Public bug reported:
I own a HP notebook model nx7400 EY505ES with BIOS F.08 and neither ubuntu edgy
nor feisty recognizes the brightness control of the built in LCD. The
brightness of the LCD can be easily changed via writing to the file:
/proc/acpi/video/C080/C13F/brightness. The file contains:
levels: 100 51 30 37 44 51 58 65 72 79 86 93 100
current: 51
The brightness can be changed via issuing
sudo bash
echo 51 > brightness
The numbers echoed into the file have to come from the list, and the number 100
is impossible to enter this way. Is there a way to make the ubuntu aware of
these possibility?
** Affects: hal (Ubuntu)
Importance: Undecided
Status: Unconfirmed
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Brightness control via ACPI in HP notebooks
https://launchpad.net/bugs/82188
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