] [NEW] Screen brightness not working on Toshiba NB550D netbook


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I have performed a clean install of Ubuntu 12.04. On the netbook the Fn
+ F6 and Fn + F7 key control the brightness. When pressed the on screen
popup is shown (showing the brightness level) and this changes in line
with key presses.

Though the screen brightness remains the same which is the highest
brightness level.

Also the brightness level does not change when using the System Settings
> Brightness & Lock screen.

The impact of this bug is that I will need to rollback to 11.10 as this
reduce the battery run-time to 50%.

** Affects: linux (Ubuntu)
     Importance: Low
         Status: Incomplete

** Tags: bot-comment
Screen brightness not working on Toshiba NB550D netbook
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